should i simulate the heating system when no heating system in proposed building

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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.

=?ISO-8859-1?B?YWFyb24=?='s picture
Joined: 2012-04-17
Reputation: 0

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's picture
Joined: 2012-02-09
Reputation: -1

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

Cam Fitzgerald's picture
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Joined: 2011-09-30
Reputation: 0

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)

Matthew W. Higgins's picture
Joined: 2011-09-30
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