Setting Up an Extract Only System¶
For extract only air-side systems you are able to input the design flow rate in l/s, l/s/m2, or ACH. If this value is zero then the minimum fresh air rate specified by the NCM will be used.
Monitoring for out-of-range values set to True will reduce the heating, cooling, auxiliary, and HWS consumption by 5%.
Exercise and Notes¶
In this example there is local mechanical exhaust and the SFP has been entered as 0.5 W per l/s.
The design flow rate will be 2 l/s/m2, giving a fan power density of 0.5 x 2 = 1 W/m2.
Monitoring for out-of-range values = True.