Boiler parasitic energy

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Forced draft boilers include fan energy of the boiler combustion air fan. I have been in a discussion with colleagues as to whether or not this parasitic energy is to be included in the Appendix G proposed design model. My belief is that this energy should be included and that it would not be included in the baseline case where a natural draft boiler is specified.

Any thoughts?

Christopher Jones, P.Eng. | Senior Energy Analyst
RWDI
901 King Street West, Suite 400, Toronto, ON M5V 3H5 Canada
Tel: (519) 823-1311 ext 2052
rwdi.com

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Chris,
The boiler called for by 90.1 per G3.1.3.2 is "natural draft". No burner
fan for that type.

Bldg simulation's picture
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p.s., I've read 90.1 MANY times and never noticed that till a GBCI reviewer
pointed it out for one of my models which included significant electric
energy for a gas boiler. :(

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Thanks for all your responses.

Christopher Jones, P.Eng. | Senior Energy Analyst
RWDI
901 King Street West, Suite 400, Toronto, ON M5V 3H5 Canada
Tel: (519) 823-1311 ext 2052
rwdi.com

Bldg simulation's picture
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Joined: 2016-04-13
Reputation: 400