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Does anyone know of a way to make part load operation work
in Type668? The performance maps are based on entering conditions on the
evaporator and condenser side. However, there is no direct way to make type668
run at 10%, 50%, etc. The work around I have used in the past is dividing the
performance map by 50% to reflect two stages of operation and so on. Then
setting up valves and controls to route the flow correctly. The HP I am modeling has a 10:1 turn down ratio and I don’t
want to make 10 heat pumps each with 10% of the total capacity of a single
unit. Please advise, Fred
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