the operating mode model of the 2d stream to express the relation between enthalpy rate, mass rate and specific enthalpy
(Forall (?Self ?Time) (=> (Active ?Time 2d-Stream-Enthalpy-Rate ?Self) (= (Lambda (?T) (If (= ?T ?Time) (Value-At (Enthalpy-Rate (2d-Stream-Involved ?Self)) ?T))) (* (Lambda (?T) (If (= ?T ?Time) (Value-At (Mass-Rate (2d-Stream-Involved ?Self)) ?T))) (Lambda (?T) (If (= ?T ?Time) (Value-At (Specific-Enthalpy (2d-Stream-Involved ?Self)) ?T))))))) (Forall (?Self ?Time) (<=> (Active ?Time 2d-Stream-Enthalpy-Rate ?Self) (And (2d-Stream-Enthalpy-Rate ?Self) (Active ?Time 2d-Stream-Operating-Mode ?Self))))
(Forall (?Self ?Time) (=> (Active ?Time 2d-Stream-Enthalpy-Rate ?Self) (= (Lambda (?T) (If (= ?T ?Time) (Value-At (Enthalpy-Rate (2d-Stream-Involved ?Self)) ?T))) (* (Lambda (?T) (If (= ?T ?Time) (Value-At (Mass-Rate (2d-Stream-Involved ?Self)) ?T))) (Lambda (?T) (If (= ?T ?Time) (Value-At (Specific-Enthalpy (2d-Stream-Involved ?Self)) ?T))))))) (Forall (?Self ?Time) (<=> (Active ?Time 2d-Stream-Enthalpy-Rate ?Self) (And (2d-Stream-Enthalpy-Rate ?Self) (Active ?Time 2d-Stream-Operating-Mode ?Self))))