Air to air chiller with condenser working with return indoor air

asked 2019-07-08 08:05:12 -0500

Priarone's avatar

updated 2020-01-20 12:02:41 -0500

Good morning everyboby! I have a question about how to model in Open Studio a reversible heat pump that use “return air” as “external source”. As an example, I consider summer operating mode (chiller mode). I have for my chiller (Clivet Zefir 3) the following situation: the inlet air in the evaporator (useful effect coil) is air at external summer conditions (no recirculation at all) whereas the inlet air in the condenser is the return air coming from the conditioned space (comfort conditions setpoint, in Italy 26°C). My problem is how to set these conditions at the inlet of the condenser in Open Studio. I select in Open Studio the “OS:Coil:Cooilg:DX:Single Speed” model and I try to work on the “Condenser Air Inlet Node Name” to set its temperature equal to the “return air” condition. In particular, I want to create a “OutdoorAir:Node” object to set properly its temperature but I can’t find it in OpenStudio. Is this the correct manner to operate? Have you any particular suggestions? Thank you so much for the help!!!!

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