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<FONT face=Tahoma size=2><B>From:</B> Chien Si Harriman<BR><B>Sent:</B> Thu 21/02/2008 21:46<BR><B>To:</B> bldg-sim@lists.onebuilding.org<BR><B>Subject:</B> <BR></FONT><BR></DIV>
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<DIV><FONT face=Arial color=#000000 size=2>Hi there-</FONT></DIV>
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<DIV><FONT face=Arial size=2>I've been tasked with modeling a parallel fan powered box as my baseline system for ASHRAE 90.1 Appendix G, and basically I am wondering if there is anyone who knows of modeling guidelines for that FPB? I have the capability of modeling any sort of conditions I would like, so I can vary the flow rate of the recirc air, the control sequencing of the fan-assist, and even whether that fan is variable volume or constant volume.</FONT></DIV>
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<DIV><FONT face=Arial size=2>I can't find any guidelines that exist anywhere on this topic in ASHRAE 90.1, and this is the first time I've had to model it (I've never designed an electrically-heated building before). Does anyone know whether:</FONT></DIV>
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<DIV><FONT face=Arial size=2>1.) There is a specific ratio for the amount of recirc air to minimum primary air?</FONT></DIV>
<DIV><FONT face=Arial size=2>2.) Whether the amount of recirc air should vary (ie-a variable speed fan)?</FONT></DIV>
<DIV><FONT face=Arial size=2>3.) You can just use a real FPB with data from a company like Carrier, and just call it a day on the simultion effort?</FONT></DIV>
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<DIV><FONT face=Arial size=2>Any guidance would be really helpful.</FONT></DIV>
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<DIV><FONT face=Arial size=2>Thanks in advance,</FONT></DIV>
<DIV><FONT face=Arial size=2>Chien Harriman</FONT></DIV></DIV></BODY></HTML>