[Bldg-sim] ASHRAE 90.1 lighting control question

[Bishop, Bill]

x2
(What Nick said.)

William Bishop, PE, BEMP, LEED AP | Pathfinder Engineers & Architects LLP
Senior Energy Engineer
134 South Fitzhugh St.Rochester, NY 14608<tel:14608>
T: (585) 325-6004<tel:5853256004> Ext 114F: (585) 325-6005<tel:5853256005>


-----Original message-----
From: Nick Caton <ncaton at smithboucher.com>
To: Sunayana Jain <Sjain at ls-energy.com>, 'Adam Barker' <ABarker at pemi.com>, "bldg-sim at lists.onebuilding.org" <bldg-sim at lists.onebuilding.org>
Sent: Tue, Apr 2, 2013 15:49:39 GMT+00:00
Subject: Re: [Bldg-sim] ASHRAE 90.1 lighting control question

In spirit we’re on the same page, but in practice I’ve come to approach this slightly differently:

I do not touch the Baseline model at all in regards to classrooms, breakrooms, and conference/meeting rooms.  Rather, I understand that the fractional lighting schedule used in both models is taken to represent the prescriptively required sensors (there’s language in Table G3.1 along these lines), and in turn I simply do not allow for an LPD reduction for those spaces in the Proposed model.

I expect the two approaches probably do not have a meaningfully different end-result for most projects, but can anecdotally affirm the above approach has made it through several LEED reviews.

Regards,

~Nick
[cid:489575314 at 22072009-0ABB]

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 Sunayana Jain
Sent: Tuesday, April 02, 2013 10:16 AM
To: 'Adam Barker'; bldg-sim at lists.onebuilding.org
Subject: Re: [Bldg-sim] ASHRAE 90.1 lighting control question

Your interpretation is correct.

Thanks,

Sunayana Jain
LEED® AP BD+C
L&S Energy Services, Inc.
58 Clifton Country Rd, Suite 203
Clifton Park, NY 12065

From: bldg-sim-bounces at lists.onebuilding.org<mailto:bldg-sim-bounces at lists.onebuilding.org> [mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Adam Barker
Sent: Tuesday, April 02, 2013 11:06 AM
To: 'bldg-sim at lists.onebuilding.org'
Subject: [Bldg-sim] ASHRAE 90.1 lighting control question

Hello everyone,

A quick question regarding ASHRAE 90.1-2007 lighting control requirements (as I typically model buildings in Canada, and am not used to referencing ASHRAE 90.1).

Appendix G references section 9.4.1 for control, which states that automatic controls (e.g. occupancy sensors) are required in certain classrooms, conference/meeting rooms and lunch/break rooms.  Does this mean that I will need to model the appropriate LPD reduction factor per Table G3.2  in these spaces in the reference building, as well as the proposed model (if they are installed)? I.e., no credit given?  90.1-2010 seems to expand on this, identifying occupant sensors specifically, and adding restrooms, small offices, lockers rooms and some storage room.

Do I have this right?

Thanks,

Adam Barker, C.E.T., LEED AP BD+C
Sustainability Project Manager
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