[Equest-users] should i simulate the heating system when no heating system in proposed building

Matthew W. Higgins MWHiggins at bpce.com
Fri May 4 08:08:43 PDT 2012

There is a LEED CIR that allows for a “work-around” for this case, which has worked for me in the past. Basically, you do need to have the heating system in place, but the thermostat set-point in both models should be so low that heating does not energize. In the past I’ve used 10° F. and made sure to document this thoroughly for the LEED/GBCI reviewers so they are aware of what I’m presenting.

I can’t recall the number of the CIR off the top of my head, but you may want to research this and determine whether it is applicable to your case or not.

Matthew Higgins, CEM, HBDP, LEED-AP (BD+C)
Energy Project Manager

Bridgers & Paxton Consulting Engineers, Inc.
4600-C Montgomery Blvd. NE
Albuquerque, NM  87109
505-888-1436  Fax

From: equest-users-bounces at lists.onebuilding.org [mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Cam Fitzgerald
Sent: Friday, May 04, 2012 6:36 AM
To: 'CleanTech Analytics'; '一叶扁舟'
Cc: 'equest-users'
Subject: Re: [Equest-users] should i simulate the heating system when no heating system in proposed building

You need a hearing source to select your Appendix G Baseline system type so Table G3.1#10 is telling you that you should enter Table G3.1.1A in the “Electric and Other” column when the design does not require heat. Without this statement it would be unclear how to select the Baseline system type. Hope this helps.

Have a great day!

Cam Fitzgerald

From: equest-users-bounces at lists.onebuilding.org<mailto:equest-users-bounces at lists.onebuilding.org> [mailto:equest-users-bounces at lists.onebuilding.org]<mailto:[mailto:equest-users-bounces at lists.onebuilding.org]> On Behalf Of CleanTech Analytics
Sent: Friday, May 04, 2012 2:19 AM
To: 一叶扁舟
Cc: equest-users
Subject: Re: [Equest-users] should i simulate the heating system when no heating system in proposed building

My interpretation of this is:
If you model a building with electric baseboard heating in a climate that has no real heating load, and you use a baseline and model with baseboard heating that your thermostat should not turn the heating on so long as your building is thermally well designed- so the simplest route would be to use the system specified for compliance in your model as a method to show heating is not needed. You could set your setpoint to the minimum for thermal comfort for your region. Then document why you did not use heating in the actual building possibly might use the tool called 'climate consultant' to show how your climate supports this design for documentation.

Others on this list may have know more, but I figure I would share-- best of luck

Jeremiah D. Crossett
CleanTech Analytics


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On Thu, May 3, 2012 at 9:02 PM, 一叶扁舟 <546751190 at qq.com<mailto:546751190 at qq.com>> wrote:
Dear all
I have one question: when proposed building has no heating system, such as in HongKong, the weather is hot, it’s not necessary to design heating system in winter.
While Appendix G table G3.1 No.10 says: “c. Where no heating system exists or no heating system has been specified, the heating system classification shall be assumed to be electric, and the system characteristics shall be identical to the system modeled in the baseline building design.”
Should it be explained as such: if the building is to design heating system later, the heating system should be electric, but not in allusion to HongKong’s instance. Therefore when there’s no necessary to design heating system in proposed building, the two models (proposed and baseline ) can be modeled without heating system, am I right?
Thanks a lot.

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