[BLDG-SIM] equest - select eir & hir questions
Kevin Kyte
kkyte at robsonwoese.com
Thu Nov 29 07:31:23 PST 2007
I need to be schooled in electric input ratio and heat input ratio for all
equipment types: Airside and waterside.
Airside - packaged units: Where does one find a COP for a DX cooling unit?
I have only seen SEER or EER. Then I have seen this equation from archive
files,
Cooling EIR = 0.941 * (1/(SEER/3.413)). Is this the correct equation? It
was taken from the link:
http://www.gard.com/ml/bldg-sim-archive/msg01626.html.
How about conversion of EER to SEER? I think I understand HIR = btu
input/btu output?
Waterside - chillers: chiller EIR = 1/ COP, I was also told EIR = chiller
kW *3413 / capacity. Is this the same, which is correct?
HIR = heat input/ cooling capacity. Isn't COP the Output / input? So
wouldn't HIR be 1/ COP then. This is quite confusing and going nowhere for
me, would someone please clarify.
Kevin Kyte, LEED AP
Jr. Mechanical Engineer
RobsonWoese, Inc.
T: 716-636-1800
F: 716-636-1856
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