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Modeling an inverter based AC as a VRF

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

hk65
11 ●1

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

Aaron Boranian

13830 ●76 ●24 http://bigladdersoftware.com/

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?

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answered 2024-03-20 15:34:34 -0500

rraustad

13599 ●72 ●12 http://www.fsec.ucf.edu/

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.

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

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Last updated: Mar 20

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