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[EnergyPlus_Support] Curves for DX unit in heating mode
- To: EnergyPlus_Support@xxxxxxxxxxxxxxx
- Subject: [EnergyPlus_Support] Curves for DX unit in heating mode
- From: "fdmfernando" <fdmfernando@xxxxxxxx>
- Date: Thu, 23 May 2013 11:20:13 -0000
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- Delivery-date: Thu, 23 May 2013 05:20:15 -0600
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Dear members of the E+ team:
I am modeling a small DX unit with variable speed compressor. I found a fair set of curves for cooling mode in the program's data set (file PerfCurves.idf). However, I still need typical curves for heating mode, so I wonder if anybody can provide them or tell me where to search.
My second question concerns the DX model implemented in E+. As far as I know, this model does not consider that the EER changes with the speed of the compressor (EER normally increases as the compressor frequency decreases, reaches a maximum at about 60Hz and then decreases between 60Hz and 30Hz). Am I right? Is there some way to include this effect into the simulation? Is there some typical curve to model how EER changes with the speed ratio?
Best regards,
Fernando Dominguez
University of Malaga (Spain)
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