[Bldg-sim] LEED EAC1 Exceptional calcs - heating consumption

[Nick Caton]

I think something is missing in the story here...

 

A reduction of lighting consumption is claimed to reduce heating
consumption?

 

As you say, lights are an internal heat source to some extent...
reducing the lighting energy consumed by a significant fraction should
cause a relative increase in heating and a reduction of cooling
energies, right?  I'm going to assume the reviewer's vocabulary is
simply flipped around and this is the point they were trying to make:
Changing lighting should affect heating/cooling consumptions.

 

As to how you document this - It would seem simplest if you simply
worked your "exceptionally calculated" reduction back into the model.
>From your description I don't know exactly what your "hard-wiring"
strategy is that's chopping off 40%, but applying a factor to the space
LPD's may be a decent approach.  You could then demonstrate before/after
results showing lighting/heating/cooling consumptions moving about by
setting up  a parametric run and using those reports.

 

~Nick

 

 

 

NICK CATON, P.E.

SENIOR ENGINEER

 

Smith & Boucher Engineers

25501 west valley parkway, suite 200

olathe, ks 66061

direct 913.344.0036

fax 913.345.0617

www.smithboucher.com 

 

From: bldg-sim-bounces at lists.onebuilding.org
[mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Ashraf Khan
Sent: Wednesday, October 05, 2011 8:03 AM
To: bldg-sim at lists.onebuilding.org
Subject: [Bldg-sim] LEED EAC1 Exceptional calcs - heating consumption

 

I have performed Exceptional calculations in EAC1 credit for internal
hard-wired lighting. I achieved savings up to 40%. 

 

In Preliminary review, I received below comment 

 

"It is does not appear as if the reduction in heating consumption was
considered. Address the reduction in space heating and ensure the
consumption is appropriately reduced, and provide a revised template and
updated energy model output summaries reflecting the changes."

 

 

As light generates heating, so leed reviewer is requesting to provide
the heating consumption calculations and to achieve more savings as it
directly impact on cooling, even though calculations performed
exceptionally.

 

Could you please guide how to perform these heating consumption
calculations and how to incorporate in energy model and Template with
reference?

 

Thanks,

Ashraf Khan

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