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...or see the ASHRAE Handbook of Fundamentals (2001), pages 26.24-26,
which summarizes the results of the same ASHRAE research
project.<br><br>
One of the difficulties of dealing with doors is the large difference in
leakage area between when they are open and closed and determining how
much of the time they are opened.<br><br>
My first guess would be that a revolving door is easier to estimate
because there is always a seal and a relatively small amount of outside
air would be transferred by leakage or in bulk due to the rotation of the
door.<br><br>
Bill Bahnfleth<br><br>
At 03:43 PM 5/20/2004, David Yuill wrote:<br>
<blockquote type=cite class=cite cite=""><font face="arial" size=2 color="#000080">Ahmad,<br>
<br>
A significant portion of energy loss through a door is air leakage.
I am aware of a study that examined this issue for automatic
doors:</font> <font face="arial" size=2 color="#000080">“Air
Leakage Through Automatic Doors,” G. K. Yuill, Rebecca Upham, and Chen
Hui, ASHRAE Transactions, V106, Pt 2, 2000. This might be a
starting point.<br>
<br>
Regards,<br>
<br>
David Yuill<br>
<br>
<br>
<br>
</font><font face="tahoma" size=2>-----Original Message-----<br>
<b>From:</b> postman@gard.com
[<a href="mailto:postman@gard.com" eudora="autourl">mailto:postman@gard.com</a>]
<b>On Behalf Of </b>Ahmed Fraij<br>
<b>Sent:</b> Wednesday, May 19, 2004 3:08 AM<br>
<b>To:</b> BLDG-SIM@gard.com<br>
<b>Subject:</b> [BLDG-SIM] Energy losses through outside doors<br>
</font><font face="Times New Roman, Times"> <br>
Dear All,<br>
<br>
I have a case in which an owner of a building
needs to know which type of outside doors will be more energy efficient
(i.e. which type is more effective to reduce the load of the Air
Conditioning system).<br>
<br>
He asked me about three door types: Automatic sliding
doors, rotating doors and hinged doors. <br>
<br>
So, can anyone provide me with a method to calculate the
energy losses through each type? or is there any study that has been made
for such case?<br>
<br>
Your help will be highly appreciated<br>
<br>
Thanks & Best Regards<br>
<br>
Ahmad Fraij<br>
<br>
</font><br>
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<br>
<div>_________________________________________________</div>
<br>
<div>William P. Bahnfleth, Ph.D.,
P.E.
</div>
<div>Associate Professor</div>
<div>Director, Indoor Environment Center</div>
<div>
</div>
<div>Department of Architectural Engineering </div>
<div>The Pennsylvania State University </div>
<div>104 Engineering Unit A</div>
<div>University Park, PA 16802 USA</div>
<br>
<div>voice: 814.863.2076 / fax: 814.863.4789 </div>
<div>e-mail: wbahnfleth@psu.edu</div>
<div><a href="http://www.arche.psu.edu/faculty/WBahnfleth/" EUDORA=AUTOURL>www.arche.psu.edu/faculty/WBahnfleth/</a></div>
_________________________________________________
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