[BLDG-SIM] Determination of Boiler System Losses and Efficiencies

[Michael Wilson]

I've been looking for info on this subject for some time, with little
success. There seems to be lots of testing of combustion efficiency, but
little info on jacket losses and off cycle stack losses. Which makes it
difficult to create accurate DOE-2 boiler curves. But DOE-2's default
curves, and in fact the whole boiler simulation model, is, in my opinion,
not particularly accurate.

I'll be very interested in what you can find out.
Michael Wilson, P.Eng.
Enerficiency Consulting
455 Elphinstone Ave.
Gibsons, BC, V0N 1V1
604-886-9864 phone
604-676-2604 fax (Vancouver local #)
mwilson at enerficiency.ca

  -----Original Message-----
  From: postman at gard.com [mailto:postman at gard.com]On Behalf Of Jim Willson
  Sent: December 1, 2003 1:41 PM
  To: BLDG-SIM at gard.com
  Subject: [BLDG-SIM] Determination of Boiler System Losses and Efficiencies


  TC 4.7 has been approached with a request for an insight, studies,
articles, or other sources that could assist them in developing tools,
intended for gas customer use, to estimate:
           1.  Annual Fuel Utilization Efficiency or Seasonal Boiler
Efficiency
           2.  Cycling losses
           3.  Fuel savings of lowering the operating steam pressure
           4.  Efficiency reduction due to oversized boilers

  This is an area that doesn't seem to get discussed much in the building
energy arena.  I am interested to see what develops.  Please share anything
you know.

  Regards,

  Jim Willson
  Applications Subcommittee Chair TC 4.7

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