[Bldg-sim] chilled water pump power

xiao dongyi xiaodongyi at hotmail.com
Thu Jan 8 15:18:08 PST 2009


Hi,
 
I have a question regarding the chilled water pump power calculation in ASHRAE 90.1 Appendix G:
 
ASHRAE 90.1 Appendix G Paragraph G3.1.3.10 requires that "The baseline building design pump power shall be 22 W/gpm.". If the chilled water pumping system is a primary-secondary system, how does this rule apply? i.e. does the 22 W/gpm apply to the primary pump, secondary pump, or both? Or, do I need to divide it between the primary and secondary pump?
 
Your suggestions will be greatly appreciated.
 
Thanks,
 
Dongyi
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