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<DIV dir=ltr align=left><FONT color=#0000ff size=2 face=Arial><SPAN
class=545055018-11042012>Yusuf,</SPAN></FONT></DIV>
<DIV dir=ltr align=left><FONT color=#0000ff size=2 face=Arial><SPAN
class=545055018-11042012></SPAN></FONT> </DIV>
<DIV dir=ltr align=left><FONT color=#0000ff size=2 face=Arial><SPAN
class=545055018-11042012>Also check your thermostat throttling ranges and
whether the unmet hours are occuring at system startup.</SPAN></FONT></DIV>
<DIV dir=ltr align=left><FONT color=#0000ff size=2 face=Arial><SPAN
class=545055018-11042012></SPAN></FONT> </DIV>
<DIV align=left><FONT size=2 face=Arial>Shaun Martin LEED
AP<BR>Principal<BR>Shaun Martin Consulting<BR>2060 Pine Street, Vancouver BC V6J
4P8<BR>604-789-1095<BR><A
href="mailto:smartin@shaunmartinconsulting.com">smartin@shaunmartinconsulting.com</A><BR>member
CAGBC, ASHRAE<BR></FONT></DIV>
<DIV> </DIV><BR>
<DIV dir=ltr lang=en-us class=OutlookMessageHeader align=left>
<HR tabIndex=-1>
<FONT size=2 face=Tahoma><B>From:</B> equest-users-bounces@lists.onebuilding.org
[mailto:equest-users-bounces@lists.onebuilding.org] <B>On Behalf Of </B>Bruce
Easterbrook<BR><B>Sent:</B> Wednesday, April 11, 2012 6:33 AM<BR><B>To:</B>
Yusuf Turab<BR><B>Cc:</B> equest-users@lists.onebuilding.org<BR><B>Subject:</B>
Re: [Equest-users] Gated Community & Roof reflectivity<BR></FONT><BR></DIV>
<DIV></DIV><FONT size=+1><TT>Auto sizing is to ball park your system.
There is no computer program which with the press of a button will design your
building for you. You have unmet hours because you have conflicts in your
design. You now have to identify the conflicts and resolve them. eQuest
works by prioritizing the cooling system, hence when you have conflicts they
show up mostly as unheated hours. eQuest has a low default on airflow, 0.5
cfm/SF, this many times is a good place to start. Depending on where you
are 0.75 or 1.0 could work better. You can also vary the flow to different
zones independently. You can't put 0.5 cfm into 20 spaces from the same
AHU and expect the heating and cooling needs of each space to be met 100% of the
time. Get into your sim file and figure out where the spaces are with
large unmet hours, figure out why and start adjusting the inputs to reduce
them.<BR>There is no point to average the 4 orientations, nor is it allowed,
just LEED mumbo jumbo. It just illustrates how the orientation of your
building effects the energy consumption to run it. Most modellers get a
building, a street, a front and back with no option on orientation. That
is your base case. It can be handy to illustrate design flaws if there is
a large difference in energy consumption in different directions. Just
don't call it that when you are telling the architect a 20 story atrium is not a
great idea on the north side of a building. lol.<BR></TT></FONT><FONT
size=+1><TT>Bruce Easterbrook P.Eng.<BR>Abode Engineering</TT></FONT><BR><BR>On
10/04/2012 02:53 PM, Yusuf Turab wrote:
<BLOCKQUOTE
cite=mid:CACVeg1XXC-bH98HcYcF5sK9_zyuRtB8UH9caTH0y3s6GVvFD_A@mail.gmail.com
type="cite">Hello Group<BR>
<UL>
<LI>Why do I get unmet hours even when I select the auto size option in the
HVAC system? What is the point of auto sizing?<BR>
<LI>Is there a way to simulate all 4 orientations and get an average result
for the base case? </LI></UL>
<P>Thanks<BR></P>Yusuf Turab<BR>IGBC Accredited Professional, LEED Green
Associate & GRIHA Trainer<BR>Y T Enterprises<BR>18 A, Hamsa Layout ¦ R.S
Puram ¦ Coimbatore - 641002<BR><BR><A href="http://www.ytenterprises.com/"
target=_blank
moz-do-not-send="true">http://www.ytenterprises.com/</A><BR><BR>***** Email
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<DIV class=gmail_quote>On 10 April 2012 00:54, Yusuf Turab <SPAN
dir=ltr><<A href="mailto:yusuf@ytenterprises.com"
moz-do-not-send="true">yusuf@ytenterprises.com</A>></SPAN> wrote:<BR>
<BLOCKQUOTE
style="BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex; PADDING-LEFT: 1ex"
class=gmail_quote>Hello
Group<BR><BR>
I have just started working on my first energy modeling project. I have two
questions:<BR>
<UL>
<LI>How do I model roof reflectivity. I want to model a roof of 4 inch
concrete with 1 inch stucco at the bottom and top and cover the roof with
cool roof tiles. I am not sure how I can account for the energy efficiency
gains compared to base case through a high SRI roof.
<LI>I am trying to model a large gated community with 330 villas and 7
other common buildings. As someone suggested on this group I am modeling
each building type separately and using excel to come up with a total
energy usage. But I am not sure how to model the street lighting and
landscape lighting at the exteriors. We plan to use solar street lights
and I want to demonstrate the savings through use of solar energy.
</LI></UL>Many Thanks<BR> <BR>Yusuf Turab<BR><BR><BR><BR>
<DIV class=gmail_quote>On 10 April 2012 00:32, nirupama lakshminarasimhan
<SPAN dir=ltr><<A href="mailto:nirupamalnarasimhan@gmail.com"
target=_blank
moz-do-not-send="true">nirupamalnarasimhan@gmail.com</A>></SPAN>
wrote:<BR>
<BLOCKQUOTE
style="BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex; PADDING-LEFT: 1ex"
class=gmail_quote>
<P>I am modeling a big public school with a lot of systems and custom
windows. The equest file we have right now is taking too long to load.
I've tried opening it from different locations- the default equest project
folder on C: , the public server, external HDD, etc. It is just too slow
in "importing project data" when it opens. The last time this happened, it
was taking too long to load the BDL file and I ended up deleting a host of
systems and starting from scratch. All my files- the .inp, .pd2, etc are
in the same path. I just cannot get it to work faster. I'm trying to
calibrate the model and it is an awfully long wait for each simulation.
Does someone have any thoughts on how I could get this to work faster?
</P>
<P> </P>
<P>Thank you.</P><SPAN><FONT color=#888888>
<P>Nirupama</P></FONT></SPAN><BR>_______________________________________________<BR>Equest-users
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