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Indirect Water Heating

ALH_4
ALH_4 Member Posts: 1,790
in THE MAIN WALL
Is the load intermittent or continuous? I dont know the exact criteria, but 1 million btu/h isn't even close if it's continuous. He might need three (or more) 1,000 MBH input water heaters to handle that. Take the flow rate and multiply it by 500 and then multiply that by the temperature rise. That will tell you the heat output required to keep up with a continuous demand. That 1,000 MBH boiler might carry 12gpm.

Comments

  • Servicewiz_2
    Servicewiz_2 Member Posts: 28
    Indirect Water Heating

    Is there any good Resources out there for indirect domestic water heating.I have a customer who requires 180 degree water at 5 3/4 inch hoses fully open at any time.The customer has purchased a low mass 1 million btu per hour boiler and it seems indirect heating is the way to go.Any help is greatly appreciated!!!
    Servicewiz
  • Empire_2
    Empire_2 Member Posts: 2,340
    SW,...

    May I ask what the application is for such a beast?...

    Mike T.
  • tim smith
    tim smith Member Posts: 2,807
    how long of run time

    It sounds like you need about 50 gpm (if 10gpm per hose) at 130 - 140 degree rise. Is it continuous or intermittent use. I would say you need about 85,000 btu per gpm if no storage and continuous use. And if continuous flow, storage won't do any good. Sooooooo, can you say close to 5 million btu. :) now if you went to direct fired hot water, 98% efficiency, this might drop down close to 4 million. See Ludell heaters as a possibility.
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