Auxiliary Energy Savings

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Hi All,

In my model, there are some auxiliary energy savings. The system has got no
hot water source. The heating is by Heat Pump. Can anyone guide me, what
saving is getting reflected as auxiliary and how to cut it down.

Many Thanks

Kushagra Juneja, IGBC AP, GRIHA T&E

Akshay Pahade's picture
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Hi Kushagra,

Can't say exactly what to look for, but I can tell where I'd start:
Open the pdf under Help -> Tutorials and Reference -> Detailed
Simulation Reports Summary.pdf

Scroll down to the last few pages - there you'll find a decent
description of what's covered under each use category - may give you
some ideas of items to review.

the waterside tab, or perhaps something like heatpump defrost/heat
trace.

I'd emphasize trying to understanding why you're seeing that consumption
before concluding it needs to be removed ;).

Best of luck!

~Nick

NICK CATON, P.E.

Nick-Caton's picture
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>From the DOE-2.2 Help:

Pumps & Auxiliary includes "all pumping energy, all energy defined using any auxiliary energy keywords (such as for a boiler, chiller, or furnace), crankcase heat of DX equipment, and humidification energy."

In my case, I have a building that uses air-source heat pumps in the baseline and geothermal heat pumps in the proposed. The reports show savings under Pumps & Aux for the proposed because the geothermal heat pumps do not have crankcase heaters even though there is additional pumping energy.

Kelsey Van Tassel

Kelsey VanTassel's picture
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