[Bldg-sim] Modeling zones that are conditioned but not controlled

Jim Dirkes jim at buildingperformanceteam.com
Fri Feb 23 08:18:22 PST 2018


My opinion:
If there is no thermostat, the design essentially says that a wide
temperature variation is acceptable. You might consider arguing that those
zones *cannot *have unmet load hours because the design does not attempt to
control temperature.

For your own peace of mind (if your software allows it), you might also
report hourly temperatures in the zone to confirm that temps don't go crazy
unexpectedly during occupied hours.


On Fri, Feb 23, 2018 at 10:47 AM, Jones, Christopher via Bldg-sim <
bldg-sim at lists.onebuilding.org> wrote:

> I am wondering what others do for building zones that are conditioned but
> have no direct HVAC control. For example, a typical school will have a DOAS
> with perimeter radiation in exterior zones. There will be temperature and
> CO2 DCV in these occupied zones. The corridor will have transfer air and
> may have a couple of small supply diffusers from the DOAS but there is no
> thermostat to control the temperature in that corridor.
>
>
>
> If there is no thermostat, there is no setpoint so how does one determine
> if the corridor has unmet loads? How would one model the corridor zone in
> the baseline case for Appendix G?
>
>
>
>
>
> *Christopher R. Jones*, P.Eng.
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-- 

James V Dirkes II, CEO / President
The Building Performance Team Inc.
1631 Acacia Dr, Grand Rapids, MI 49504

(alphabet soup of efforts for greater understanding: PE, BEMP, BCxP, LEED
AP)

Direct / Mobile: 616.450.8653
jim at buildingperformanceteam.com

Website <http://buildingperformanceteam.com>l  LinkedIn
<https://www.linkedin.com/pub/jim-dirkes/7/444/413>

*Coffee conversation:*The first idea is the worst, but it is the most
important because it starts discussion and becomes the building block
for other ideas.
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