Can someone please confirm that according the ASHRAE 90.1-2004 Appendix
G the baseline HVAC System for High-Rise Residential is a PTAC unit?!
I've reviewed definitions in ASHRASE 90.1-2004 and building codes and
everything points to ASHRAE 90.1-2004 classifying the baseline HVAC
System for Residential (inclusive of high-rise) as a PTAC Unit under
Appendix G. I realize the Energy Cost Budget method has a different
baseline system.
Thanks,
Bungane Mehlomakulu, PE
Hi Bungane,
Yes, in Appendix G a high-rise residential building w/ heating source of
fossil fuel, fossil/electric hybrid, & purchased heat, the baseline system
is a PTAC. If the heat source is electric or other, the baseline system is
a PTHP.
Amanda Bogner, PE LEED AP
Bungane,
That depends on the proposed building's fuel type. If you are comparing
to an all electric system, the system 2 - PTHP would be the applicable
baseline system. But that has been the consensus from everyone I've
talked to here in Portland.
Eric