求助解决方法

长脖子大象

Aspen运算出现如下错误如何解决？
Block: H4       Model: HEATER
      PARAMETERS OF RKS EQUATION OF STATE ARE MISSING.
      TC IN DATA SET    1 IS MISSING FOR NH6PO4;
      A NOMINAL VALUE OF   507.40     K HAS BEEN ASSUMED.
      PC IN DATA SET    1 IS MISSING FOR NH6PO4;
      A NOMINAL VALUE OF  0.29688E+07 PA HAS BEEN ASSUMED.
      OMEGA IN DATA SET    1 IS MISSING FOR NH6PO4;
      A NOMINAL VALUE OF  0.29600     HAS BEEN ASSUMED.
      ZRA IN DATA SET    1 IS MISSING FOR NH6PO4;
      A NOMINAL VALUE OF  0.31470     HAS BEEN ASSUMED.
  ****PROPERTY PARAMETER ERROR
      ERRORS ENCOUNTERED IN CALCULATION OF VAPOR MIXTURE PROPS USING
      OPTION SET RK-SOAVE FOR PHIMX
! Calculations stopped because of missing  property parameters

ftecagan247

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