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  1. OMG Issue

SYSPHS12 — The restriction of "vapor" to the range 0..1 in EvaporationCalculation2 seems completely arbitrary

  • Key: SYSPHS12-26
  • Status: open  
  • Source: Webel IT Australia ( Dr. Darren Kelly)
  • Summary:

    The restriction of "vapor" to the range 0..1 in EvaporationCalculation2 seems completely arbitrary, it is not a ratio. Dimensional analysis and the names of conversion parameters and related value properties indicate it's a volumetric flow rate:

    p.92 Figure 79: Humidifier constraint blocks

    p97 Figure 91: Parametric diagram applying the second evaporation calculation constraint

    {vapOut=g*(((max(min(vapor,1),0))*max((temp-boil),0)/(temp-boil))+np(max((boil-temp),0)/(boil-temp)))}
    

    This part is not necessary:

    max(min(vapor,1),0)
    
  • Reported: SysPhS 1.1 — Sat, 27 Feb 2021 11:42 GMT
  • Updated: Wed, 3 Mar 2021 00:47 GMT