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    Heat Pump Water Heater and Humidity (8 Posts)

  • Solid_Fuel_Man Solid_Fuel_Man @ 9:29 PM
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    Heat Pump Water Heater and Humidity

    Wondering how RH effects the COP of HPWH.  I'm installing an add-on unit (Geyser) and want to duct it into the living space, for summer cooling.  The master bath is directly above the mechanical room, how will this potential high humidity effect the evaporator's ability to absorb heat from the air?  I was thinking this would be better?
    Taylor
    Always keep learning: observing what works, and what doesn't. Ask questions
  • John Mills John Mills @ 2:55 PM
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    Humidity is heat

    Latent heat. So the more humid the air into the heat pump, the more capacity. 
  • John Mills John Mills @ 2:58 PM
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    BTW

    But, are you sucking air out of the bathroom or blowing cold air into it? If blowing in, where does the air come from? If mechanical room, is there any fuel appliances in it?
  • Solid_Fuel_Man Solid_Fuel_Man @ 10:47 AM
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    Pulling air from bathroom

    and ducting it to the master bedroom, which is on the other side of the partition.  Basically the unit will be in the mechanical room below the floor, pulling air from bath high in partition wall and them pushing the cooler air into bed via floor register. 
    I figured the humidity was latent heat as the phase change would condense the water out and yealdmore heat driving the COP up.  We in this part of the country are just beginning to get into HP tech, so I want to have learn as much as I can.  Install as well and efficient as possible

    Thank you!
    Taylor
    Always keep learning: observing what works, and what doesn't. Ask questions
  • John Mills John Mills @ 12:20 PM
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    Wow

    That's going to be an interesting smelling bedroom at times  
  • Solid_Fuel_Man Solid_Fuel_Man @ 5:50 PM
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    Stink ducting.........

    Nah, I only stink up the 1/2 bath downstairs.  That bath is for showering and going #1 only for me. LOL
    Always keep learning: observing what works, and what doesn't. Ask questions
  • John Mills John Mills @ 12:03 PM
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    Solid fuel

    So the solid fuel stays downstairs, huh?
  • Solid_Fuel_Man Solid_Fuel_Man @ 7:20 PM
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    Not that type of fuel..........

    Haha, biomass is my game.
    Always keep learning: observing what works, and what doesn't. Ask questions
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