换热器出了什么问题

阿立

*** SEVERE ERROR IN PHYSICAL PROPERTY SYSTEM
      PARAMETERS OF RKS EQUATION OF STATE ARE MISSING.
      OMEGA IN DATA SET    1 IS MISSING FOR R123;
      A NOMINAL VALUE OF  0.29600     HAS BEEN ASSUMED.

  ****PROPERTY PARAMETER ERROR
      ERRORS ENCOUNTERED IN CALCULATION OF VAPOR MIXTURE PROPS USING
      OPTION SET SRK FOR PHIMX

! Calculations stopped because of missing  property parameters


这么小一个元件，错了，就是找不到原因啊