The short answer is that every building is different, and there is no "typical" model that will fit them all.<div><br></div><div>As you mentioned, the ratio between lighting/cooling/heating changes depending on the size of the building. I'm willing to guess that this is because the core zones that have very little need for heat get much larger in relation to the perimeter zones. Also, the building energy needs will change depending on orientation and global location.</div>
<div><br></div><div>I would suggest that you take a slightly different approach - try to come up with values that are representative for different types of spaces. You might do say:</div><div><br></div><div>1. A perimeter office space with XX% glazing (run for North, East, South and West exposures)</div>
<div>2. A core office space with no skylights</div><div>3. A core office space with XX% of roof area as skylights</div><div>4. A core manufacturing space???</div><div>5,6,7....</div><div><br></div><div>Run each model in the applicable climate. Then, if you have an office building that is 70% core and 30% perimeter space, you'll have a better understanding of the building. This is still a very rough approximation, but should get you farther than trying to model one "typical" building.</div>
<div><br></div><div>--</div><div>Karen</div><div><div><br></div><div><br><br><div class="gmail_quote">On Mon, Apr 9, 2012 at 4:57 PM, Stefano Moret <span dir="ltr"><<a href="mailto:smoret@ucdavis.edu">smoret@ucdavis.edu</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div lang="EN-US" link="blue" vlink="purple">
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<p class="MsoNormal">Dear all,<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">I've recently played around quite a bit with E-quest to simulate the effect of dynamic fenestration on building energy consumption.
<u></u><u></u></p>
<p class="MsoNormal">For these simulations I've been using a very simple office model with a skylight on the top as a test-bed for my calculations (with default system for HVAC and daylighting controls with dimming for lights) but, observing the values I'm
obtaining in output, I see that the values I obtain for lighting, cooling and heating consumption make sense relatively, i.e. if compared to themselves in different conditions, but are sometimes of totally different order of magnitude if compared to each other
(lighting/cooling loads are often much higher than heating, by orders of magnitude), especially when scaling up the model to bigger sizes. This way, it's very difficult to see the effect of a variable change on the total energy consumption.
<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">I know the model I'm using is very idealized, but is there any variable that I can act on in order to obtain a model which has energy consumption values more similar to a real building? For example, is there a "suggested" size of the building
that gives better results? Or maybe simulating a single room in a large building gives more realistic results than the single room alone?
<u></u><u></u></p>
<p class="MsoNormal">My point is that I would like to have a model whose results in scale might be consistent when applied to bigger buildings.
<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Thanks for your hints and suggestions, <u></u><u></u></p>
<p class="MsoNormal">Stefano<u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:12.0pt"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt">--<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt">Stefano Moret<br>
<a href="http://cltc.ucdavis.edu/" target="_blank"><span style="color:blue">California Lighting Technology Center</span></a><br>
University of California, Davis<br>
633 Pena Drive<br>
</span><span style="font-size:12.0pt">Davis, CA 95618<br>
<br>
</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:12.0pt"><a href="tel:530-747-3846" value="+15307473846" target="_blank">530-747-3846</a></span><span style="font-size:12.0pt"><br>
<span style><a href="mailto:smoret@ad3.ucdavis.edu" target="_blank"><span style="color:blue">smoret@ucdavis.edu</span></a></span></span><span style="font-size:12.0pt">
</span><span style="color:#1f497d"><u></u><u></u></span></p>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
</div>
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