Re: [EnergyPlus_Support] Converting DOE-2 Chiller curves to EnergyPlus

[Zhen Tian <tianzhen9@xxxxxxxxx>]

Thanks a lot Linda.

I got an error when try to run the example file .coi file using the CoeffConv utility through EP Launch. The message I got is "Temporary batch file could not be created for utility:CoeffConv.

I run it on a Vista platform. Even I set the .exe and .bat files as  XP compatible and run as administrator, the program still does not run.

Do you know what could be the problem?

Thank you very much.

Regards,

David

--- On Thu, 9/10/09, Linda Lawrie <linda@xxxxxxxxxxxxxx> wrote:

From: Linda Lawrie <linda@xxxxxxxxxxxxxx>
Subject: Re: [EnergyPlus_Support] Converting DOE-2 Chiller curves to EnergyPlus
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Date: Thursday, September 10, 2009, 8:57 PM

 

Did you look at the CoeffConv utility?

"A program to convert DOE-2 temperature dependent curves in Fahrenheit to EnergyPlus curves in Centigrade. The program converts the DOE-2 coefficients of biquadratic curve to the eqivalent EPlus biquadratic curve coefficients".

Available on the Utilities menu of EP-Launch and described in the AuxiliaryPrograms document.

At 09:16 PM 9/9/2009, Zhen Tian wrote:

I have question regarding converting the DOE-2 electric chiller curves to EnergyPlus Chiller:Electric: EIR curves.

For the part load ratio curve, as it is a quadratic performace curve with only one variable, it is easy to convert from DOE-2 curve to EneryPlus curve.

The problem is in the other two curves: cooling capacity function of temperature curve and electric input to cooling output ratio function of temperature curve. These two are biquadratic curves with two variables and also need to convert the degree F in DOE-2 to degree C in EnergyPlus at the same time. I am wondering is there any easy way to convert these DOE-2 curves to EnergyPlus curves? Is it possible to convert within tools such as Excel?

Thank you. Any advice will be appreciated.

Regards,

David

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