Dear all,
We noticed that the HVAC capacity is changing according to
different COP by using the autosize option for Cooling Coil Capacity. For
example, for the same HVAC: if the COP is 2,94 the result in the eio file
for the total capacity is 62726Watts and, if that cop is decreased to
2,39 the capacity becomes 94906Watts.
Then, we tried to fix the capacity to change only the COP value.
But we got a severe error:
Sizing: COIL:DX:COOLINGBYPASSFACTOREMPIRICAL "AC_ZN_1
COOLING COIL": Rated air volume flow rate per watt of rated total cooling
capacity is out of range.
We also tried to put the minimum, average and maximum value of
rated air volume rate (times the capacity as required) but we got the same
severe error.
Our questions are:
-
Why the capacity is changing
according to cop? Should not it be according to zone loads and design days??
-
If no rated air volume flow is
accepted, how do we use the HVAC Cooling Coil Capacity without autosize option?
Thanks,
Labeee team.
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