[Equest-users] LED lighting

[David Griffin II]

Jeff is spot on. It is a little more tricky if you have dimmable daylight controls as eQUEST only models dimming for fluorescent lights with ballasts whose performance is not as linear as LEDs when dimmed.

I usually just count the energy savings from dimming LED daylight controls as conservative rather than find a more accurate way of modeling it.

Has anyone employed a more accurate way of modeling this? Are you willing to share?

Thanks in advance!

[ARCH | NEXUS]<http://www.archnexus.com>
DAVID W. GRIFFIN II
BEMP
ENERGY ANALYST
2505 E Parleys Way
Salt Lake City, UT 84109
Office 801.924.5028
archnexus.com<http://www.archnexus.com>
[Twitter]<https://twitter.com/arch_nexus>[Facebook]<https://www.facebook.com/pages/Architectural-Nexus/179588705397563?ref=ts&fref=ts>[Youtube]<https://www.youtube.com/channel/UCYRPWKF-yp-AUiI8ia2XfKw?feature=mhee>[LinkedIn]<https://www.linkedin.com/company/architectural-nexus>

From: Haberl, Jeff [mailto:jhaberl at tamu.edu]
Sent: Thursday, November 05, 2015 2:20 PM
To: Fakeha Sehar; equest-users at lists.onebuilding.org
Subject: Re: [Equest-users] LED lighting

Hello Fakeha:

Simulations programs like eQuest and DOE-2 don’t actually model the lighting, but rather model the heat gain from the lighting.

Therefore, all you really need is the electricity use of the intended lighting to enter into the input file, in one of several ways (i.e., Watts or Watt/ft2), then perhaps enter what type of light it is to estimate where the heat from the light is going.

Jeff

8=!  8=)  :=)  8=)  ;=)  8=)  8=(  8=)  8=()  8=)  8=|  8=)  :=')  8=) 8=?
Jeff S. Haberl, Ph.D.,P.E.inactive,FASHRAE,FIBPSA,......jhaberl at tamu.edu<mailto:........jhaberl at tamu.edu>
Professor........................................................................Office Ph: 979-845-6507
Department of Architecture............................................Lab Ph:979-845-6065
Energy Systems Laboratory...........................................FAX: 979-862-2457
Texas A&M University...................................................77843-3581
College Station, Texas, USA, 77843..............................URL:www.esl.tamu.edu
8=/  8=)  :=)  8=)  ;=)  8=)  8=()  8=)  :=)  8=)  8=!  8=)  8=? 8=) 8=0


From: Equest-users [mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Fakeha Sehar
Sent: Thursday, November 5, 2015 3:00 PM
To: equest-users at lists.onebuilding.org<mailto:equest-users at lists.onebuilding.org>
Subject: [Equest-users] LED lighting

I want to model LED lighting in eQuest. Any idea how?


-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20151106/fdb3a9d7/attachment-0005.htm>