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RE: [EnergyPlus_Support] Is there any way to simplify DX Unit Model?
Dear Ke,
Consider using the curves from an example file that is similar to your project. They are reasonable representation of many coils.
Also, on the Help Desk Web site in the Downloads section (<http://energyplus.helpserve.com/index.php?_m=downloads&_a=view>http://energyplus.helpserve.com/index.php?_m=downloads&_a=view), you will find a helpful Excel spreadsheet for creating bi-quadratic curves called ?Creating a BQuadraticCurve using LINEST?.
The Building Performance Team
James V. Dirkes II, P.E., BEMP , LEED AP
1631 Acacia Drive NW
Grand Rapids, MI 49504
616 450 8653
From: EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of Ke Xu
Sent: Monday, April 02, 2012 11:16 AM
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: [EnergyPlus_Support] Is there any way to simplify DX Unit Model?
Dear all,
Since a single-speed DX coil model stated in E+ engineering reference involves 5 curves (TotCapTempModFac, EIRTempModFac,EIRFlowModFac,PartLoadFrac,ect.), which requires over 20 constant parameters as inputs, but in my case, it is almost impossible to obtain all curves from the manufacture,I am wondering if there is a way that I can avoid all those curves input? or put it in other words, is there a simpler DX model built in E+? for example, a curve directly correlate coil part load ratio to the energy use ratio? and if E+ does allow users to develop such a curve, where can I define it?
Thanks in advance.
Ke
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