[bldg-sim] equest recovery

[Andy Lau]

Of course one cannot say conclusively what is happening here, but my
work with heat recovery systems has shown that they often increase
cooling energy for two reasons:

1.  They can eliminate the possibility of operating an air-side
economizer and getting "free-cooling."
2.  The fan power associated with heat recovery can be significant,
which will also increase cooling load.

I attach a paper that was presented at Simbuild 2004 on this subject 
(not attached to bldg-sim because it exceeds allowable size)

Andy Lau, P.E.
7group, www.sevengroup.com

fernando varela wrote:
> Hello:
>
> I'm trying a Packaged VAV system with exhaust recovery, and 
> surprisingly, when I add a recuperator, cooling consumption increases, 
> instead of reducing!! Can anybody explain this to me?????
>
> Thank you.
>
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