[Equest-users] HP and DOAS

Caleb Bulow cbulow at prengr.net
Tue Apr 13 07:38:09 PDT 2010


I really need some help ASAP on this.

 

I have a geothermal HP system and am comparing it to an air-2-air HP
system, per ASHRAE 62.1.  My cooling energy usage on the GSHP's are
significantly higher than the air-2-air HP and this despite higher EER
for the GSHP.  Why is this?  Is there some pumping being added into the
GSHP?  It appears the pumps are separate on the Monthly Energy
Consumption report.

 

I am set up a DOAS and each HP receives its fresh air from the DOAS
system, yet the DOAS shows zero loads for cooling and heating in the
SS-A System Loads Summary report.  This despite the warning I have in
the ATTN report that the System DOAS may have inadequate cooling
capacity.  The summary report shows the full amount of CFM for the DOAS,
and also shows the capacity.

 

Thanks.

 

Caleb Bulow

  PRAIRIE ENGINEERING, P.C.

720 WESTERN AVE

MINOT, ND 58701

 P. (701) 852-6363

 F. (701) 839-7085

 

 

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