Results 1 to 6 of 6
  1. #1
    Join Date
    Jun 2013
    Location
    China
    Posts
    6
    Rep Power
    0

    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
    Join Date
    Feb 2007
    Location
    UK
    Posts
    2,479
    Rep Power
    45

    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
    Join Date
    Jun 2013
    Location
    China
    Posts
    6
    Rep Power
    0

    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
    Join Date
    Oct 2003
    Location
    Belgium
    Age
    62
    Posts
    5,645
    Rep Power
    34

    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
    Join Date
    Jun 2013
    Location
    China
    Posts
    6
    Rep Power
    0

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

    Thank you all for your kindly input

  6. #6
    Join Date
    May 2006
    Location
    India
    Age
    74
    Posts
    400
    Rep Power
    18

    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

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •