In base case, how to calculate bhp/cfm value for AHUs if we know flow (in CFM) & cooling capacity (btu/h) details? In Design Case, if we know CFM & Power (normal - in kW), how to calculate bhp/cfm?
You rely on LEEDuser. Can we rely on you?
LEEDuser is supported by our premium members, not by advertisers.
Go premium for
Marcus Sheffer
LEED Fellow7group / Energy Opportunities
LEEDuser Expert
5915 thumbs up
March 4, 2012 - 10:53 am
There is an Appendix G Fan Power Calculator in the Documentation Toolkit above.
Smart Green
11 thumbs up
March 6, 2012 - 6:56 am
What is the difference between CFMs & CFMd? Please explain.
Marcus Sheffer
LEED Fellow7group / Energy Opportunities
LEEDuser Expert
5915 thumbs up
March 6, 2012 - 9:18 am
Refer to Table 6.5.3.1.1A in ASHRAE 90.1.
"s" is supply. "d" is design air flow.
Smart Green
11 thumbs up
March 7, 2012 - 3:26 am
Dear Marcus,
Thanks for your information.
I am only a beginner in modeling.
Please let me know how to calculate bhp/cfm for design case if we know design CFM & power requirement (in kW).
How to convert to bhp from kW?
Is it hp & bhp same?
Marcus Sheffer
LEED Fellow7group / Energy Opportunities
LEEDuser Expert
5915 thumbs up
March 7, 2012 - 11:14 am
hp x 746 = watts
They are not quite the same. hp is the nominal value and bhp is under actual operating condition.