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  1. #1
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    Apr 2017
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    PHE & Cooling Tower Requirement for Genset



    Hi all..

    My name is ikky and I am from indonesia..
    I have no idea how to calculate PHE flow and temperature for Cooling tower. The objective are selecting PHE and cooling tower for genset for my design..
    If :
    - Genset capacity : 2000 kVA
    - Genset heat rejection to coolant : 60816 BTU/min
    - Coolant Flow : 436 GPM
    - Standard Thermostat (modulating) Range Degree F : 160~185
    - Maximum Coolant Temperature at Engine Outlet Degree F : 208
    - Genset unit without Radiator.

    As Formula : Q = mc(Delta)T
    and result, (delta)T = 5,123x10^-17 'C

    But, as I know, difference temperature from genset and from Cooling tower is not 1.

    Thank you for your help.



  2. #2
    Join Date
    Apr 2017
    Location
    Spain
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    Re: PHE & Cooling Tower Requirement for Genset

    Hi ikky,

    assuming the genset coolant is oil grade 40 (density ~800 kg/m3 and specific heat ~2,1 kJ/kg.K) your dT is close to 22 K. Anyway, it would be best if you share the oil properties and the oil inlet temperature.

    Regards

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