<div class="gmail_quote">Hello all</div><div class="gmail_quote">I am working on a 20 storey office building which has 20125 sf per floor.</div><div class="gmail_quote">I have assigned 1 VAV system /floor area.</div><div class="gmail_quote">
<br></div><div class="gmail_quote"><div lang="EN-US" link="blue" vlink="purple"><div>
<p class="MsoNormal">I realized that the return air path plays a big role. When I use plenum return (since I have 4ft plenum in my design), the floor area used by system in SV-A report is 20125 sf which is correct. </p><p class="MsoNormal">
As soon as I change the path to ducted, floor area doubles. </p><p class="MsoNormal">Does anyone know why this is happening?</p><p class="MsoNormal">Any thoughts will be helpful.</p><p class="MsoNormal"><br></p>
<p class="MsoNormal">Thanks </p><p class="MsoNormal">Deepika</p>
<p class="MsoNormal"><font class="Apple-style-span" color="#ff0000"><br></font></p><p class="MsoNormal"><br></p><p class="MsoNormal"> </p>
<p class="MsoNormal"><span style="color:red">Results with return air path as <b>plenum- the floor area is correct with plenum return</b></span></p>
<p class="MsoNormal"> </p>
<p class="MsoNormal"><img width="1018" height="244" src="cid:image008.jpg@01CC7601.CD0F5240"></p>
<p class="MsoNormal"> </p>
<p class="MsoNormal"><span style="color:red"> </span></p>
<p class="MsoNormal"><span style="color:red">Results with return air path as <b>ducted- floor area doubles with changing to ducted</b></span></p>
<p class="MsoNormal"> </p>
<p class="MsoNormal"><img width="981" height="227" src="cid:image009.jpg@01CC7601.CD0F5240"></p>
<p class="MsoNormal"> </p>
<p class="MsoNormal"> </p>
<p class="MsoNormal"> </p></div></div></div>