[Bldg-sim] Modelling budget case boiler efficiency
cj at cr-jay.ca
Tue Aug 5 13:22:02 PDT 2008
Table 6.8.1F, ASHRAE 90.1 lists the minimum boiler efficiencies for
modelling the budget case. Two types of efficiencies are listed Et -
thermal efficiency and Ec - combustion efficiency. How do these two
efficiency rating types translate into DOE2.1e boiler efficiency.
For example a boiler listed in Table 6.8.1F with an Et = 75%, would
that be HW-BOILER-HIR = 1.333?
What about a boiler listed as 80% Ec?
I am somewhat confused about the two efficiency ratings.
Chris Jones, P.Eng.
14 Oneida Avenue
Toronto, ON M5J2E3
Tel. 416 203-7465
Fax. 416 946-1005
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