[Trace-users] FW: Condensing Boiler
joshuag at enertiaenergy.com
Thu May 8 14:53:45 PDT 2008
Good afternoon all,
I am wondering if anyone has found a good way to model condensing boilers with Trace. From discussions with Trane staff it appears that a new curve could be produced, although I did not receive much guidance from them.
I think one way to do it would be to create multiple boiler plants, the multiple boilers provide a way to do a sort of hot water reset temperature based on OSA.
My thought is that I can create a linear hot water supply water reset based on OSA temperature (using appendix G requirements) from 120°F @ 50°F to 180°F @ 20°F, with each boiler based on a 10°F OSA increment. From these temperature setpoints I would assume that the;
Heating Hot Water return temp = Heating Supply - 20°F (Temp rise from Aerco curve)
I would then be able input the corresponding efficiency at that point for the boiler.
Has anyone had any experience with this? Any advice would be greatly appreciated.
Thanks and have a great day,
Josh Goffin Energy Auditor/Analyst
Enertia Energy Inc.
9400 SW Beaverton-Hillsdale Hwy. Suite 205
Beaverton, OR 97005
JoshG at EnertiaEnergy.com
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