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  1. #1
    Join Date
    Jun 2016
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    Condensor capacity



    Hi,

    I am sizing a condensor unit based on capacity. Can someone confirm my capacity calculation.

    1. I start with an evaporator capacity of 160kW. With the refrigerant enthalpies and capacity of 160kW I calculate the massflow. Massflow=Capacity_evap / (Enthalpy_out - Enthalpy_in) Units of enthalpy are in kJ/kg

    2. With the massflow calculated in step 1 and the working conditions of the condensor I determine the enthalpies in the condensor. The condensor capacity is then Capacity_cond = Massflow x (Enthalpy_cond_in - Enthalpy_cond_out)

    Is this the right method of determining the required condensor capacity?

    Please let me know many thanks in advance
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  2. #2
    Join Date
    Sep 2003
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    ISRAEL
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    Re: Condensor capacity

    evaporator capacity at designed temp + compressor watt draw + 15% for a warm day.
    Thats the way I do it.

  3. #3
    Join Date
    Jan 2007
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    India
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    Re: Condensor capacity

    I agree with Chemi cool .I consider Evaporator capacity + compressor Power consumption + 10% for losses

  4. #4
    Join Date
    May 2007
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    Auckland
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    Re: Condensor capacity

    I have never been a fan of "Rule of Thumb" calculations, especially if evap loading is 160kws.
    generally use a long and protracted method, especially if located in the Nederlands. Ambient conditions are so varied, summer to winter

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