v0.0.1b4

Available in version 0.0.1b4

• PFR (Border and initial value problems)
  • Mass Balances
    • MolarFlow
  • Energy Balances
    • Isothermic
    • Adiabatic
    • No isothermic (constant U coefficient and refrigerant temperature)
    • No isothermic (constant U coefficient)
  • Pressure Balances
    • Isobaric
    • Ergun