Dear all,
ASHRAE 90.1 appendix G G.3.1.10 defines the base building pump power. I have basic questions regarding this:
1)??? Is 22w/gpm for both primary and secondary pumps put together??
2)??? The user manual defines 22w/gpm as pump operating against a 75 foot head with 60% combined impellar and motor efficiency.
I work on Visual Doe. I have to input impellar efficiency and motor efficiency separately. How do i input these values?
3)??? If 22w/gpm is including secondary pump, then what will be the head and efficiencies for primary pump and secondary pump?
4)??? The condenser water pump power is 19 w/gpm. What is the head, impellar efficiency and motor efficiency?
Looking forward for your replies.
Regards,
Rathnashree