LEED Commercial Refrigeration Modeling
Has anyone modeled savings against the LEED Retail appendix to show savings for commercial refrigeration and kitchen equipment? I'm not having any success getting performance data from the rep or manufacturer. We are using water-cooled refrigeration. We know it is more efficient than the air-cooled, but I can't find any resources or performance to model to substantiate how much.
I know there is the old eQuest refrigeration module, but I don't think it can model systems using the new refrigerants. Does anyone have any other suggestions?
You can use energyplus for the new refrigerants and for the modeling in general. In case you refer to CO2 as a new refrigerant it is in the database, otherwise you have to manually insert the refrigerant's properties. However, there is still the issue with the missing performance data
Can you please provide a little more detail? Are the refrigerated cases stand-alone or is it a multiplex rack system? I think this is doable. Most of the inputs (lighting, defrost, anti-sweat power) for the
Refrigeration:Caseobject are available from manufacturer's cut sheets on the web. Compressor data might be a little harder, but there is a large dataset shipped with EnergyPlus that could be used. Then you could simulate incremental savings for an air-cooled condenser versus a water-cooled condenser.