Hi
I modeled a single zone building with DX coil and parallel fan-power box. I try to find the electrical power end-use of exhaust fan. ?The following are several parameters in the model.
INFILTRATION: Zero
RETURN-FAN-LOC: Relief
SUPPLY-KW/FLOW: Same for supply and return fans
RETURN-CAP-RATIO: 1
Fan EIR curve: Same for supply and return fans
I assume that the exhaust fan just removes the outside air. ?However, for a few hours at the beginning of occupied period, Return fan elec (kW) is equal to Supply fan elec (kW) even the Ratio of outside air to total supply air is not 100%. I am not sure how eQUEST calculates the exhaust airflow rate when using a relief fan. Your feedback on this issue is highly appreciated.
Thanks,
?Shaojie
?