ASPE Hot water Demand for Fixtures
ASPE Hot water Demand for Fixtures
(OP)
I have been in the engineering business for 30 years. Specifically, plumbing. In the ASPE Data Book (pick any year), the hot water demand for showers in Gymnasiums, Industrial Plants, Schools and YMCA's has been declared 225 GPH. When will this number be corrected? IPC limits the flow for showers to 2.5 GPM at 80 PSI. 2.5 x 60 = 150 GPH.
Where did 225 come from? Who uses this number in their water heater calculations?
Where did 225 come from? Who uses this number in their water heater calculations?





RE: ASPE Hot water Demand for Fixtures
I use a much lower number which takes into account that you will not be running the shower for an entire hour and only a part of the water is hot.
But I do use the demand factor and the storage capacity factor that ASPE gives. They give pretty good numbers which accounts for diversity among the total number of fixtures and the facility needs.
RE: ASPE Hot water Demand for Fixtures
RE: ASPE Hot water Demand for Fixtures
They are waiting for somebody to give them money to do the research since they cannot seem to come up with the money on their own.
IMHO they need to fix Hunter's curve before they do anything else. That information dates back to the 50's if I am not mistaken.
RE: ASPE Hot water Demand for Fixtures