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Does the pressure of water in coountercurrent heat exchangers affect the refrigerating rate?

Is known that the pressure the water is at while in contact with the metal pipes interiors do not affect the heat transfer properties of it, neither enter the calculation of heat transfer in that case (of an industrial system), but the thing is: does the pressure of the water affect directly the flow of the water entering and exiting the heat exchanger, increasing the velocity that the water is flowing into it and decreasing the time that the water molecules are in contact with the metal ?


  • Jamie Hall
    Jamie Hall Member Posts: 22,180
    Not the pressure. The pressure differential between the inlet and outlet is directly related to the flow rate. Pressure -- by itself -- has nothing to do with it.
    Br. Jamie, osb
    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England
    EBEBRATT-Ed Member Posts: 14,560
    Some say more flow and turbulent velocity will increace heat transfer, some say less flow and the water will exchange more heat.

    I have never herd a good explanation of the difference.

    Pressure in and of itself should have no affect