HAVC load: IdealAirLoad? or zone sizing

asked 2020-10-19 21:03:06 -0500

cescjy's avatar

updated 2020-10-24 11:29:34 -0500

Hi everyone. I am an OpenStuido user trying to calculate the HVAC load, but I am confused by choosing from IdealAirLoad and zone sizing method. So I built a simplest room (5m x 5m, defult height, shanghai cswd weather file) to tell the difference from the two methods. Here are what I`ve got from the calculation.

1.zone sizing-Estimated Cooling Peak Load Components (Grand Total is supposed to be the HVAC load) image description

2.IdealAirLoad-outdoor air cooling + Zone cooling ( the total of these two values is suppsed to be the HVAC load ) image description

As we can see, the differece from these two HVAC load Can someone please tell me why this happens? and which method is supposed to be the right one? Thank you!

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