[Bldg-sim] DX Cooling EIR Ratio Curve

[eric wang]

Jonathan and Glenn,
 
Thanks a lot for your replies. However, the values I calculated by using return or mixing air wet bulb temperatures are still different to the number listed in the hourly report. 
 
Thanks
 
Shaojie


--- On Fri, 2/13/09, Glenn Haynes <glenn.haynes at rlw.com> wrote:

From: Glenn Haynes <glenn.haynes at rlw.com>
Subject: RE: [Bldg-sim] DX Cooling EIR Ratio Curve
To: shaojieworld2006 at yahoo.com
Date: Friday, February 13, 2009, 3:08 PM








The wet bulb temperature refers to that entering the evaporator, which is the return air wet bulb temperature.
 




From: bldg-sim-bounces at lists.onebuilding.org [mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of eric wang
Sent: Friday, February 13, 2009 1:48 PM
To: bldg-sim at lists.onebuilding.org
Subject: [Bldg-sim] DX Cooling EIR Ratio Curve
 





Hi,

 

I used the default DX Cooling EIR Ratio Curve (DX-Cool-Cap-fEWB&OAT) in eQUEST. The variables are t entering wetbulb and t enter condenser. I assume these refer to outside air wet and dry bulb temperatures. After exporting outside air wet and dry bulb temperatures in hourly report, the value of "Temp correction to COOLING-EIR" I calculated is different to the one in the hourly report by using the curve coefficients. Can anyone point out if my understanding is correct?

 

Thanks a lot for your help

 

Shaojie
 


      
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