<div dir="ltr">eQuest does calculate light through exterior windows into a zone and reduce electrical light usage. It uses a split flux method that when compared to Radiance can over/under estimate the effect but it is a great first order tool (my opinion). Be aware that it only has light into the first zone with exterior windows - other zones will only "feel" the light as conductive heat transfer through the matched zone boundaries. There is a sunspace module in DOE2 that might work if you need to bring daylight more into central zones but I never sorted that out. <div>
<br></div><div style>eQuest is much faster for daylighting studies than E+ and OpenStudio right now. I've switched and miss the ease of eQuest on daylight harvesting. Once my ruby is up to scratch I'll automate it similar to eQuest (or maybe someone else will) but until that point assigning sensor locations and setting up daylight harvesting in E+/OS is much more time consuming. E+ can model using similar methods to eQuest and can use interior windows to allow light to pass from an exterior zone to the next zone to the interior.</div>
</div><div class="gmail_extra"><br clear="all"><div>Jason Quinn<br>+64 21 1846 911<br></div>
<br><br><div class="gmail_quote">On Fri, Apr 26, 2013 at 3:07 AM, noa@gbwawa <span dir="ltr"><<a href="mailto:noa@gbwawa.com" target="_blank">noa@gbwawa.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Are you sure about that?<br>
How about natural lighting? Does it calculate it?<br>
<div class="im"><br>
-----Original Message-----<br>
From: Daniel Knapp [mailto:<a href="mailto:danielk@arborus.ca">danielk@arborus.ca</a>]<br>
Sent: Thursday, April 25, 2013 4:59 PM<br>
To: noa@gbwawa<br>
Cc: <a href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a><br>
Subject: Re: [Equest-users] defining the windows for natural ventilation<br>
<br>
</div><div class="im">Hi Noa,<br>
<br>
My understanding is that eQuest does not calculate natural ventilation at<br>
all. The program is not designed to support calculations of the movement of<br>
air between zones. The outdoor air flow in the HVAC window is outdoor air<br>
introduced by the mechanical system and not through windows. I think you<br>
would be better off looking to another tool (maybe EnergyPlus/OpenStudio?)<br>
that explicitly supports these calculations.<br>
<br>
All the best,<br>
Dan<br>
<br>
<br>
-<br>
</div>Daniel Knapp, PhD, P Phys, LEEDR AP O+M<br>
<div class="HOEnZb"><div class="h5"><a href="mailto:danielk@arborus.ca">danielk@arborus.ca</a><br>
<br>
Arborus Consulting<br>
Energy Strategies for the Built Environment <a href="http://www.arborus.ca" target="_blank">www.arborus.ca</a><br>
76 Chamberlain Avenue<br>
Ottawa, ON, K1S 1V9<br>
Phone: <a href="tel:%28613%29%20234-7178%20ext.%20113" value="+16132347178">(613) 234-7178 ext. 113</a><br>
Fax: <a href="tel:%28613%29%20234-0740" value="+16132340740">(613) 234-0740</a><br>
<br>
<br>
<br>
<br>
On 2013-04-24, at 11:12 AM, noa@gbwawa <<a href="mailto:noa@gbwawa.com">noa@gbwawa.com</a>> wrote:<br>
<br>
> Hi all,<br>
><br>
> I just understood that e-Quest dosn't calculate natural ventilation<br>
without making some definitions.<br>
> I found that in the detailed mode, in the HVAC window, I can define the<br>
outdoor air flow, but how do I define what is the area of the window that<br>
opens? It could be only half of the window area or all of it for example.<br>
> So what are the parameters that I need to fill out in order to be exact in<br>
the natural ventilation definition? And where could I find it?<br>
><br>
> Thank you<br>
><br>
> Noa Hakak,<br>
><br>
> Green building project manager<br>
> WAWA<br>
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</div></div></blockquote></div><br></div>