Dear E-questers,
I am working on a hospital building project which uses existing heat pump
at site for service water heating.
The issue is arising in modeling baseline hot water system, which as per
ASHRAE 90.1-2013 Table G3.1.1-2 is specified as gas storage water heater
for hospital building type. The gas utility rates will not be available for
the project since no gas heating system is used at site.
I want to confirm whether identical system as proposed case can be
considered in baseline model as the energy cost savings will need to be
compared with existing heat pump at site.
Thanks in advance.