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  1. #1
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    the compressor's cooling capacity difference from Bitzer selction software



    Hi,all
    The bitzer software, under 2-stage semi-herm. reciprating compressor, they have two cooling capacity data, Qo & Qo*, and they are different.

    What's the differnce between them? The Bitzer's paper catolog always list Q0*, so what's the fuction of Qo?

    Thanks

    bitzer software 01.jpg



  2. #2
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    Re: the compressor's cooling capacity difference from Bitzer selction software

    Different standards of calculation by the look of things, the Qo* is calculated to EN 2900 standards.


  3. #3
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    Re: the compressor's cooling capacity difference from Bitzer selction software

    Then what the standard for the Qo? what's Qo used for?

    Regards
    Jiazi

  4. #4
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    Re: the compressor's cooling capacity difference from Bitzer selction software

    The first is with the inputs you gave in and the second wit asterisk is calculated using the EN2900 standard, mostly other SH and SC than you specified in your inputs; EN2900 uses standard values.
    Last edited by Peter_1; 20-09-2013 at 02:43 PM.
    It's better to keep your mouth shut and give the impression that you're stupid than to open it and remove all doubt.

  5. #5
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    Re: the compressor's cooling capacity difference from Bitzer selction software

    Thank you all for your kindly input

  6. #6
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    Re: the compressor's cooling capacity difference from Bitzer selction software

    While selecting compressor maintainthe diffrence between evaporating & suction gas temp at about 20.

    Dd koranne

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