Modeling an inverter based AC as a VRF

energyplus
vrf
air-conditioner
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I modeled the inverter based AC as a VRF, but the simulated VRF energy consumption values are much higher than measured values of the inverter based AC. I tried changing the partload ratio curve coefficients because the load in the room is very small. It did not work. any suggestions?

hk65

asked 2024-03-20 02:37:29 -0500

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Aaron Boranian

updated 2024-03-20 15:26:45 -0500

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Probably should be using cycling fan mode and also check the cooling EIRfPLR curve to make sure it represents the VS compressor energy. VRF will use a different curve. See figure 10 in https://www.fsec.ucf.edu/en/publicati.... The VS AC EIRfPLR curve will go lower than the one shown in the figure (blue line) and cross at 0,0.