[bldg-sim] Baseboard Heating and Unmet Heating Load Hours

Michael Graney mgraney at bhengineers.com
Wed Nov 1 14:46:59 PST 2006


I am simulating PVAVS systems in e-QUEST with decoupled tempered 100%
outside ventilation air and fin tube radiators modeled as thermostatically
controlled baseboard heating. The baseboard capacities specified are more
than sufficient to meet what e-QUEST reports as the peak zone heating loads.
The .SIM file reports extensive underheated hours for all systems and hourly
reports show that the zone temperatures never achieve heating setpoint for
much of the occupied period.  Increasing the baseboard capacities by a
factor of 2-3 eliminates the unmet load hours but would not represent the
actual design.

Does anyone know of a way to improve the efficiency of baseboard heat in
e-QUEST so that the specified capacities allow heating loads to be met? Does
anyone have other suggestions for a way around this problem?

Michael W. Graney
Energy Analyst
Balzhiser & Hubbard Engineers
Mechanical - Electrical - Civil - Energy - Lighting - Surveying -
Commissioning - Sustainability
100 West 13th Avenue, Eugene, Oregon 97401  (541) 686-8478  fax (541)
345-5303


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