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I have seen a number of projects with an occupancy sensor in each
space. The sensor turns off the lights and shuts the VAV box to a
minimum when there are no occupants in the space. This saves
lighting, outdoor air and fan energy. The same type of sensor is
also used to control fan coils - the outdoor air duct to the fan coil
also has a damper connected to the occupancy sensor. Schools are
where I have seen this type of sensor used. <br><br>
At 08:27 AM 14/01/2011, John T. Forester wrote:<br>
<blockquote type=cite class=cite cite="">Content-Language: en-US<br>
Content-Type: multipart/alternative;<br>
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boundary="_000_FE42F90348662D4AA5177E97E20458AB4F73842198JupiterBBVHis_"<br>
<br>
Aman,<br>
<br>
Appendix G, Table G3.2 allows for either 10% or 15% reductions in
connected lighting power based on the type of control your proposed
design includes. Perhaps increasing the throttling range in those
spaces by the same amount will provide some savings for you. If
your throttling range is 5$B!k(BF, try changing it to 5.5$B!k(BF or
6$B!k(BF and see how the heating, cooling and fan energy is
affected.<br>
<br>
My thought is that if an occupancy sensor also adjusts the setback/set
forward temperature, you can make an educated guess on how many degrees
the room will vary before another occupant enters the room. Then
the room will have to be conditioned back to the occupied setpoint (based
on your heating/cooling schedule) once someone enters the space. I
haven$B!G(Bt vetted this so if someone can see an issue with this
approach, please chime in.<br>
<br>
John<br>
<br>
John T. Forester, P.E., LEED AP, Mechanical Design Engineer <b>I BVH
Integrated Services I </b>617.658.9008 tel <b>I </b>617.244.3753 fax <b>I
</b>One Gateway Center Suite 506, Newton MA 02458 <b>I
<a href="http://www.bvhis.com">www.bvhis.com</a> I Hartford $B!|(B New
Haven $B!|(B Boston<br>
</b> <br>
<b>From:</b> equest-users-bounces@lists.onebuilding.org
[<a href="mailto:equest-users-bounces@lists.onebuilding.org" eudora="autourl">
mailto:equest-users-bounces@lists.onebuilding.org</a>] <b>On Behalf Of
</b>John Aulbach<br>
<b>Sent:</b> Friday, January 14, 2011 7:33 AM<br>
<b>To:</b> equest-users@lists.onebuilding.org; Amandeep Singh<br>
<b>Subject:</b> Re: [Equest-users] Integrated Thermostat and Occupancy
Lighting Control<br>
<br>
Sir:<br>
<br>
If you can explain how such a system would operate, I am sure it can be
relatively simulated in eQuest. I would gues the occupancy sensors can be
scheduled to follow people and the thermostat to operate by time.<br>
<br>
But I am unsure of your integration visualization.<br>
<br>
John Aulbach<br><br>
--- On <b>Thu, 1/13/11, Amandeep Singh
<i><amandeep.singh@energycenter.org></i></b> wrote:<br>
<dl><br>
<dd>From: Amandeep Singh <amandeep.singh@energycenter.org><br>
<dd>Subject: [Equest-users] Integrated Thermostat and Occupancy Lighting
Control<br>
<dd>To: equest-users@lists.onebuilding.org<br>
<dd>Date: Thursday, January 13, 2011, 3:58 PM<br><br>
<dd>Dear equest users,<br><br>
<dd> <br><br>
<dd>Is there any way to model an integrated thermostats and occupancy
sensors control system for VAV in equest?<br><br>
</dl> <br><br>
Thanks in advance,<br><br>
Aman <br><br>
<br><br>
<br><br>
<br><br>
<br><br>
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Chris Jones<br>
14 Oneida Avenue<br>
Toronto, ON M5J 2E3.<br>
Tel. 416-203-7465<br>
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