Heat Interface Units
COMMUNAL HEATING SCHEMESSolutions for
with
inside
• OneHIUfitsall(5-70kW)–usingspecializedcontrolvalves• Upgradefacilitieswithsimpleinterchangeableunits• Intelligentcontrollersgiveefficientprimarycontrolandplatepre-heatforfasterresponse.• EsbeTMVforenhancedDHWusercomfort• Qualitybrands–Grundfos,ESBE,SWEP• Designedforeasymaintenance• Fullyinsulated• Nogassupplyrequiredtoindividualapartments• Reducedinstallationandlifecyclecosts• Lowermaintenance• Greaterenergyefficiency
A primary consideration in modern construction is increased energy efficiency, user comfort and energy billing – particularly in multi-dwelling buildings.
As a result Centralised District Heating schemes, supplied by a combination of traditional and renewable energy sources, are becoming widely accepted as the industry norm for new build developments.
ESBE Controlled Heat Interface Units give Consultants and Engineers a reliable solution which provide eco-friendly, efficient temperature control whilst achieving high energy efficiency and user comfort.
Essco Controls offer Heat Interface Units (HIUs) for a variety of applications – whether for single or multi-dwelling houses, apartments, industrial, commercial or within district heating systems.
The HIU unit provides a single point of control which delivers improved efficiency and reduced effective running costs. These compact units are designed to fit in very small spaces, with minimal installation and running costs. Systems can be fitted with wireless control and weather compensating modulation providing additional control.
What is a Heat Interface Unit?
Leisure
Commercial
Domestic
Industrial
Benefits of ESBE Controlled HIUs include:
D O M E S T I C C O M M E R C I A L L E I S U R E I N D U S T R I A L
with
inside
Heat Interface Units (HIUs) provide the complete solution for your heating and hot water on a heat network.
Cost efficient solutions for multi-dwelling developments
HIU
HIU
HIU
HIU
THE ENERGY CENTRE
HIU HIU
Typical multi-dwelling development
Leisure
Commercial
Domestic
Industrial
The energy centre provides one heat source for all individual apartments and flats which reduces energy costs and the carbon footprint.
• Accurateconsumptionandrunningcostsareprovided
•Annualservicingcostsreducedsignificantly
•Reducedgasconsumption
•InstantaneousDHWisachievedusing temperatureregulation
•Additionalwirelesscontrol optionsavailable
with
inside
I N D I R E C T T W I N H I UESS-TWIN
Options
HydronicseparationbetweenprimaryandsecondarysystemInstantaneousHeatingandDHWfromplateheatexchangers12lexpansionvesselElectronicandthermostaticcontrolofDHW–HighFlowratesDifferentialpressurecontrolasstandardCopperbrazedAISI316stainlesssteelplateheatexchanger doesnotrequiremaintenance.AISI316stainlesssteelpipingpreventsanycorrosion.Easytoinstallandoperate.Uniquecombinationoffastactinghighflowelectroniccontrol ofDHWwithsecondaryTMVtogivestabletemperatureoutput
FirstFixRailcompletewithBypassMBUSHeatMeterMBUSWaterMeterRangeofHeatingcontrollersallowingWeather Compensation,WirelessRoomstatandIndoorsensors.
SpecificationHeat transfer capacityMax working pressure primaryMax working pressure secondary(heating)Min working pressure DHWMax working temperatureConnections
5-70kW10 Bar3 Bar2 Bar95°C¾” BSP Insulated Pipe
Indirect Twin HIU
✆ +44 (0) 1489 779068✉ [email protected]
A Central Heating SupplyB Central Heating ReturnC Domestic Cold Water InletD Domestic Cold Water OutletE Domestic Hot WaterF Space Heating SupplyG Space Heating Return
Hydronic Scheme
C O N T R O L S
ESSCOESSCO
No Components1A Heat Exhanger (DHW)1B Heat Exchanger (Heating)5 Differential Pressure Controller7 5 Way Distributor + Strainer8 Water Meter9 Heat Meter20 Heating Circulation Pump21 Check Valve23 Safety Valve24 Strainer25 Expansion Tank34A CRS Controller34B CRA ControllerPG Pressure GaugePS Pressure Switch10 Mixing Valve
I N D I R E C T S I N G L E H I UESS-SINGLE
Indirect Single HIU
34B
9
25
24
23
5PS
20
1B
21
PG
NO Components1B Heat Exhanger(Heating)5 Differential Pressure Control Valve9 Heat Meter 20 Heating Circulation Pump21 Check Valve23 Safety Valve24 Strainer25 Expansion Tank34B CRA Controller PG Pressure GaugePS Pressure Switch
D
E
F
C
1 2 3 4
B
A
321 5
C
D
4 6 7 8
A
B
SHEET 2 OF 4SCALE:1:10
Project NameF.BERK
DateNameM.AKSU
Appv'd
Sgn
ABFG
Chk'd M.AKSU15.07.2016
Central Heating SupplyCentral Heating ReturnSpace Heating SupplySpace Heating Return
REV No:
Proje No.Cap.
Drawn
150701-02 150701-02
Rev:015.07.201615.07.2016
150701-02
Options
HydronicseparationbetweenprimaryandsecondarysystemInstantaneousHeatingfromplateheatexchangers12lexpansionvesselElectroniccontrol–HighFlowratesDifferentialpressurecontrolasstandardCopperbrazedAISI316stainlesssteelheatexchanger doesnotrequiremaintenance.AISI316stainlesssteelpipingpreventsanycorrosion.Easytoinstallandoperate.
FirstFixRailcompletewithBypassMBUSHeatMeterMBUSWaterMeterRangeofHeatingcontrollersallowingWeather Compensation,WirelessRoomstatandIndoorsensors.
SpecificationHeat transfer capacityMax working pressure primaryMax working pressure secondary(heating)Max working temperatureConnections
60kW10 Bar3 Bar95°C¾” BSP Insulated Pipe
D O M E S T I C C O M M E R C I A L L E I S U R E I N D U S T R I A L
✆ +44 (0) 1489 779068✉ [email protected]
İ İ İ
ı İ
5
ExpansionTank
FG
23
20
1B25
AB
1B.Heat Exchanger(Heating)5.Differential Pressure Controller
12.Thermal Actuator
23.Safety Valve
20.Heating Circulation Pump
25.Expansion
OEM2
9
9.Heat Meter
T
21.Check Valve
24
24.Strainer
M
34B
PS
24
34B.CRA ControllerPG.Pressure GaugePS.Pressure Sensor
20150701-02
C O N T R O L S
ESSCOESSCO
Hydronic Scheme
A Central Heating SupplyB Central Heating ReturnF Space Heating SupplyG Space Heating Return
No Components1B Heat Exhanger (Heating)5 Differential Pressure Control Valve9 Heat Meter20 Heating Circulation Pump21 Check Valve23 Safety Valve24 Strainer25 Expansion Tank34B CRA ControllerPG Pressure GaugePS Pressure Switch
I N D I R E C T H E A T I N G W I T H D H W C Y L I N D E RESS-CYLINDER
Indirect Heating - Direct DHW to Cylinder
Options
HydronicseparationbetweenprimaryandsecondarysystemInstantaneousHeatingCylinderteeoffafterheatmeterallowingaccuratebillingof DHWinretrofitapplicationsorwhenbuffertanksareinstalled12lexpansionvesselRangeofinterchangeableControllersforHeatingDifferentialpressurecontrolasstandardCopperbrazedAISI316stainlesssteelplateheatexchanger doesnotrequiremaintenance.AISI316stainlesssteelpipingpreventsanycorrosion.Easytoinstallandoperate
FirstFixRailcompletewithBypassMBUSHeatMeterMBUSWaterMeterRangeofHeatingcontrollersallowingWeather Compensation,WirelessRoomstatandIndoorsensors.
SpecificationHeat transfer capacityMax working pressure primaryMax working pressure secondary(heating)Min working pressure DHWMax working temperatureConnections
60kW10 Bar3 Bar2 Bar95°C¾” BSP Insulated Pipe
D O M E S T I C C O M M E R C I A L L E I S U R E I N D U S T R I A L
No Components1B Heat Exhanger (Heating)4 Zone Valve9 Heat Meter20 Heating Circulation Pump21 Check Valve23 Safety Valve24 Strainer25 Expansion Tank34B CRA ControllerPG Pressure GaugePS Pressure Sensor
C O N T R O L S
ESSCOESSCO
Hydronic Scheme
✆ +44 (0) 1489 779068✉ [email protected]
A Central Heating SupplyB Central Heating ReturnC DHW Cylinder SupplyD DHW Cylinder ReturnF Space Heating SupplyG Space Heating Return
I N D I R E C T D H W W I T H D I R E C T H E A T I N GESS-DIRECT
Indirect DHW - Direct Heating
Options
HydronicseparationbetweenprimaryandsecondarysystemInstantaneousHeatingdirectlyfromtheprimarysupply allowinggreaterenergysavingsandefficiencyIdealfornewbuildapplicationsRangeofinterchangeableControllersforHeatingDifferentialpressurecontrolasstandardCopperbrazedISI316stainlesssteelplateheat exchangerdoesnotrequiremaintenance.AISI316stainlesssteelpipingpreventsanycorrosion.Easytoinstallandoperate
FirstFixRailcompletewithBypassMBUSHeatMeterMBUSWaterMeterRangeofHeatingcontrollersallowingWeather Compensation,WirelessRoomstatandIndoorsensors.
SpecificationHeat transfer capacityMax working pressure primaryMax working pressure secondary(heating)Min working pressure DHWMax working temperatureConnections
5-70kW10 Bar3 Bar2 Bar95°C¾” BSP Insulated Pipe
D O M E S T I C C O M M E R C I A L L E I S U R E I N D U S T R I A L
No Components1A Heat Exchanger (DHW)8 Water Meter-Optıonal9 Heat Meter5 Differential Pressure24 Strainer34A CRS Controller34B CRA ControllerAV Air Vent10 Mixing Valve
C O N T R O L S
ESSCOESSCO
Hydronic Scheme
A Central Heating SupplyB Central Heating ReturnC Domestic Cold Water InletD Domestic Cold Water OutletE Domestic Hot WaterF Space Heating SupplyG Space Heating Return
✆ +44 (0) 1489 779068✉ [email protected]
C O M P O N E N T SSmart Systems
D O M E S T I C C O M M E R C I A L L E I S U R E I N D U S T R I A L
VRG122 2 way Rotary shoe valve
CRS115 – Temperature Controller with pocket sensor
CRA115 – Temperature Controller
Grundfos UPM 3 Pump
CRC115 – Temperature Controller with Weather compensation
ManufacturedfromDZRBrassforlonglastingandhighdurability.Lowestinternalleakagerateonthemarket(<0.05%).Progressiveregulatingcharacteristictogivefullcontrolthroughoutopeningstroke.Customizedcoatedsleeveforhighendurance.ClosecouplingwithEsbeactuatorforaccurateproportionalcontrol
SeriesCRS110isaconstantflowtemperaturecontrollerforapplicationswhereaconstantwatertemperatureisrequired.Temperaturesettingisdonebyaneasy-to-usejoystickanddisplayinterface.ThecompactcontrollerisdesignedforoperatingrotaryvalvesDN15-50andhasanoperatingrangeof90°.Theseriescaneasilybemanuallyoperatedbythepull-and-turnknobonthefrontofthecover.TheCRShasapocketwithaninsertedtemperaturesensorwithaquicktemperatureresponsetosuitpotablewaterapplications.Theactuatorprogrammingcanbealteredtogivefasterresponsetimesfortemperaturevariations.
SeriesCRA110isaconstantflowtemperaturecontrollerforapplicationswhereaconstantwatertemperatureisrequired.Temperaturesettingsisdonebyaneasy-to-usejoystickanddisplayinterface.ThecompactcontrollerisdesignedforoperatingrotaryvalvesDN15-50andhasanoperatingrangeof90°.Theseriescaneasilybemanuallyoperatedbythepull-and-turnknobonthefrontofthecover. Aspeed-controlled,high-efficiencypumpwithinternalcontrolsin
constantpressure,proportionalpressureorconstantspeedmodesdefinedbythemeansofasmartuserinterface.TheUPM3AUTOisforallapplicationsinwhichaninternallycontrolledpumpisneeded.Itisdesignedtobeusedinappliancesorcabinetswithincreasedambienttemperaturesandlimitedspaceoptions;eitherinstandaloneapplicationsorinkitsystemswithoutPWMcontroller.
SeriesCRC110isanoutdoorsensorbasedcontrollerwithintegratedactuatorforuseonmixingvalveslikeVRG122andVRB140.Thecontrollerisdesignedtoprovideahighlevelofcomfortthankstothepossibilitytosetaperfectcharacteristicheatingcurveandatthesametimeprovideenergysavingsforthehouseowner.Theregulationisbasedonoutdoorsensorfeedbackandanadjustablecharacteristicheatingcurve.Anoffset/paralleladjustmentofthecharacteristicheatingcurvemaybeactivatedbyanexternalsignalforexamplenightsettings.Forapplicationswithwellinsulatedbuildingandquickheatingsystemssuchasradiatorcircuitsatemperaturefiltercanbeactivatedtodelayanoutdoortemperaturechangetoavoidanimbalancebetweenestimatedandactualheatingdemand.
HeatMetersareusedtomeasurethedistributionofheatenergyinheatingcontrolsystemsbycalculatingthevolumeandtemperaturedifferentialofcirculatedwaterandcomplywithrequirementsstipulatedinOIMLR75,MID,EN1434standards.TheHeatMeterusedinourHIUshasMBUSfeedbackallowingremoterecordingofenergyusageviaEthernetforbillingpurposes.
Heatmeter
with
inside
with
inside
with
inside
with
inside
with
inside
Instantaneous Hot Water
Heating
C A L C U L A T I O N G U I D ETechnical
C O N T R O L S
ESSCOESSCO
CRS115 – Temperature Controller with pocket sensor
Grundfos UPM 3 Pump
Heatmeter
Output Rating
Primary Delta T
Primary Pressure Drop
Primary Flow Rate
SecondaryFlow Rate
Secondary Pressure Drop
SecondaryDelta T
Kw5
1015202030304040405060
°C151520202020202030303030
°C101015152015202020303030
kPa0.4631.862.354.23.99.49.4
16.67.47.411.616.7
kPa0.5462.182.183.92.28.84.98.88.83.96.18.8
l/m4.779.53
10.7214.314.321.521.528.619.119.123.828.6
l/m7.1514.314.319.014.328.621.528.628.619.123.828.6
Output Rating
Primary Delta T
Primary Pressure Drop
Primary Flow Rate
DHW SecondaryFlow Rate
Secondary Pressure Drop
SecondaryDelta T
Kw3040506070
°C33 (55/22)38 (60/22)48 (70/22)48 (70/22)53 (75/22)
°C35 (10/45)35 (10/45)35 (10/45)35 (10/45)35 (10/45)
kPa3.85.15.07.18.0
kPa2.74.77.8
10.714.5
l/m13.015.014.917.918.9
l/m12.316.320.424.528.6
✆ +44 (0) 1489 779068✉ [email protected] Factor
D O M E S T I C C O M M E R C I A L L E I S U R E I N D U S T R I A L
Typical Diversity Factors
Thedegreeofdiversityformultipledwellingsisexpressedasa“coincidencefactor”andisdefinedas:F = DFR / MFRWhere: F=coincidenceordiversityfactor DFR=designflowrateforhotwateroutlets(l/s) MFR=maximumpossibleflowrateforhotwateroutlets(l/s)
Number of HIUs
Number of HIUsDiversity Diversity
123456789
101112131415161718192021222324252627282930313233
343536373839404142434445464748495051525354555657585960616263646566
10.61940.47650.39880.34900.31390.28760.26700.25040.23660.22500.21510.20640.19880.19200.18600.18050.17560.17100.16700.16310.15960.15630.15330.15040.14780.14530.14290.14070.13860.13660.13470.1329
0.13120.12960.12800.12650.12510.12380.12240.12120.12000.11880.11770.11660.11560.11480.11360.11270.11180.11090.11000.10920.10840.10760.10690.10610.10540.10470.10400.10340.10270.10210.10150.10090.1003
Number of HIUs Diversity
676869707172737475767778798081828384858687888990919293949596979899
0.09980.09920.09870.09810.09760.09710.09660.09610.09560.09520.09460.09420.09390.09340.09300.09260.09220.09180.09140.09100.09070.09030.08990.08960.08920.08890.08860.08820.08790.08760.08720.08700.0867
C O N T R O L S
ESSCOESSCO
Boiler or Heat Source
HIUHIUHIU HIU HIU HIU
HIUHIUHIU HIU HIU HIU
HIUHIUHIU HIU HIU HIU
0.288 l/s 0.411 l/s 0.524 l/s
0.288 l/s 0.411 l/s 0.524 l/s
0.836 l/s
1.416 l/s
1.970 l/s
0.288 l/s 0.411 l/s 0.524 l/s
0.524 l/s 0.411 l/s 0.288 l/s
0.524 l/s 0.411 l/s 0.288 l/s
0.524 l/s 0.411 l/s 0.288 l/s
Total flow rate without diversity = 2.592 l/sTotal flow rate with diversity = 1.970 l/s
Effect of Diversity Factors
Thesimplesystembelowillustratestheeffectsfordiversity.Itassumesthateachapartmentisidenticalwiththefollowing:-
Heat load 3 kWDHW load 50 kWHeating ∆T 10 °CDHW primary ∆T 55 °C
C O N T R O L S
ESSCOESSCO www.esscocontrols.co.uk
Heat Interface Unit
HIU Planning List
✆ +44 (0) 1489 779068✉ [email protected]
Flow Rate Calculation Sizing the Central Boiler PlantUsingthediversityfactorfromthechart,themaximumdesignflowrateforeachsectionofheatingpipecanbedetermined.Theflowratethrougheachpipemustbecapableofdeliveringthepeakheatingdemandfortheapartmentbeingservedplusthepeaksimultaneousdiversifieddemandfordomestichotwater. Qτ=(F*QHW)+(QHTG)WhereF=coincidenceordiversityfactorQT =totaldesignflowrate-l/sQHW =waterflowratetomeetpeakdomestichotwater demand-l/sQHTG =Waterflowraterequiredtomeetpeakspace heatingdemand-l/sThequantityofhotwatertoheatthedomestichotwaterQHWcanbecalculatedfromtheequation: QDHW=PHW
4.2*∆TDH
WherePHW =energyrequiredinkWforallHIUdomestichotwater∆TDH =designtemperaturedropacrossthecentralboilerplant sideoftheheatexchangerduringhotwaterproduction -typically50°C-75°Cflow,25°Creturn.4.2 =specificheatfactor-kJ/kg°KThequantityofhotwaterforspaceheatingQHTGcanbecalculatedfromtheequation: QDHW=PHTG
4.2*∆THTG
WherePHTG =energyrequiredinkWforallapartments -typically3to10kWeach∆THTG =designtemperaturedropacrossthecentralboiler plantside-typically30°C-75°Cflow,45°Creturn.
Buffertankprovidesathermalstoretoenablethesystemtosupplyalargeamountenergyforashortperiod.Thebuffertankcoolsduringpeakdemandandreturnstothedesigntemperaturewhenthepeakdemandhaspassed.ThecentralboilerplantcanthereforebesizedtomeetthetotalheatingloadPHTGplusanadditionalallowancetore-heatthebuffertankwithinonehourPBUFFER.TheESS-Cylinderwithastoragecylinderineachapartmentactsinasimilarmannerasabuffervesselforthedomestichotwaterdealingwithpeakdemandandreheatingwithinshorttimeperiod.Abuffervesselshouldstillbeinstalledaspartofthecentralisedplanttodealwithpeakdemandforenergyaspreviouslydescribed.
EnergyRequiredtoHeatBufferVesselThequantityofhotwatertoheatthecontentsofthebuffervesselwithinonehourcanbecalculatedfromtheequation: PBUFFER=V*4.2*∆TDH
3,600WhereV =volumeofbuffervessel-litreForadurationlessthanonehoursubstitutethenumberofsecondsfor3,600.
BufferVesselSizingThebuffervesselshouldbesizedtodealwithpeakheatingandhotwaterdemandsustainedoveraperiodof10minutes=600seconds.Assumingtheboilerplantiscontrolledtomaintaintherequiredheatingflowtemperatureatapointtwothirdsofthewaydownthevesselthentherequiredenergyflowintothevesselwillbefor900seconds. V=900*F*QHW
WhereV =volumeofbuffervessel-litre
Pleasecompletethetablebelow,togetherwithanyfurtheradditionalinformation.
Domestic Hot water specificationDHW Temperature requirementsDHW flow rate requirementsCentral Heating SpecificationHeating LOAD (Kw)Heating flow design temperaturePrimary (District) specificationPRIMARY (District) Flow temperaturePRIMARY (District) Return temperaturePressure Drop across the Primary Flow and returnCold waterCold water (inlet) design temperatureCold water (inlet) design pressureAdditional Specification
Required Value submitted by the System Design House
Required Value submitted by the System Design House
Required Value submitted by the System Design House
Required Value submitted by the System Design House
Required Value submitted by the System Design House
Actual confirmed
Actual confirmed
Top Related