You do not have to care about those curves, if you are interested only in the heat transfer properties.
Keep the PLR values and coil temperature, or what ever the parameters are used in those curves.
When you really need to covert the heat transfer property to electrical power, then you would need the conversion.
A constant COP and PLR will give you a first approximation to the conversion process.
If you are working with LEED certification then you would need al those curves.
When you wanted to buy a window air-coditioner, look for the best COP and PLR=0.5. You know it may be less efficient at other PLR values, but who is really to care.
Dr. Li
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
From: xukevin24@xxxxxxxxx
Date: Mon, 2 Apr 2012 15:15:31 +0000
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
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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