Hi there,
I'm trying to model an old building with an one-pipe steam heating
system. One unique thing about the system is that a heat exchanger in
the steam boiler heats a storage tank for domestic hot water. I haven't
found a way to connect the domestic loop to the steam boiler to prove
how inefficient this system is. I'm expecting that the boiler would run
much less if the systems were separated, but I need a way to show this.
Any ideas on how to connect the two loops would be appreciated. My other
question is, since this building has no air-side HVAC, what system
should I use to heat the zones? Right now I'm using a
'heating/ventilating' system, forcing the air flow to zero in all the
zones, and turning on baseboards attached to the steam loop. Is that the
right way to do it?

Thanks,

--
Dane Heimerman