Dear All,
I am modeling a Hotel in eQUEST for which the baseline HVAC system type is
PTHP. My proposed system has AHUs & FCs supplied by a secondary pump circuit
using chilled water.
Can anyone indicate to me as to how I should plce my baseline system (i.e on
the basis of site, floor or thermal zones). The obvious choice is thermal
zones as per the proposed design.
Thanks in adavnce
Anura
Anura,
It depends on how large your building is and which version of ASHRAE
you're using. For ASHRAE 90.1-2004, the baseline should have one
system per thermal zone (even if you're proposed model is set up
differently). If you're in ASHRAE 90.1-2007, up to a certain size
building, it's still one system per thermal zone. After the threshold
size, you're supposed to do one system for each floor of the building.
I think the threshold size is 150,000 sq ft, but double check App.G to
be sure.
Kristy