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Re: [EnergyPlus_Support] Condensing boiler curve question [1 Attachment]
I found the spreadsheet used to create that performance curve. Use
Entering water temperature. Note cells BJ12 - BJ119 use 30C and 60C as
the return water temperature to yield the regression coefficients in
AX112-AX117 which match the Boilers.idf performance curve.
On 2/9/2017 10:43 AM, Chris Jones cj@xxxxxxxxxxx [EnergyPlus_Support] wrote:
> The EnergyPlus installation includes the Boilers.idf file in the
> Datasets directory. This file includes a Biquadratic, condensing
> boiler curve. What isnâ??t clear is if this curve is based on the boiler
> Entering or Leaving temperature.
>
> The reference for this curve is from Viessmann and all the Viessmann
> condensing boiler literature I have reviewed states the boiler
> efficiency is dependent on system heating water return temperature.
>
> Should I specify Entering or Leaving when using this curve?
>
> Thanks for your assistance!
--
Richard Raustad
Florida Solar Energy Center
1679 Clearlake Road
Cocoa, FL 32922
Ph: (321)638-1454
http://www.fsec.ucf.edu/en/
Program Director
Electric Vehicle Transportation Center
http://evtc.fsec.ucf.edu/
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Posted by: Richard Raustad <rraustad@xxxxxxxxxxxx>
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Attachment not found:
D:\Eudora\Attach\CondensingBoilerCurveFit.jpg