I am modeling a dormitory for EAc1 in version 3.60. I've calculated the
peak DHW load by using the flow rate of all of the fixtures on the hot
water loop (410 gpm). I have a schedule that accounts for the vacant
periods during the breaks and reduced usage in the summer when the
building is partially occupied. When I use the 410 gpm rate as the
process flow the energy consumption for hot water is astronomically
high.

What fact do I need to apply to the calculated flow rate to get
realistic results?

Thanks

Tom Butler, LEED(r) AP