Optimizing Air-Conditioner ..

Optimizing Air-Conditioner EER SEER Efficiencies - Optimizing Evaporator Input Condenser Output BTUH HeatLoad, EER, SEER, Ratings Condenser Temp-Splits Knowing Operating Static Pressures | RM T-stat Differential | R410a_Evacuation | Selecting Correct CFM Fan Speeds | Gurgling sounds at TEV | Oil Furnace blower Graph Design Engineering | Determining which metering device TXV or Fixed Orifice | 50% Load HomeAir Leaks There are dozens of other things you can do to decrease the heatload & increase A/C efficiencies reducing cooling costs! | Cynergy Home HVAC Energy Raters Listen While Reading! A/C Trouble shooting link - at bottom Aff ordable Test Instrum ent You Need |* Sizing Units to Adequate Airflow |* CONDENSING TEMP DIAGNOSIS California Research Report on EER SEER pdf - download 07/23/08, SEER Payback - cannot be accurately represented! - with Darrell Udelhoven - HVAC RETIRED - udarrell "Establishing the 'proper heatload' on the evaporator coil" First, before doing anything else check and thoroughly seal all the ductwork! For efficient operation, always check the return air temperature at the bl ower & at the Retu rn Air Grille(s ) INTRODUCTION TO TOTAL COOLING PERFORMANCE; How improper installation of a 3-ton system can become a 1.5-ton system of actual delivered cooling, or heat transfer to the outdoors! (SURPRISE!) The second thing you must do & know "before charging any system" is to establish the proper airflow and heatload through the evaporator coil. It is impossible to accurately charge a Cap-Tube, Piston-Flow-Rator, or (TXV) Thermostatic Expansion Valve refrigerant fed evaporator coil, without "an adequate an ev enly distributed heat -load passing through all the coil's circuits." Some liquid refrig erant must be suppl ied throughout th e total length of the evaporator coils along with an adequate heat-load to v apori ze it in order to achieve the coils f ull BTU /hr capac ity. If an insu ff ici ent heat-load is supplied a TXV will shut down the flow of refrigerant, a Piston-Flow-Rator will tend to overload the coil with liquid, with the p otential of compres sor slugg ing . retweet 2 tweets You must know & record the operating feet per minute (FPM) velo city & the CFM to each room & the Total CFM airflow! You know the scenario: an oversized unit and high humidity with room TH set at 68 or 70-F degrees (clammy cold) too large a piston metering device matched to a 48,000-BTU/hr evaporator coil, --only heat evaporation/absorbing 26,000-btu/hr. (Check the co ndenser Temp/split.) ========================== Air Conditioning Performance Diagnosis using listed (CT) Condensing Temperatures Using Goodman 16-SEER "Expanded Performance Data" Find the correct (CT) Condensing Temperature with the following known mfg’ers data. Outdoor Ambient Temp (OAT) 85-F; IDB 75-F; IWB 63-F or 50%-RH. Listed pressure is 316-psig, or 99-F CT; that is 99-F -85-F is a 14-F SPLIT. The delta T or temp-split should be within a 10-psig range or, +/- 2-F degrees; 97 or 101-F. The mfg’ers Supply Outlet should be able to provide Contractors & Techs with those performance data charts. Goodman has their “Expanded Performance Data” on the Internet. BTUH = CFM X enthalpy difference from Chart X 4.5 <-Click Optim izing Air-Conditione r EER SEER Efficiencies Optimizing Evapor... htt p:// www.udarrell.com/air-conditionin g-eff iciency-btu hr-evaporator-c... 1 of 17 10/7/2009 12:46 PM

Optimizing Air-Conditioner ..

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