<br><font size=2 face="sans-serif">Hi Vikram and Rohini, </font>
<br>
<br><font size=2 face="sans-serif">Thanks for the response. </font>
<br>
<br><font size=2 face="sans-serif">Well, I see that on July/August, the
Humidity levels are pretty high. So in order to remove excess humidity
in the air, the heater operates. </font>
<br>
<br><font size=2 face="sans-serif">So that satisfies the heating energy
levels. </font>
<br>
<br><font size=2 face="sans-serif">But actually I am trying to find a correlation
b/w the HVAC Power consumption and Heat Index(Dry Bulb + Humidity) per
month. </font>
<br>
<br><font size=2 face="sans-serif">For statistical purposes, am finding
the correlation between the Power consumed and difference b/w the actual
and the expected. </font>
<br>
<br><font size=2 face="sans-serif">For eg. If my room temp is 72F, and
outside the Heat Index is 90F, </font>
<br>
<br><font size=2 face="sans-serif"><b>Difference is 18F. Power Consumed
is P1</b></font>
<br>
<br><font size=2 face="sans-serif">If the outside temperature is 54F,</font>
<br>
<br><font size=2 face="sans-serif"><b>Difference is again 18F. Power consumed
is P2. </b></font>
<br>
<br><font size=2 face="sans-serif">And there is a huge difference, as P1>
P2. Always. Anything to be altered in the Heater Side of HVAC. <br>
</font>
<br><font size=2 face="sans-serif">And also please let me know on how to
nullify the humidity control of HVAC in eQUEST! The wizards do not
have an option. And am unable to find it in the Detailed Edit. </font>
<br>
<br><font size=2 face="sans-serif">Am unable to attach the project file,as
it is approximately 18Mb. I will upload it in a common area and will
update you with the link! </font>
<br>
<br>
<br><font size=2 face="sans-serif">Regards,<br>
Siddharth Venkataraman<br>
Tata Consultancy Services<br>
Mailto: siddharth.v@tcs.com<br>
Website: </font><a href=http://www.tcs.com/><font size=2 face="sans-serif">http://www.tcs.com</font></a><font size=2 face="sans-serif"><br>
____________________________________________<br>
Experience certainty. IT Services<br>
Business Solutions<br>
Outsourcing<br>
____________________________________________</font>
<br>
<br>
<br>
<table width=100%>
<tr valign=top>
<td><font size=1 color=#5f5f5f face="sans-serif">From:</font>
<td><font size=1 face="sans-serif">"Sami, Vikram" <Vikram.Sami@perkinswill.com></font>
<tr valign=top>
<td><font size=1 color=#5f5f5f face="sans-serif">To:</font>
<td><font size=1 face="sans-serif">R B <slv3sat@gmail.com>, Siddharth
V <siddharth.v@tcs.com></font>
<tr>
<td valign=top><font size=1 color=#5f5f5f face="sans-serif">Cc:</font>
<td><font size=1 face="sans-serif">equest-users <equest-users@lists.onebuilding.org></font>
<tr valign=top>
<td><font size=1 color=#5f5f5f face="sans-serif">Date:</font>
<td><font size=1 face="sans-serif">06/29/10 06:58 PM</font>
<tr valign=top>
<td><font size=1 color=#5f5f5f face="sans-serif">Subject:</font>
<td><font size=1 face="sans-serif">RE: [Equest-users] HVAC simulation</font></table>
<br>
<hr noshade>
<br>
<br>
<br><font size=2 face="Consolas">To follow up on Rohini's comments:</font>
<br><font size=2 face="Consolas"> </font>
<br><font size=2 face="Consolas">If your lights and equipment are on the
12/7 schedule, and you have a constant volume reheat then your supply volume
is probably based on the peak condition, and anything below is reheat.
Did your cooling load also go down drastically when you switched
to 12/7 mode?</font>
<br><font size=2 face="Consolas"> </font>
<br><font size=2 face="Consolas">Could you attach an inp file?</font>
<br><font size=2 face="Consolas"> </font>
<br><font size=1 color=#808080 face="Arial"><b>Vikram Sami</b>, LEED AP</font>
<br><font size=1 color=#808080 face="Arial">Sustainable Design Analyst</font>
<br><font size=1 color=#808080 face="Arial">1382 Peachtree St. NE, Atlanta,
GA 30309</font>
<br><font size=1 color=#808080 face="Arial">t: 404-443-7462 f:
404.892.5823 e: vikram.sami@perkinswill.com
</font><a href=http://www.perkinswill.com/><font size=1 color=#808080 face="Arial">www.perkinswill.com</font></a>
<br><font size=1 color=#808080 face="Arial"><b>Perkins+Will.</b> </font><font size=1 color=#bfbf00 face="Arial">Ideas
+ buildings that honor the broader goals of society</font>
<br><font size=2 face="Calibri"> </font>
<br><font size=2 face="Consolas">-----Original Message-----<br>
From: equest-users-bounces@lists.onebuilding.org [</font><a href="mailto:equest-users-bounces@lists.onebuilding.org"><font size=2 face="Consolas">mailto:equest-users-bounces@lists.onebuilding.org</font></a><font size=2 face="Consolas">]
On Behalf Of R B<br>
Sent: Tuesday, June 29, 2010 8:56 AM<br>
To: Siddharth V<br>
Cc: equest-users<br>
Subject: Re: [Equest-users] HVAC simulation</font>
<br><font size=2 face="Consolas"> </font>
<br><font size=2 face="Consolas">Depends on what kind of system you are
using. looks like there is some</font>
<br><font size=2 face="Consolas">kind of reheat going on in the night hours
during summer.</font>
<br><font size=2 face="Consolas">-rohini</font>
<br><font size=2 face="Consolas"> </font>
<br><font size=2 face="Consolas">On 6/29/10, Siddharth V <siddharth.v@tcs.com>
wrote:</font>
<br><font size=2 face="Consolas">> Hi,</font>
<br><font size=2 face="Consolas">> </font>
<br><font size=2 face="Consolas">> I am currently using eQUEST to simulate
the performance of a building (an</font>
<br><font size=2 face="Consolas">> ideal case), where in the HVAC operates
at the below temperatures 24x7 for</font>
<br><font size=2 face="Consolas">> the whole year.</font>
<br><font size=2 face="Consolas">> </font>
<br><font size=2 face="Consolas">> Below are the preset values:</font>
<br><font size=2 face="Consolas">> </font>
<br><font size=2 face="Consolas">> Heat when temp <= 74F</font>
<br><font size=2 face="Consolas">> </font>
<br><font size=2 face="Consolas">> Cool when temp >= 76F</font>
<br><font size=2 face="Consolas">> </font>
<br><font size=2 face="Consolas">> Ideal temp of the building is 75F</font>
<br><font size=2 face="Consolas">> </font>
<br><font size=2 face="Consolas">> Also cool, when the outside temp
>=72F</font>
<br><font size=2 face="Consolas">> </font>
<br><font size=2 face="Consolas">> </font>
<br><font size=2 face="Consolas">> Error in Simulation:</font>
<br><font size=2 face="Consolas">> </font>
<br><font size=2 face="Consolas">> I always see that the total heating
power consumed in Jan/Dec month</font>
<br><font size=2 face="Consolas">> (Winter) is lesser than that July
and August Month (Summers).</font>
<br><font size=2 face="Consolas">> </font>
<br><font size=2 face="Consolas">> But the simulation's outside Dry
Bulb Temperature (avg, min and max</font>
<br><font size=2 face="Consolas">> Temperature) is higher during July/August
when compared to Jan/Dec month.</font>
<br><font size=2 face="Consolas">> </font>
<br><font size=2 face="Consolas">> </font>
<br><font size=2 face="Consolas">> If I operate the HVAC for 12x7 (7am
to 7pm) for all the days, then it</font>
<br><font size=2 face="Consolas">> follows the seasonal pattern (heating
power is higher in Jan/Dec than</font>
<br><font size=2 face="Consolas">> Jul/Aug).</font>
<br><font size=2 face="Consolas">> </font>
<br><font size=2 face="Consolas">> But I need to get the power O/P when
it operates for 24x7 only!</font>
<br><font size=2 face="Consolas">> </font>
<br><font size=2 face="Consolas">> Please let me know as to why this
error introduced, and how to rectify it!</font>
<br><font size=2 face="Consolas">> Or must I add some more details in
the detailed edit.</font>
<br><font size=2 face="Consolas">> </font>
<br><font size=2 face="Consolas">> </font>
<br><font size=2 face="Consolas">> </font>
<br><font size=2 face="Consolas">> Regards,</font>
<br><font size=2 face="Consolas">> Siddharth Venkatraraman</font>
<br><font size=2 face="Consolas">> Tata Consultancy Services</font>
<br><font size=2 face="Consolas">> Mailto: siddharth.v@tcs.com</font>
<br><font size=2 face="Consolas">> Website: </font><a href=http://www.tcs.com/><font size=2 face="Consolas">http://www.tcs.com</font></a>
<br><font size=2 face="Consolas">> ____________________________________________</font>
<br><font size=2 face="Consolas">> Experience certainty. IT Services</font>
<br><font size=2 face="Consolas">>
Business Solutions</font>
<br><font size=2 face="Consolas">>
Outsourcing</font>
<br><font size=2 face="Consolas">> ____________________________________________</font>
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