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