Hermetic Absorption Liquid Chillers - خانه · PDF file15 standard models for high-capacity...

15 standard models for high-capacitycooling at low operating costs

Hermetic AbsorptionLiquid Chillers

16 JB70 thru 815 tons

FORM SSI - 16JB (89)

Look to Sarmaafarin for the standard ofexcellence in absorptionrefrigeration... the 16 JB

Now, more than ever, absorption comparable absorption machine, for refrigeration is a viable alternative to less energy usage and dramatically costlier methods of central station low operating costs; the automatic refrigeration. Absorption offers motorless purge system, for operating cost savings that are too complete and continuos removal of crucial to overlook in light of today's non-condensables to an external energy shortages and spiraling storage chamber; U-bend generator construction costs. In circumstances tubes that float and adjust freely in where your building has unused response to rapid thermal changes, boiler capacity during the summer for a great reduction in tube bundle months, or where district steam is failures; and a rigorous standard of readi ly avai lable, absorpt ion leak tightness that no other machine machines are a wise, costconscious in the industry can approach, mass

-5choice. In areas where there is low spectrometer tested to 2 10 cc std cost natural gas, or where electrical air/second.rates have risen dramatically, With the 16JB, excellence is absorption is an economical way to the standard. Consider-3-stage air condition a wide variety of Cycle-Guard control, standard, buildings. And in a cases such as automatical ly prevents over-hospitals or industrial processes, concentration and crystallization; where air conditioning is an absolute Extender valve control, standard, must, and a 100% standby generator prevents overdilution and ensures a system is required, first costs can be safe pump suction level. When you significantly trimmed by specifying a specify these chillers, you get central station absorption machine economical, dependable operation with its comparatively low power with entering condenser water as low consumption. as 45 F; trouble-free leakproof

Absorption is a relatively quiet, hermetic pumps; and double sump vibration-free means of producing design for easier servicing.effective refrigeration. So when you These dependable machines consider what 's avai lable in are the result of over a quarter-absorption machines, consider the century of in-the-field servicing and best-the incomparable 16JB. Fifteen factory research and development, standard models use either low dating back to 1945 when introduced pressure steam or hot water to the first high-capacity absorption produce refrigeration economically in equipment.the 70 to 815 ton range. These rugged chillers are

Absorption machines set the factory assembled, wired, and standard for excellence in absorption shipped under vacuum to the jobsite. refrigeration, with these exclusive Smaller sizes are shipped in a single features standard-the lowest package while larger models are condenser water flow rate in the shipped in two sections for easier industry, 3.0 gpm/ton, for greater rigging to either basement or rooftop installation and operating economy; locations.the lowest full-load steam rate of any

15 standard models ... matched to your exact job requirements

Enjoy energy savings at full and part loadAccurately plan operating costs3-stage Cycle-Guard and Extender controls... reliability even at 45 F entering condenser water.

Easy servicing convenieanceDouble-sump design

Designed with lower maintenance costs-in mindU-bend generator tubesLeakproof hermetic pumpsLithium chromate inhibitorAutomatic motorless purge

1

16JB - an allaround performer

Absorption machines operate on the simple principle that under low absolute pressure, water will boil at a low temperature. The two-shell 16JB uses heat to efficiently produce refrigeration. The lower shell divided into absorber and evaporator sections, while the upper shell consists of generator and condenser sections. The evaporator section contains the refrigerant, water. A coil, thru which the building cooling system water circulates, is inserted into the evaporator to establish a heat exchange.

The refrigerant gains heat from the cooling system water, and because of low pressure maintained in the evaporator. quickly reaches sa tura t ion tempera ture and vaporizes, cooling the system water. The remainder of the cycle deals with reclaiming this refrigerant.

The affinity of lithium bormide for water causes the refrigerant vapor to be absorbed by the strong solution in the absorber section. The diluted (weak) solution is pumped into the generator, where steam or hot water is used to drive the water out of the solution as a vapor. The vapor passes into the condenser and changes back to liqid, which returns to the evaporator to be reused. Meanwhile, the strong solution left in the generator flows back to the absorber. This cycle is continuous as long as the machine is in operation.

The inside storyon absorption excellence...

The absorptionrefrigeration cycle

CONDENSINGWATER OUT

STEAM

CAPACITYCONTROLVALVE

OUT

CHILLEDWATER

IN

IN

CYCLEGUARDVALVE

HERMETICREFRIGERANTPUMP

EXTENDERVALVE

HERMETICSOLUTIONPUMP

HEATEXCHANGER

CONDENSING WATERCONDENSER

GENERATOR

ABSORBER

EVAPORATOR

TM

TM

1 - Condenser Tubes2 - Generator Tubes3 - Evaporator Tubes4 - Absorber Tubes5 - Refrig Spray Header

6 - Solution Spray Header7 - Refrig Pump8 - Solution Pump9 - 3-Stage Cycle-Guard Control10 - Extender Control

11 - Heat Exchanger12 - Eliminators13 - Evaporator Insulation

1 2 13 12

5

3

6

7 10 9 8 11

HIDDEN4

2

Low operating costs

The 16JB has the lowest full-load steam rate in the industry, ensuring lower operating costs than any other comparable absorption machine!

Part Load energy savings

Energy savings can be significant if the machine is able to operate at l o w e r c o n d e n s e r w a t e r temperatures. In actual operation, design conditions of load and wet-bulb temperature do not frequently occur. Therefore, during much of the operating season, this conservation of energy is possible. 16JB chillers o p e r a t e t r o u b l e f r e e w i t h uncontrolled as low as 45 F. Thus, further savings are realized with 16JB machines thru elimination of a cooling tower bypass system, including an expensive bypass valve, piping, installation and subsequent maintenance.

Enjoy energy savingsat full and part load conditions ...

3 - s t a g e C y c l e - G u a r d a n d ability to use cooler condenser water extender valves: means reduced energy demand and reliable control, even at 45 F there fore grea ter opera t ing entering condenser water! economies.

Extender valve contro l The capacity control valve in the ensures a safe pump suction level by principal means of control of the preventing overdilution. A control 16JB. Additionals control devices device automatically senses the safe maintain safe, stable operation. minimum refrigerant level in the

The revolutionary Cycle- evaporator and adds solution as Guard control prevents over- needed to maintain proper system concentration and crystallization balance. The Extender valve is also problems by automatically adding essential for reliable operation down refrigerant (water) to the absorber if to 45 F entering condenser water, the refrigerant level in the evaporator since it protects the evaporator rises to a pre-set limit. Actually, pump ... the absorber works so Cycle-guard is calibrated in the field effectively that it must be prevented by factory personnel to sense three from absorbing all the refrigerant, different levels of temperature and leaving the evaporator dry. So a concentration. control device senses the safe

This extraordinary control minimum evaporator level and the maintains leaving chilled water Extending balanced operation to the temperature and allows continuos 45 F entering condenser water operation at full load with entering range.condenser water as low as 45 F. The

Continuos and stablePart - load operation

Absorption machines provide continuous and stable part-load operation with lower entering condenser water temperatures, assuring significant operating and energy savings.

- easier servicing,too!

Double sumps cutpump service time

A U-baffle in the lower shell forms two sumps in the shell, allowing storage of refrigerant or solution in one sump while the other side is being serviced. The U-baffles in both the upper and lower shells serve as a natural insulating barrier between sections. Fluids being stored need not be drained or transferred to drums, a factor that greatly reduces services time and expense.

3

Your 16JB has features that substantiallylower maintenance costs

U-bend generator tubes reducecostly tube bundle replacement

Hermetic pump/motor units offer freedom from maintenance, and the ultimate in simplicity and pumping re l i ab i l i t y. Hermet i c des ign eliminates the need for a separate, complicated, and possibly leakprone seal water system and auxiliary city water piping, while providing leaktightness and longer machine life. These pumps have conically

shaped bear ings which are lubricated by the fluid being pumped. The solution and refrigerant pumps are hermetically sealed; require no packing glands, machined thrust bearings, magnetic strainers, or monthly servicing. They are fully field

serviceable, and inspection is recommended at six-year intervals.

Another special feature of 16JB absorption liquid chillers is the use of U-bend generator tubes for maintenance-free operation, greatly reducing the likehood of expensive and time-consuming tube bundle replacement.

Each cupro-nickel tube is expanded in the tube sheet and tube support sheets to eliminate tube wear. The U-bend configuration allows the entire tube bundle to expand or contract as a unit when subjected to rapid temperature changes. The tube bundle floats and adjust freely as a unit, decreasing tube wear due to thermal stresses and reducing tube bundle failures.

Lithium chromate inhibitor:added corresion protectionyou can check in the field

Lithium chromate inhibitor added to the lithium bromide solution in 16JB absorption chillers provides in 16JB absorption chillers provides an extra margin of protection against corrosive damage to internal machine surfaces. It assures easier maintenance at lower costs, and dependable operation.

Lithium chromate is not only an effective corrosion inhibitor, but is also practical to measure and maintain, using the Solution Analysis Test Kit. This portable kit contains the components needed for quick and practical evaluation of inhibitor concen t ra t i on and so lu t i on chemistry - right in the field. The easy-to-use colorimeter shows immediate results ... no more delays or waiting for laboratory analysis ... now solution chemistry can be evaluated at the jobsite, and on-thespot adjustments made, if needed.

Thermal expansion of ordinary tubes resultsin rubbing, wear .

With U-bend tubes, there’s room to expand,no contact or rubbing.

Leakproof hermetic pumpscut maintenance expense

4

The 16JB's motorless purge How the motorless purge operates closing solution return valve E to automatically keeps the unit free of During machine operation, lithium the absorber and valve L to the noncondensables. Purging enables bromide solution from the discharge condenser. Solution is forced into the your 16JB to provide full refrigeration of the solution pump flows thru two jet storage chamber, compressing the capacity when needed, helps exhausters. The absorber jet noncondensables to a pressure prevent corrosive damage to internal exhauster A-1 discharges directly higher than atmospheric. Exhaust surfaces, and offers virtually into the secondary heat exchanger valve H is opened to bleed the maintenance-free operation when B after drawing noncondensables noncondensables, then immediately compared to competitive motor- are drawn into the condenser purge closed. To return the purge to driven vacuum pumps. And you don't line by the second jet exhauster A- automatic operation, Valve E is risk costly contamination of solution 2, and discharged into separation opened and the solution flows back with oil vapors, either. device C. In this separation device, t o t he abso rbe r. The non -

Properly inhibited, leaktight noncondensables flow to storage condensables are trapped in the absorption machines generate chamber D, and the solution passes storage chamber and cannot reenter hydrogen in very small quantities. back to the absorber. As the storage the machine during shutdown.This hydrogen is present in sufficient chamber fills with noncondensables, volume to interfere with proper the solution level is depressed until a machine operation, and it must be predetermined level is reached. The con t i nuous l y removed . And displaced solution flows back to the motorless purge does just that ... absorber. At this point, an indicator removing these noncondensables light on the control panel signals the continuously, automatically, safety, need to exhaust the purge. and effectively. Evacuation is a simple matter of

Automatic motorless purgeextends machine life

5

COOLINGTOWER

STEAMSUPPLY

SHUTOFFVALVE

STRAINER

DRIPTRAP

DRIPLEG

STEAM VALVE(CAPACITY CONTROL)

CHILLED WATERSENSOR

TO CHILLEDWATERLOAD

THERMOMETERWELLS

CHILLED WATERPUMP

CONDENSING WATERPUMP

STRAINER

BLOW-OFFTEST VALVE

CONDENSATE PIPINGSTEAM TRAP

TO STEAM VALVE

TO STEAM VALVE

FROM SENSOR

DRAINS

DRAINS

LIFELUG

VENTS

VENTS

CONDENSING WATERPUMP HOLDING COILCHILLED WATER PUMPHOLDING COILCONDENSING WATERFLOW SWITCHCHILLED WATERFLOW SWITCH

FROM POWER SUPPLY

TO

FOR ELECTRONICCONTROLS ONLY

FIELD PIPING

CONTROL WIRING

POWER WIRING

Typical piping and wiring

6

1. Values listed in the Selection Date table were determined by using SELECTION NO. 2 (Non-Standard Evaporator Passes and Other Than condenser water equivalent to 3.0, 3.6 and 4.2 gpm per nominal ton. 10 F Chilled Water Temperature Rise)These values do not represent minimum and maximum water flow I Determine capacity of 16JB041.rate. Design conditions same as in Selection NO. 1, except: use 680 gpm

2. Selection data shown in the tables is based on 0.0005 fouling factor in chilled water, with 15 F rise; 3-pass evaporator; 1191 gpm condenser the absorber - condenser. For 0.001 fouling factor, increase the water.condensing water temperature 2.5 F. Refer to Evaporator Pass-Rise Temperature Adjustment table,

3. Selection data tables are based on standard evaporator passes listed page8. A 15 F rise and 3-pass evaporator requires an adjustment of for each machine size, 10 F chilled water temperature rise and +1.5 F.0.0005 evaporator fouling factor. Values for other than standard Adjusted LCWT = 45+1.5 = 46.5 Fconditions may be calculated by using correction factors given in the Enter Selection Data table page 13, at 85 F ECWT, 14 psig steam Evaporator Pass-Rise Temperature Adjustment table and Base and 46 F-LCWT. At 1191 gpm condenser water (un-shaded value), Steam Rate Adjustable Factor table. capacity is 429 tons; at 48 F LCWT capacity is 445 tons. By

4. Selections falling between listed values can be approximated by interpolation, at 46.5 F LCWT, capacity is 433 tons.interpolation. II To complete the selection, follow procedure in Selection No. 1

5. For applications where full design load is expected with low using 680 gpm chilled water flow, 1191 condenser water flow, condensing water temperature, a method of maintaining condensing and 433 tons capacity.water temperature at design is recommended. SELECTION NO. 3 (Hot water)

Given:Selection methodsDesign conditions given in Selection No. 1, except: use hot water, at For job conditions within the scope of the listed tonnage values and 288 F entering temperature.adjustment factors, machine selections can be made by the

I Determine hot water temperature drop.procedures outlined in the following examples.Refer to Hot Water Generator-Equivalent Steam Pressure Curve, Selection examplespage 8. Enter curve at 288 entering hot water temperature. At 14 psig

SELECTION NO. 1 (Steam)equivalent steam pressure, read 232 F leaving hot water

I Selection made fro selection data tables.temperature. Hot water temperature drop = 288 - 232 = 58 F

Given:II Select a unit.

Capacity RequiredFollow procedure as in Selection No. 1 using 14 psig equivalent

Entering Chilled Water Temp (ECWT)steam presuure.

Leaving Chilled Water Temp (LCWT)III Determine hot water flow rate (gpm).

Chilled Water QuantityAvailable Steam Pressure (Valve Inlet)Steam Pressure at Unit

Pressure Drop Thru ValveEntering Condenser Water Temp (ECWT)Absorber-Condenser Fouling FactorEvaporator Fouling FactorRefer to Nominal Capacity Data table, page 8 and select a unit with a

IV Determine generator pressure drop.capacity equal to or lower than the required capacity. (if the capacity

Refer to Generator Hot Water Flow vs Pressure Drop curve page 8. of the machine selected by this methods does not meet job

For a 16JB041, at 257 gpm hot water flow, pressure drop is requirements, try the next larger size unit.) The 16JB041 falls within

approximately 2 feet.this range.

SELECTION NO. 4Turn to selection Data tables for 16JB041 on page 13. The listed

(Absorber-Condenser Fouling Factor = 0.001):values are for 10 F chilled water rise, with a 2-pass evaporator. At

I Determine capacity for Selection No. 1.given conditions of 85 F ECWT, 45 F LCWT and 14 psig steam,

Add 2.5 F to ECWT, (See Selection Note 2.)capacity is 421 tons at 1191 gpm condenser water (unshaded value)

Corrected ECWT = 85 + 25 = 87.5 Fand 447 tons at 1429 gpm condenser water (gray shaded value). By

Refer to 16JB041 Selection Data table at 1429 gpm of condenser interpolation, 1230 gpm condenser water is required for design

water at 85 F ECWT, 45 F LCWT and 14 psig steam, capacity is 447 capacity of 425 tons.

tons: at 90 F ECWT, capacity is 394 tons. By interpolation: at 87.5 F II Determine pressure drops.

ECWT, capacity is 420 tons.Refer to the curves below the 16JB041 Selection Data table. Enter

II Complete selection using procedure for Selection No. 1the upper curve at 1020 gpm; for a 2-pass evaporator, find a pressure drop of 16 feet.Enter lower curve at 1230 gpm and find absorber-condenser pressure drop of 15 feet.

III Determine steam rate and steam consumption.refer to Physical data table in 16JB041 column. Base steam rate is 18 lb/ton-hour. Adjust steam rate for specified condition per Base Steam Rate Adjustment Factor table. For 85 F ECWT and 45 F LCWT, factor is 0.99.Adjusted steam rate

Steam consumption

IV Determine condensing water temperature rise.

Selection procedureSelection notes

425 tons.55F45 F

1020 gpm20 psig14 psig

6 psi85 F

0.00050.0005

design capacity (tons)

hot water temp drop

1.9 17.8 425

56257 gpm

Flow rate =

7

= Base steam rate adj factor= 18 lb/ton-hr 0.99= 17.8 lb/ton-hr= 17.8 425 tons (design capacity)= 7570 lb/hr

16JB TONS 16JB TONS 16JB 16JB 16JB TONS TONS TONS

010012014

100116132

018021024

174201233

028032036

270312349

041047054

397455490

057061068

522562618

NO.OFPASSES

TEMPRISE (F)

TEMPADJ (F)

11111233

4568

104-15

10-1214-15

-1.5-2.0-2.0-2.5-3.5

0+1.0+1.5

ADJUSTED ENT.COND. WATER

TEMP. (F)

80

85

87.5

90

ADJUSTED LEAVING CHILLEDWATER TEMP (F)

42 43 44 45 46 48 50

0.99

1.02

1.03

1.04

0.98

1.01

1.02

1.04

0.98

1.00

1.01

1.03

0.97

0.99

1.01

1.02

0.96

0.98

1.00

1.01

0.95

0.97

0.98

1.00

0.94

0.96

0.97

0.98

240

240 250 260 270 280 290 300

230

230

220

220

210

200

14

20

10

00 2 4 6 8 10 12 14

NOMINAL CAPACITY DATA*

At 12 psig steam , 44 F LCWT , 85 F ECWT and 3 gpm of cond water per nominal ton of refrigeration .*

EVAPORATOR PASS-RISE TEMP ADJUSTMENT* BASE STEAM RATE ADJUSTMENT FACTOR

*Apply adjustment as noted(+ or-) to specified LeavingChilled Water Temp.

HOT WATER GENERATOR - EQUIVALENT STEAM PRESSURE

LEAVIN

G H

OT

WATE

R T

EMP. (F)

010

012

014

018021

028

032036

041047

054057

061 068

024

ENTERING HOT WATER (F)

PRES

SURE

DRO

P (FT

)

GP (lOO’S)M

12

10

8

EQUIVALENT STEAM PRESS. (PSIG)

8

ECWT(F)

STM( psig)

LEAVING CHILLED WATER TEMP. (F)

42 43 44 45 46 48 50

117 119 121 124 127 131 135133 136 139 142

143 145 157 161

145 149 152123 125 127 129 131 136 140

135 144 146 149 153 157131 133 136 140

121 111

114

101 96

80 92 86 99 93

100 115 106

131

124

123 114

116

104 99

83 95

89

109 117 102

133

127 116 125

118

121

114

85 98 92

111 120 105

136

138

130 119 134 121

101 95

130

123

116

88

101 109 106

99 102 96

113

107

111

105

108

103 100

104 102

116

114 123 108

138

140

132 121 137 123

104 97

132

125 134

119

90

104 112

122

110

107

118

127

115

112

129

126 111

116

147 142

144 153

137 126 141 128

111

143 130 145

124

96

110 119 103

131 115

121

158 147

149166

141130145132147

135150

129

102

114125

117131

133

119

119

110117

136125

164

8

10

12

13

14

8

10

12

13

14

8

10

12

13

14

14580

85

90

ECWT(F)

STM( psig)


42 43 44 45 46 48 50

101 103 105 107 110 113 116116 118 120 122

122 123 130 135 139

124 127 130106 108 110 112 114 117 121114 117 124 126 128 131 135111 113 114 116 117 121 125

112

92

104 99

96

114

108 94

106 98

101

102 88 86

99

116

117

109 96

100 113 103 110 105

85

93 86 99 89 96 91

98

80

74

103

83

89 83 96 86

94 89

77

72 80

86 81 88 84 91 87

75

70

105 91

117

119

111 98

102 115 105 117 107

88

96 88 101 91

103

93 100

82

76 114

107 93

119

121 129

113 105 118 107 119 109

91

98 90 103 93

105

95

107

85

78 121

109 95

100

127 125 123

124 138

117 109 121 111 124 113

96

103 95 107 97

109

99

110

90

83 126

113 99

104

137 127

128143

122113126115128116

102

10799110101113

103115

95

88

129

103117109

141

8

10

12

13

14

8

10

12

13

14

8

10

12

13

14

80

85

90

105

132 128 130

Based on 300 gpm cond water , 2-pass evap , 10 F temp riseBased on 360 gpm cond water , 2-pass evap , 10 F temp riseBased on 420 gpm cond water , 2-pass evap , 10 F temp rise

Based on 348 gpm cond water , 2-pass evap , 10 F temp riseBased on 418 gpm cond water , 2-pass evap , 10 F temp riseBased on 458 gpm cond water , 2-pass evap ,10 F temp rise

ECWT ECWT - - Entering Entering Condensing Condensing Water Water Temp. Temp. S ST TM M- -S St te ea am m

SELECTION DATA SELECTION DATACAPACITY(TONS) CAPACITY(TONS) 16JB010 16JB012

PHYSICAL DATA PHYSICAL DATA

ELECTRICAL DATA (3-Phase) ELECTRICAL DATA (3-Phase)

CAPACITY (tons)...100 STEAM RATE (Ib/ton-hr)....18.0

WEIGHT (Ib).......Operating 10,230; Rigging 7,990



VOLTAGE VOLTAGE PUMP PUMP BHP BHP FLA FLA LRA LRA MFA MFA

Solution Solution

Refrig. Refrig.50 Hz/380-415 50 Hz/380-415

BHP - Brake Horsepower FLA - Nameplate Full Load Amps. LRA - Nameplate Locked Rotor Amps. MFA - Max Fuse Amps.

3.0 3.0

5.0 5.0

6.0 6.0

10.5 10.5

27.5 27.5

41.0 41.016 16

9

10

ECWT(F)

STM( psig)


42 43 44 45 46 48 50

175 178 182 186 191 197 202199 204 208 213

215 218 235 242

217 224 228183 187 190 194 197 204 211

202 205 220 223 229 236197 200 204 211

182 167

171

151 145

120 138 129 148 139

150 172 159

197

186

184 171

174

156 149

124 142 133

163 176 154

200

191 174 188 178

181

170

127 146 138

167 180 157

204

207

195 178 192 181

151 142

195

184

174

131

152 164 160

148

154 144

169

161

166

158

161

154 150

156 153

174

171 185 162

207

211

198 182 205 185

156 146

198

188 201

178

135

155 169

182

164

160

177

190

172

168

193

190 166

174

221 213

215 229

205 188 211 192

167

214 195 217

187

144

164 178 155

197 172

181

238 220

224249

212195218199221

202225

193

153

172187

175196

199

179

179

164176

204188

246

8

10

12

13

14

8

10

12

13

14

8

10

12

13

14

21780

85

90

ECWT(F)

STM( psig)


42 43 44 45 46 48 50

133 136 138 141 144 148 153152 154 157 160

159 157 169 172 178 183

163 167 171139 142 145 147 150 155 159150 160 162 165 167 172 178145 148 150 152 155 159 164

147

121

137 130

127

150

141 124

140 130

132

134 116 114

131

152

154 152

144 127

132 148 135 144 138

112

122 114 130 117 133 120

129

106

97

135

108

118 110 127 114 124 117

102

94

132

105

113 107 124 111 120 115

98

91

137 119

155

157 167

146 129

135 151 138 154 141

116

126 116 132 119 135 122 137

109

100 149

140 123

157

159 169

149 138 154 141 157 143

120

130 119 135 122 137

125

139

112

103 159

143 126

132

175 164 162 162

164 182

154 143 159 146 162 148

127

135 125 140 129 143

132

147

118

110 165

148 131

137

180 166

168187

159148165151168153

134

140131145133148

136151

124

116

170

136153143

185

8

10

12

13

14

8

10

12

13

14

8

10

12

13

14

80

85

90

139

198 192 194


Based on 522 gpm cond water , 2-pass evap , 10 F temp riseBased on 626 gpm cond water , 2-pass evap , 10 F temp riseBased on 730 gpm cond water , 2-pass evap ,10 F temp rise

ECWT ECWT - - Entering Entering Condensing Condensing Water Water Temp. Temp. S ST TM M- -S St te ea am m








VOLTAGE VOLTAGE PUMP PUMPBHP BHP FLA FLA LRA LRA MFA MFA

Solution Solution



3.0 3.0

5.0 5.0

6.0 6.0

10.5 10.5

27.5 27.5

41.0 41.016 16

11

ECWT(F)

STM( psig)


42 43 44 45 46 48 50

198 203 208 213 217 226 233227 232 237 242

243 246 262 270 279

246 254 261209 213 218 223 228 235 243225 230 246 250 255 262 270218 223 228 232 235 243 250

181

196

191

227

213 186

212 196

201

201 175 170

196

232

235

218 191

201 216 206

210

166

186 173 198 178 192 183

161

145

205

161

179 168 193 173 187 178

155

140 156

172 163 177 168

173

150

136

206 180

235

239

222 196

206 230 210 224 214

174

191 177 202 182 206 186

200

166

151

212 185

239

243 258

227 210 235 214 238 218

182

197 181 205 186 209 190

213

171

157 231

217 190

201

254 250 246

249 277

235 218 242 222 246 225

193

206 190 213 196 218 201

223

180

167 251

226 199

209

274 253

256285

243225250229255233

204

214199222203226207

230

189

177259

207234218

282

8

10

12

13

14

8

10

12

13

14

8

10

12

13

14

80

85

90

207


ECWT - Entering Condensing Water Temp. STM -Steam

ECWT(F)

STM( psig)


42 43 44 45 46 48 50

232 237 243 249 254 264 270265 271 276 282

285 303 314 324

287 296 303244 249 255 259 264 273 282

269 287 291 295 304 314263 281

268 273 282

242 223

229

202

194

159 182 171 197 186

199 229 211

264

248

246 228

233

222

199

164 188 178

217 235 204

268

273

253 233 250 238

242 238

228

169 194 185

223 241 210

273 290 277

258 238 267 243

201 190

259

247

233

174

203 220 214

198 205 192

238

216

223

212

216

206 200

210 205

232

228 247 216

277

282 300

263 243 272 248

208 196

276

252 267

237

180

208 226

242

220

214

246

252

231

226

256

253 222

233

295 285

288 321

272 252 281 257

224

286 261 290

247

193

220 237 207

262 231

242

317 295

299333

281261290266296

270301

256

205

230248

235261

266

240

239

220236

271252

329

8

10

12

13

14

8

10

12

13

14

8

10

12

13

14

29180

85

90

263 255 259











Solution Solution



3.0 5.0 10.5

10.5

41.0

41.0 5.0

6.0 27.5

5.0 10.5 41.016 16

12

ECWT(F)

STM( psig)


42 43 44 45 46 48 50

267 274 280 287 293 303 313305 313 320 326

327 331 352 363 374

332 341 351281 288 294 300 306 316 326303 310 331 337 343 352 363294 300 306 312 316 326 336

244

264

258

306

287 251

284 264

270

271 236 229

264

312

316

293 257

270 290 276

282

224

250 232 267 239 259 245

216

195

276

217

240 225 260 232 252 239

209

189 210

231 219 237 226

233

201

183

278 242

316

321

299 264

276 310 282 301 288

234

258 237 272 244 277 250 269

223

203

285 249

321

326 347

305 282 315 288 320 293

244

265 243 276 249 281 255 286

230

211 311

292 256

270

341 336 330

335 372

315 292 325 298 331 303

259

277 255 287 263 293 270 300

242

224 337

304 267

281

368 340

344383

327302336308343313

274

287267298273303278309

254

238348

278

314293

379

8

10

12

13

14

8

10

12

13

14

8

10

12

13

14

80

85

90

280

Based on 810 gpm cond water , 2-pass evap , 10 F temp riseBased on 972 gpm cond water , 2-pass evap , 10 F temp riseBased on1134 gpm cond water , 2-pass evap , 10 F temp rise


ECWT(F)

STM( psig)


42 43 44 45 46 48 50

311 318 326 333 341 353 362355 363 371 378

382 406 420 433

385 397 406327 334 341 347 353 365 378

360 384 390 396 407 420353 376

359 365 378

325 300

307

270 259

213 244 229 263 250

267 307 284

353

333

330

306

312

297 267

220 252 239

292 315 274

359

365

340 312 335 318

324 319

306

226 260 248

299 323 282

365 388 371

346 319 357 325

269 255

347 331

312

234

272 295 286

265 275 257

319

289

298

283

289

276 268

281 274

311

306 332 289

371

378 401

352 326364 332

278 262

369 337 358

318

241

279 303

324

295

287

330

337

309

302

343

340 297

312

395 382

386 430

364 338 376 344

300

382349

389

331

259

295 318 277

351 309

324

425 395

401446

376349389356396362403

343

274

308332

314350

356

321

320

295316

363337

440

8

10

12

13

14

8

10

12

13

14

8

10

12

13

14

38980

85

90

352 342 347











Solution Solution



5.0 5.0 10.5

10.5

41.0

41.0 5.0

10.5 41.0

5.0 10.5 41.016 16

13

ECWT(F)

STM( psig)


42 43 44 45 46 48 50

345 353 361 370 378 392 405394 402 410 418

421 447 454 469 483

426 439 451363 371 379 387 395 409 422391 417 425 433 440 455 469379

388

388 396 402 409 422 434

315

341

333 359

395

369 324

366 341

349

349 304 296

340

402

408

376 333

349 390 358 380

365

289

323 300 343 309 334 317

280

251

357

280

311 291 335 300 326 309

270

244 271

299 283 306 292 317 301

260

236

358 313

409

415

384 341

357 398 365 405

371 394

302

332 307 349 315 355 324

340

288

262

368 322

415

422 448

392 365 405 372 413

378

316

341 314 354 322 361 330

345

297

273 420

376 330

349

462 434 427

432 481

405 378 420 385 428 391

335

355 330 369 340 378 349 387 367

313

290 435

390 346

363

475 440

445495

421391435398442

405

352

369345384352391359399

329

307450

359404

379

489

8

10

12

13

14

8

10

12

13

14

8

10

12

13

14

80

85

90

360



ECWT(F)

STM( psig)


42 43 44 45 46 48 50

393 402 412 421 431 450 461449 459 468 477

485 516 534 551

486 504 514413 423 432 441 450 464 480

455 485 493 502 517 535449 477

457 464 480

410 379

389

344 330

269 309 292 335 318

337 388 359

448

421

417 388

397

378 339

278 318 304

369 398 347

457

464

429 397 425 405

413 405

388

286 329 316

379 408 356

465 494 472

438 406 453 414

341 324

432 421

395

296

346 375 364

337 350 327

404

368

378

360

368

351 341

357 349

394

388 419 366

473

480 510

447 415462 422

354 333

440 429

447

402

307

355385

411

375

365

419

428

393

385

437

429 376

397

502 486

491 547

462 430 478 437

381

469445

455

420

330

375 403 353

445 393

413

541

503

510567

477445494453503486460

494 512

435

349

391421

400

444

453

409

407

375401

460429

559

8

10

12

13

14

8

10

12

13

14

8

10

12

13

14

49580

85

90

445 432 440

Based on 1191 gpm cond water , 2-pass evap , 10 F temp riseBased on 1429 gpm cond water , 2-pass evap , 10 F temp riseBased on 1667gpm cond water , 2-pass evap , 10 F temp rise







WEIGHT (Ib).......Operating 29,240; Rigging 18,000(Abs-Evap)


Solution Solution



5.0 5.0 10.5

10.5

41.0

41.0 5.0

10.5

5.0 10.5 41.0

41.016 16


5,550 (Gen-Cond)23,550(One piece)

14

ECWT(F)

STM( psig)


42 43 44 45 46 48 50

484 495 505 516 527 549 572551 564 577 589

584 628 608 621

602 628 617508 519 530 541 552 575 598

592 605 618 630 620 553

572

541

564 576 598

508 469 534 480 516 490

464 418 450

360 411 385 438 408

422 481 446

553

521

547 479

490 528

476 428

371 422 395

457 493 433

564

552

533 490 559 501

512 551

501 539

487

381 434 405

467 505 443

575 595 563

545 501 572 512

445 415

571 523

499

391

438 473 461

428 450 418

512

460

500

449512

488

439472

428461

449 439

524

478 517 453

587

574 618

558 512582 523

457 426

581 534

590

512

401

449485

524

470

460

534

545

492

481

554

529 464

489

608 610

586 628

583 534 603 545

480

592556

601

535

421

470 509 446

554 485

510

620 632

597 621

604556624568634613578

622 614

556

442

491534

502566

575

507

513

467505

579532

630

8

10

12

13

14

8

10

12

13

14

8

10

12

13

14

62280

85

90

579 531 542



SELECTION DATACAPACITY(TONS)

ECWT(F)

STM( psig)


42 43 44 45 46 48 50

451 462 473 484 495 511 528515 527 538 548

549 558 593 612 631

558 574 590474 485 496 506 516 533 550511 547 558 567 576 593 612496 506 516 525 533 550 566

411

445

435

516

483 423

479 445

455

457 398 387

446

525

532

493 434

455 488 466 497 475

377

421 391 449 402 436 413

364

328

465

366

405 380 438 391 425 403

352

319 354

390 369 399 381 413 393

339

309

469 409

533

541

503 445

465 520 476 506 484 514

394

434 400 457 411 465 422

376

342

481 420

541

550584

513 475 530 485 539 493

411

446 409 464 420 472 430

452

387

356

524

493 431

455

575 566 557

564 627

530 493 548 502 558 510

437

465 430 482 444 494 455 505480

408

378

567

511 450

473

620 573

580646

549510567519577528

462

483450501459511468

520

429

400

587

469

528

494

638

8

10

12

13

14

8

10

12

13

14

8

10

12

13

14

80

85

90

472



SELECTION DATACAPACITY(TONS) 16JB047 16JB054



WEIGHT (Ib).......Operating 30,120; Rigging 17,300 (Abs-Evap)

5,930 (Gen-Cond) 23,230 (one piece)


WEIGHT (Ib).......Operating 35,340;; Rigging20,100(Abs-Evap)

6,340 (Gen-Cond )

VOLTAGE VOLTAGE PUMP PUMP BHP BHP FLA FLA LRA lRA MFA MFA

Solution Solution



5.0 5.0 10.5

10.5

41.0

41.0 5.0 5.0 10.5

10.5

41.0

41.016 16


15

ECWT(F)

STM( psig)


42 43 44 45 46 48 50

515 526 538 550 561 585 609588 601 615 628

670 609 682 662

642 670 659541 552 564 576 588 612 637617 631 645 659 672 661 565 577

658 589 601 613 638 663

475

510 550 521 562

499 569

588 635 599 647

576 622 587

555 486

582 510

522 596

525 460 449

512

600 680

612 659

568 497

522 596 533 608 545 618

491

462

455 519 467 533 478 545

431

405

533 575

479

450

444 506 455 520 467 532

420

394

467

438

433 494 445 507 456 491

410

382

538 471

612

624 670

581 509

533 609 545 619 556 629

504

474

466 532 478 546 489

442

416

551 482

625

636681

595 545 620 557 631 568

517

487

477 545 489 559 500

558

453

427 640

564 494

520

672 661 650

661

621 569 643 581 653 592

543

512

500 571 512 581 523 591569

448

475

663

591 517

543

673

682

644593666605676616

569

538

523593535603547

613

498

470686

540618567

8

10

12

13

14

8

10

12

13

14

8

10

12

13

14

80

85

90

542



ECWT(F)

STM( psig)


42 43 44 45 46 48 50

554 567 579 592 604 630 656633 647 662 677

708 721 733 712

692 722 709582 595 607 620 633 659 689

737680 695 710 723 712 634

695

620 669

647 660 687736

583537613549 592 561605

532479546

411471441502466

484

552511

633

597

628549

562 642

546490

423484452

523565

495

647

633

612562642574

586665

574619

559

436497464

535579

507

660 683646669

626574655587

511476

654 599

573

448

502543529

490516478

588

526

574

514588

560

502573

490528

514502

600

548593

519

673

659708

641587668600

524487

666 612

677

587

459

514557

601

539

526

612

625

564

551

636

608

532

560

732700746

672720

669612692625

551

678638

689

614

483

538585511

636

556

585

710724

685732

711 734

693638716652728703663

714 738

637

507

563613

576649

659

581

589

536579

666611

722

8

10

12

13

14

8

10

12

13

14

8

10

12

13

14

71480

85

90

665 608 621







6,510 (Gen-Cond)



8,220 (Gen-Cond)


Solution Solution



3.0 5.0 10.5

10.5

41.0

41.0 5.0 5.0 10.5

10.5

41.0

41.016 16


The dilution cycle begins when START-STOP switch is pressed to "stop". Holding relay (1K12) is energized and Controlsthe Cycle-Guard valve opens. When the refrigerant drops Control sequenceto a predetermined level, (SW4) opens; (1K11) and The following is for general guidance only. For (1K12) are de-energized and the machine shuts down.specific application, detailed wiring diagrams are

available from field office.Assume: there is power to the control circuit; all the

pump switches and capacity control switch are on; Cycle-Guard switch (1S4) is at "Auto"; all liquid-level switches are in normal position for running.

Press and release momentary RESET switch (1S2); holding relay (1K4), is energized and (1K4) contacts close. Press START-STOP switch (1S3) to "Start" position; holding relay (1K10) is energized and (1K10) contacts close. Control circuit is now complete, solution and refrigerant pump contactors are energized and the capacity control valve actuator starts to open the valve. Machine is now in normal operation.

The refrigerant high level switches (SW1 SW2 SW3) and thermo switches (TSW2, TSW1) control the Cycle-Guard valve, and thus prevent overconcentration.

16

ECWT(F)

STM( psig)


42 43 44 45 46 48 50

610 624 637 651 665 694 722698 714 730 746

796767 810 785

763 796 781641 655 669 683 697 726 755

814733 750 766 783 798 785669 683

782698 712 727 756

812786

563

605692618667

591676

697794

711768

683738

696752

659576

692605

618708

624545532

608

712808

725781

675589

618708632722645734

584

548

539617553633

566648

511

479

632720

569

534

526602540617

553633

498

465

554

520

513587527602

540617

485

452

639558

726

740795

691603

632723646735659747

599

563

552632566648

580

523

493

654572

741

754808

707646737660749674

614

578

566648580664

593662

536

505761

670585

617

797783770

784

738674764688776702

645

608

593678607690

620702675

531

563

788

702612

644

798

809

765703791717803730

676

639

620704634716

648728

590

558815

640

734

672

8

10

12

13

14

8

10

12

13

14

8

10

12

13

14

80

85

90

643



SELECTION DATACAPACITY(TONS) 16JB068

ELECTRICAL DATA (3-Phase)



8,420 (Gen-Cond)

VOLTAGE PUMP BHP FLA LRA MFA

Solution

Refrig.50 Hz/380-415

BHP - Brake Horsepower FLA - Nameplate Full Load Amps.LRA - Nameplate Locked Rotor Amps.MFA - Max Fuse Amps.

5.0

5.0 10.5

10.5

41.0

41.016

PHYSICAL DATA

CONTROL WIRING 220V

FUSENSORPt100

TRANSFORMER220V-127 (1T1) TEMPERATURE

CONTROLLER(1ET1)

1K2

1K2

1K5

1K5

1K6

1K6

1K10

1K10

1S2

1K1

1K3

1K4

1K4

1K4

1K4

1K4

1K3

1K5

1K5

1K5

1K6

1K6

1K6

1K7

1K7

1K7

C1

1K8

1K8

1K9

1K9

1K8

C2

R

1K10

1K10

1C1

1KM1

1KM2

1K12

1FO1

1K4

1K9

A

1K11

1F1

1F2

THERMOCONTACTSOLUTION PUMP

THERMOCONTACTREFRIGERANT PUMP

SW8

SW6

SW7

SW5

OFF

ON 1S3

FU

FU

Sw41

2

3

1S4TSW1

TWS2

SW1

SW2

SW3

1F03

LLC

1K11 1KM1

1KM1

1KM2

1KM2

1K12CG

1K1

1K2

CAPACITY CONTROL VALVE

LEGEND ( Continued on next page )

W

M

TRANSFORMER220V-110V (1T1)ONLY COIL 110 V

1K11

17

Nozzle arrangements

1C1 HOUR COUNTER1F01 MAIN CIRCUIT BREAKER1F03 MAIN CIRCUIT BREAKER1ET-1 TEMPERATURE CONTROLLER1F1 COMPACT STARTER SOL PUMP1F2 COMPACT STARTER REF PUMP1K1,2,4,5,6,7,8,9,10,11,12 CONTACTOR RELAY1K3 TIMING RELAY1KM1 COMPACT STARTER SOL PUMP1KM2 COMPACT STARTER REF PUMP1S2 RESET SWITCH1S3 ROTARY SWITCH ON-OFF1S4 ROTARY SWITCH AUO-HANDC1 CONDENSING WATER PUMP STARTERC2 CHILLED WATER PUMP STARTERCG CYCLE GUARD VALVE

LLC LOW LEVEL CONTROL EXTENDER VALVESW1,2,3 CYCLE GUARD CONTROL SWITCHSW4 LOW LEVEL AND DILUTION SWITCHSW5 PURGE LEVEL SWITCH SW6 COND. WATER PUMP FLOW SWITCHSW7 CHILLED WATER PUMP FLOW SWITCHSW8 LOW TEMPERATURE CUTOUTTSW1,2 THERMO SWITCHFU FUSE FACTORY WIRING FIELD WIRING

RUN LIGHT PURGE LIGHT

CYCLE-GUARD LIGHT

A

R

W

LEGEND (Continued)

1-Pass 2-Pass

2-Pass

3-PassIn

In

In

In

In

In

Out

Out

Out

Out

Out

Out

A

A

A

A

A

A

r

r

r

r

r

r

r

r

r

r

r

r

12

710

79

710

21

89

ZY

810

89

ZY

35

46

XW

53

46

VU

TS

Size010-014

Size024-028

Size 018-021,032-068

CONDENSERWATER BOXES

GENERATOR

ABSORBERWATER BOXES

EVAPORATORWATER BOX

EVAPORATORWATER BOX

RIGHT ENDLEFT END

4

1

3

7

8

9

10

6

2

5

Arr - ArrangementNOTES:1. All machines have 1 -pass condenser.2. Generator water box is located on left end only.

ZY

EVAPORATOR

ABSORBER

18

Dimensions

*Standard shipping configuration is 1-piece for sizes 010-047; 2-pieces for sizes 054-068.Dimension “D” is height of absorber/evaporator section for 2-piece shipment

NOTES:1. All dimensions are approximate and do not take into account absorber condenser crossover piping.2. For routine maitenance, allow 3 ft (1 m) clearance all sides 6 in. (150 mm) above chiller.3. For service access, allow clearance as follows: a. For tube removal, allow space equal “A” dimension (length) at either end of the chiller. B. To open waterbox cover, allow clearance space equal to half of “B” dimension (width) on the waterbox end of the chiller.

UNIT 16JB 010 012 014 018 021 024 028 032 036 041 047 054 057 061 068

UNIT 16JB 010 012 014 018 021 024 028 032 036 041 047 054 057 061 068

Overall

Overall

Length

Length

A

A

16- 9 16- 9 16- 9 16- 9 16- 9 16-11 16-11 16-10 16-10 16-10 16-10 21- 8 21- 8 21- 8 21- 8

Overall

Overall

Width

Width

B

B

3- 8 3- 8 3- 8 4- 5 4- 5 5- 1 5- 1 6- 4 6- 4 7- 5 7- 5 6- 4 6- 4 7- 4 7- 4

Overall

Overall

Height

Height

C

C

7- 4 7- 4 7- 4 7-10 7-10 8-10 8-10 10- 2 10- 2 11- 6 11- 6 11-10 11-10 13- 2 13- 2

Height

Height

D*

D*

4-10 4-10 4-10 5- 7 5- 7 6- 3 6- 3 7- 4 7- 4 8- 7 8- 7 8- 2 8- 2 9- 7 9- 7

DIMENSIONS (ft-in.)

DIMENSIONS (mm)

5105

1120

2230 2230 2230 2390 2390 2540 2540 3110 3110 3505 3505 3605 3605 4020 4020

1120 1120 1350 1350 1550 1550 1930 1930 2260 2260 1930 1930 2230 2230

5105 5105 5105 5105 5160 5160 5130 5130 5130 5130 6605 6605 6605 6605

1473 1473 1473 1702 1702 1905 1905 2235 2235 2616 2616 2489 2489 2921 2921

TYPICAL SIDE VIEW

16JB SIZES 010-068

TYPICAL END VIEW

19

Guide SpecificationsHermetic Absorption Liquid Chiller

Size Range: 108 to 680 Tons (380 to 2392 KW)

Model Number: 16JB

performed on the generator at 1.25 times rated design pressure.

3. Final assembly inspection shall consist of ver i fy ing that a l l values, contro ls, instrumentation, pumps, purge components, and all other machine components have been properly installed on the machine.

Part 1 - General 4. Each unit shall than be checked for overall appearance and dimensional accuracy.

1.01 SYSTEM DESCRIPTION5. Final inspection shall be performed on each

unit to check that painting of the unit is as Electronically controlled, single effect (one-stage) specified, name plate data is correct, and that absorption liquid chiller utilizing hermetic all accessories are furnished as required.refrigerant and solution pumps, lithium bromide

solution as the absorbent, and water as the 1.03 DELIVERY, STORAGE, AND HANDLINGrefrigerant. Low pressure steam or hot water shall

be supplied to the generator as the heat source.A. Unit shall be stored and handlid in accordance

with the manufacture's recommendations.1.02 QUALITY ASSURANCE

B. Unit shall not be factory-charged with lithium A. Chiller performance shall be rated in accordance bromide solution to prevent possible internal

with ARI Standard 560 (latest edition). corrosion damage from occurring should be inside of the machine be accidentally exposed to

B. Chiller shall be manufactured in accordance with air during shipment and/or installation. Charging ANSI/ASHRAE 15 (latest edition) Safety Code of lithium bromide solution shall be performed at for Mechanical Refrigeration. the jobsite in accordance with the manufacture's

written instructions.C. The tubeside of the absorber and evaporator One-piece units shall be shipped under vacum on

sections (when applicable) and the tubeside of the shellside. Two-piece units shall be shipped the generator (for hot water applications) shall with 5 psig (34 kPa) nitrogen pressure.be designed, constructed, and in accordance with ASME Section VIII, Division 1 requirements. C. One-piece units shall be shipped under vacum

on the shellside. Two-piece units shall be D. Each chiller shall undergo a series of standard shipped with 5 psig (34 kPa) nitrogen pressure.

factory tests to ensure that the unit is leak tight, that all electrical components operate as D. Chiller shall be shipped with nameplatess intended, and that every aspect of unit indicating name of manufacture, model size, fabrication meets stringent quality standards in serial number, and all other pertinent machine accordance with good practice and the data.manufacture's quality assurance requirements.

1.04 WARRANTY1. The shellside of each chiller shall be leak tested by pressurizing to 15 psig (103 kPa)

Manufacture shall guarantee the chiller against with dry air and then checked by spraying a defects in materials or workmanship for a period of soap/water mixture on all welds, tube joints, one year from data of initial operation or 18 months and/or gasketed joints to identify any major from data of shipment, whichever occurs first. leaks. Afterward, a mass spectrometer test Manufacturer shall provide the labor to repair or shall be performed by evacuating the unit to replace any part found to be defective in material or 0.10 mm Hg absolute, covering the machine workmanship within the warranty period.with a vinyl tent and introducing helium gas

under the tent. Any remaining leaks will allow Part 2 - Productsthe helium to be drawn into the shellside of the

machine. The acceptable total leak rate as 2.01 EQUIPMENTmeasured by the mass spectrometer test shall

not exceed 0.00002 cc/sec standard air.A. General:

2. The tubeside of the evaporator, absorber, Absorption liquid chiller shall include evaporator, condenser, and (steam) generator shall be absorber, condenser, generator, solution heat hydrostatically tested at 1.5 times rated exchanger, refrigerant/solution pumps, purge design pressure and held for 1 hour. For hot system, piping, wiring, controls, and auxiliaries. water applications, a pneumatic test shall be Shipment of the machine shall be in 1 or 2

20

piece(s), depending on model size. Initial charge working pressure for steam applications or of lithium bromide shall be included with the 250 psig (1752 kPa) working pressure for hot chiller for charging at the jobsite. Generator shall water applications. All hot water generators be designed for operation on either low pressure shall be designed, constructed, and in steam or hot water as specified on the accordance with ASME Section VIII, Division equipment schedule. A U-baffle shall be 1 requirements on the tubeside. For steam provided in both the upper and lower shell to applications, a vacuum breaker shall be serve as a natural insulating barrier between factory supplied on the machine.sections. The double sump formed by the U-baffle in the bottom of the absorber-evaporator 4. A solution heat exchanger shall be an integral section shall allow temporary storage of part of the nachine to increase efficiency by refrigerant or solution, thereby reducing service pre-heating weak solution on the tubeside time and expense by alleviating the need to with strong solution on the shellside. Tube remove the fluids from the machine during material for this heat exchanger shall be service and/or maintenance operations. carbon steel.

B. Operating Characteristics: 5. Spray heads for the evaporator and absorber shall be fabricated of a corrosion-proff

1. Chiller operation shall be characteristic of a material to ensure continuous, high efficiency single effect absorption cycle. The weak operation.solution pumped from the absorber to the generator shall initially pass through a solution 6. Heat exchanger tube material and minimum heat exchanger to improve operating wall thickness shall be contingent on the type efficiency by preheating the weak solution on of corrosion inhibitor used in the machine. the tube side with the strong solution returning The following tube specifications shall apply from the generator on the shellside. to ensure long machine life and continuous

operation:2. Unit shall be capable of continuous operation Evaporator

from 100% to 10% capacity, with entering Absorbercondenser water temperatures as low as 55 F Condenser

O Generator(13 C) without the need for a cooling tower bypass valve. Thermostat on/off control of the

D. Pump/Motors:cooling tower fan is recommended when cooling water temperature falls below 55 F

O Refrigerant and solution pump/motors shall be (13 C).selfcontained, leakproof, hermetic type, without pump seals, isolation valves, or external seal C. Heat Exchangers:water system to minimize air leakage into the machine. Each pump casing shall be welded into 1. All heat exchangers shall be of shell and tube suction and discharge lines and factory installed construction with shells, tubesheets, tube a n d s h a l l i n c l u d e s p r i n g - l o a d e d , support sheets, and waterboxes fabricated of wearcompensating, tapered carbon bearings. carbon steel. All heat exchangers shall Lubrication and cooling shall be accomplished incorporate straight tubes, except for the by the fliud being pumped; auxiliary water piping generator which shall use U-tubes. All tubes for cooling and lubrication shall not be shall be rolled into grooved tubesheets and acceptable. Pump/motor assemblies shall be expanded into tube support sheets. All tubes designed for 50,000 - 60,000 hours of normal shall be individually replaceable.operation between inspections. If pump/motor assemblies are furnished with less than a design 2. The evaporator, absorber, and condenser of 50,000 - 60,000 hours of normal operation waterboxces shall be designed for 150 psig between inspections, they must be provided with (1034 kPa) working pressure and shall be isolation valves and a bearing monitoring system supplied with nozzle-in-head (NIH), type C to aid in diagnosing and performing on-going waterboxes. Removable waterbox covers maintenance.shall permit access to all tubes from either

end. All waterboxes shall be provided with E. Purge Systemvent and drain connections. Nozzle

connections shall be of the flanged-end type An automatic motorless purge system shall be unless otherwise noted.furnished to provide a continuous purging action whenever the chiller is in operation to assure 3. The generator tube bundle shall consist of U-long machine life and efficient performance. bend tubes secured to the tube sheet on one Noncondensables shall be removed from the end only to allow for thermal expansion and absorber by a liquid eductor, which shall use flow contraction. The tubeside of the generator from the solution pump to creat a suction. shall be designed for 15 psig (103 kPa)

copper, externally finnedcooper, prime surfacecopper, prime surface

90/10 CuNi, prime surface

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Noncondensables shall be stored external to the unit and shall be prevented from diffusing back G. Machine Safety Devices:into the machine when the unit is not operating. Evacuation of the external storege chamber 1. Machine safety and limit devices shall be shall be accomplished by manually positions included as follows:valves to pressurize the chamber with lithium a. high refrigerant level - evaporator (limit)bromide solution and exhausting it to b. Low refrigerant level - evaporator (limit)atmosphere. If the purge system design is such c. Low refrigerant temperaturethat it requires a vacuum pump, then it shall be d. High motor winding temperature - unit mounted and wired to the control center by refrigerant/solution pumpthe chiller manufacture. e. High motor amperage - refrigerant/solution

pumpF. Controls: f. Low chilled water flow

g. Low cooling water flow1. Each chiller shall include a factory mounted

and wired control center with lockabledoor. 2. Chiller shall include a rupture disk to protect Machine operation shall be continuously against accidental overpressure.controlled and monitored with the chiller operational status displayed on the front of the H. Electrical Requirements:panel. Panel components shall include an electronic capacity control module, fused 1. Power supply to the unit shall be 3-ph, 50Hz disconnect switch, pump contactors, with voltages of (380 v) specified on the ambient-compensated 3-phase pump equipment schedule.over loads, mul t i - tap contro l power transformer, elapsed time indicator, terminal 2. Contractor shall supply and install the blocks, relays, auto/manual capacity control electrical power line and all auxiliary electrical switch, refrigerant and solution pump pro tec t ion dev ices per loca l code operational switch, exhaust purge light, and requirements and as indicated necessary by all other necessary safeties and control for the chiller manufacturer.proper machine operation.

3. Contractor shall supply and install electrical 2. Capacity control shall be electronic as wiring and devices required to interface the

specified on the equipment schedule by chiller controls with the building control regulating the flow of steam or hot water to the system, if applicable.generator in response to the leaving chilled water temperature. The output from the I. Piping Requirements:capacity or closing of the capacity control valve. The steam control valve shall be valve 1. Piping and instrumentation for the chilled water, shall be field supplied and field installed. cooling water steam and condensate piping (or

hot water supply and return piping) shall be 3. Unit shall include and automatic concentration supplied and installed by the contractor/owner.

control system to prevent overconcentration and overdilution of the lithium bromide 2. Absorber-condenser crosser piping shall be solution at all operating conditions. Operation furnished by the contractor/owner or the chiller shall be based on monitoring concentration manufacturer as specified on the equipment (Via refrigerant level in the evaporator) and schedule.temperature of the solution, and transforming water from the evaporator to the absorber to 3. Chilled water and condenser water flow switch limit concentration when conditions warrant. shall be field installed and supplied by either the Overdilution shall also be controlled via a low chiller manufacturer or the contractor/owner.level switch in the evaporator.

4. Piping from the rupture disk shall be provided 4. Automatic dilution cycle shall lower the and installed by the contractor/owner and piped

concentration of the litium bromide solution to in accordance with the chiller manufacturer's prevent possible crystallization in the heat written instructions and any local jurisdictional exchanger. Control shall be turned off when requirements.refrigerant level falls to a preset level in the evaporator. Control shall be activated by J. Thermal insulationchiller shutdown.

Evaporator surfaces shall be factory insulated insulation of refrigerant pump, sump, piping and chilled water headers, in addition to any hot surfaces shall be field supplied and installed on the machine. Chiller manufacturer shall

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recommend material and specify the area to be switches, rated for either 150 psig (1034 KPa) insulated. or 250 psig (1724 KPa), shall be factory

supplied for field installation when specified on K. Sound Level the equipment schedule.

The overall sound pressure level of the chiller 7. Steam Valve:shall not exceed 80 dbA measured per ARI An electronic steam shall be provided when Standard 575 (latest edition). specified on the equipment schedule.

L. Start-up:

1. Unit manufacturer shall provide a factory-trained service representative, employed by the chiller manufacturer, to perform and/or supervise chiller pressure test (when required), charge chiller with refrigerant (water) and lithium bromide solution, place unit into operation and calibrate all controls in accordance with the manufacturer's written startup, operating, and maintenance instructions.

2. After unit start-up has been performed, the same factory representative shall be available for a period of instruction not to exceed 4 hours to instruct the owner's personnel in the proper start-up, operating, and maintenance procedures.

3. Manufacturer shall provide the following literature:a. installation Instructionsb. Start-up, operating and Maintenance instructionsc. Field Wiring Digarms

M. Options and Accessories:

1. High-Pressure Waterboxes:Waterboxes rated for 250 psig (1725 Kpa) working pressure shall be furnished when specified on the equipment schedule.

2. Hot Water Generator:A generator designed, built, and in accordance with ASME Sections VIII, Division 1 reqiurements with a design working pressure of 250 psig (1725 Kpa) shall be furnished for hot water applications when specified on the equipment schedule.

3. Absorber-Condenser Crossover Piping:Crossover piping connecting the absorber to the condenser shall be furnished when specified on the equipment schedule.

4. Shipping Configuration:ANSI 150 psig (1034 KPa) RF (raised face) flanges shall be furnished on all waterbox nozzle connections when specified on the equipment schedule.

6. Chilled and condenser Water Flow Switches:Chilled water and condenser water flow

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Hermetic Absorption Liquid Chillers - خانه · PDF file15 standard models for high-capacity...

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Transcript of Hermetic Absorption Liquid Chillers - خانه · PDF file15 standard models for high-capacity...