[Equest-users] Fan Power for GSHP units

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Hi all,

I am modeling a GSHP system for a LEED project. In the proposed model I am
using HVAC System type Water Loop Heat Pump. I am trying to be consistent
with the way I entered the fan power for the baseline - in kw/cfm - but the
box for that is greyed out in the system level spreadsheet for Fans- Fan
Power and in the Zone Level for Zone Fan kW/flow (kW/cfm).

I entered the cooling efficiency for these units as EER so I assume I have
to break out the fan power.

Can anyone help?

Thanks in advance.

Gerry Hazel

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Gerry,

To allow access to the System kW/cfm field, select "Restore Default" in
the "Static in WG" field first. For zone kW/cfm, I don't think zone fan
power is appropriate unless you are trying to model powered induction
unit boxes or some equivalent.

Regards,

Bill

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Joined: 2011-09-30
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My general rule of thumb is that if I want to show a quick comparison of standard technology, for example variable speed chiller vs constant speed chiller, or the chiller is basically a place holder in the model and not important for whatever I am looking at, or I can't get the info from the manufacturer, I use default curves. If I want to compare a turbocore machine vs variable speed screw vs variable speed centrifugal, or Carrier model XXX vs York model XXX, I use custom curves. If you want to use custom curves and haven't done it before, I would recommend downloading the chiller curve document written by Steve Gates and my spreadsheet from the following link:

http://www.esimforums.com/equest/viewtopic.php?f=13&t=116&start=0&view=viewpoll

Jeremy

___________________________________________
Jeremy McClanathan, P.E., BEMP, HFDP, LEED(r) AP BD+C

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Joined: 2011-09-30
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