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beopt hot water vs hot water, suppl.

asked 2018-08-13 18:02:47 -0500

tkranz
11 ●1

updated 2018-08-13 21:55:52 -0500

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4436 ●5 ●17 http://bleedinggreenna...

New to modelling in BEopt. I'm wondering in the output what the difference is in "hot water" and "hot water, suppl." The two combined are coming out to higher than my heating load...

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Since I;m modelling with a heat pump water heater in a garage (and i believe BEopt models that space as unconditioned), perhaps it's differentiating when it's able to use the heat pump vs supplemental heat (ie electric)?

tkranz ( 2018-08-14 22:45:42 -0500 )edit

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answered 2018-08-15 00:34:07 -0500

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10911 ●180 ●9 https://www.nrel.gov/b...

For heat pump water heaters, "hot water" refers to the electricity consumption by the heat pump and "hot water, suppl." refers to the electricity consumption of the backup resistance element. All other water heater types (i.e., storage, tankless) will just show the "hot water" end use.

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Asked: 2018-08-13 18:02:47 -0500

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Last updated: Aug 15 '18

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