hot water generation

[mechanicaldup]

Where can I find hot water generation guides (not steam).
Application: central hot water system for large buildng.
It will be a electrical system

 

[TBP]

I'm assuming that by "electical" you mean electric boilers.

Whether it's for domestic hot water or building heating, once you know how many BTU/hr the system needs, all the individual bits can be selected. ASHRAE will have tons of info, as will manfacturers of the various components.

 

[mechanicaldup]

THKS TBP

yes electric geysers.

What ASHRAE code specific?

 

[TBP]

The building system already exists and you just need boiler info for a retrofit option? I don't normally get too involved with the ASHRAE end of things (I do mostly industrial) so I just have some odds and ends of their literature. If you know the GPM of water circulating in the heating system, and the inlet & outlet temp across the boiler, then:

BTU/hr (boiler output) = GPM X 500 X delta-T

Then you would just flip the BTU into kW for electric boiler output. They're almost 100% eff, so input & output will be nearly the same.