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Openstudio - PTHP more energy-intensive than baseboards?

asked Oct 16

afleming's avatar

updated Oct 16

I'm currently working on a model of a building serving multiple purposes of community centre, place of worship, and temporary housing. I'm having a problem in which the 'before' model, which uses only baseboard heating, is less energy intensive than the 'after' model, which uses heat pumps as the primary form of heating.

Report screengrabs below:

Left - 'before' model (baseboards only), Right - 'after' model (heat pumps with baseboard backup)

image description

I've gone over both models with a fine-tooth comb and the only difference I can find is the addition of PTHP in multiple thermal zones (rated COP 4.4).

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2

Hard to say without both OSM files. Consider sharing (e.g. public Google Drive)?

Denis Bourgeois's avatar Denis Bourgeois  ( Oct 16 )

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answered Oct 28

Greg Estep's avatar

Hello, here are some questions for you to consider: do both models have similar unmet hours? what is the compressor minimum air temperature setting (PTHP)? did you turn the backup electric resistance heating coil off (PTHP)?

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Asked: Oct 16

Seen: 101 times

Last updated: Oct 27 '24