negative pressure in water-source heat pump

Discussion in 'Pumps and Tanks Well Forum & Blog' started by tkeoki, Nov 10, 2009.

  1. tkeoki

    tkeoki New Member

    Messages:
    29
    Does anyone know the performance impact of negative pressure in a water-source heat pump? The setup I'm thinking of would cause the pressure through the WSHP to be about -5 to -10 psi.

    Thanks
  2. valveman

    valveman Moderator Staff Member

    Messages:
    4,549
    Location:
    Lubbock, Texas
    I don’t think a siphon effect will draw enough water through for proper heat exchange. You can’t suck water very far but, you can push it a long way. The siphon will reduce the head required and allow the use of a much smaller pump but, I still think you will have to pump some.
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