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chiller performance curves [closed]

asked 2017-02-12 06:48:11 -0500

Tohagit gravatar image

Hello I am trying to model a screw chiller - working in designbuilder. the data I have from the manufacturer is part load, so, according to desighbuilder help file, I generated EIRFPLR using the data i got (using the chiller_performancecurve_coefficients.xls) for EIRFT and CAPFT I used 1 for the first coefficient and 0 for the others. (according to https://www.designbuilder.co.uk/helpv5. ... ht=chiller) the simulation keeps crashing, and the message I get is: (INTEL EIRFPLR is my generated curve)

Severe * GetElecReformEIRChillerInput: Chiller:Electric:ReformulatedEIR="CHILLER 1" * ~~~ ** Invalid Electric Input to Cooling Output Ratio Function of Part Load Ratio Curve Name=INTEL EIRFPLR for Electric Input to Cooling Output Ratio Function of Part Load Ratio Curve Type=LEAVINGCONDENSERWATERTEMPERATURE

Any advices?

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Closed for the following reason the question is answered, right answer was accepted by Tohagit
close date 2017-02-14 01:23:57.057697

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Did you use °C to generate the curve?

Adam Hilton gravatar image Adam Hilton  ( 2017-02-13 08:43:39 -0500 )edit

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answered 2017-02-13 09:42:13 -0500

The last part of the message says the curve type is LeavingCondenserWaterTemperature. For this choice, the valid curve type is a bicubic curve object. What type of curve object did you use?

Curve:Bicubic,
  ReformEIRChiller Carrier 19XR 1259kW/6.26COP/Vanes EIRFPLR,  !- Name
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I fixed the water temperatures - that was the problem.

Tohagit gravatar image Tohagit  ( 2017-02-14 01:22:59 -0500 )edit

 

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Asked: 2017-02-12 06:48:11 -0500

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Last updated: Feb 13 '17