a two-input two-output closed heater, which is a shell-and-tube-type recuperators in which the feedwater temperature increases as the extracted stream condenses on the outside of the tubes carrying the feedwater
(Forall (?Self ?Time) (<=> (Active ?Time 2-2-Closed-Feedwater-Heater ?Self) (And (2-2-Closed-Feedwater-Heater ?Self) (Active ?Time 2-2-Port-Thermal-Component ?Self) (Active ?Time Heat-Exchanger ?Self))))
(Forall (?Self ?Time) (<=> (Active ?Time 2-2-Closed-Feedwater-Heater ?Self) (And (2-2-Closed-Feedwater-Heater ?Self) (Active ?Time 2-2-Port-Thermal-Component ?Self) (Active ?Time Heat-Exchanger ?Self)))) (Inherited-Facet-Value Slot-Value-Type 2-2-Closed-Feedwater-Heater-System Cls-Fwt-Htr 2-2-Closed-Feedwater-Heater) (=> (2-2-Closed-Feedwater-Heater-System ?Self) (And (Value-Cardinality ?Self Cls-Fwt-Htr 1) (Value-Type ?Self Cls-Fwt-Htr 2-2-Closed-Feedwater-Heater) (Value-Cardinality ?Self Cls-Fwt-Htr 1) (Value-Cardinality ?Self Chtr-Cv 1) (Value-Type ?Self Chtr-Cv 2-2-Control-Volume) (Value-Cardinality ?Self Chtr-Cv 1) (Value-Cardinality ?Self Ht-Xchg-Prcs 1) (Value-Type ?Self Ht-Xchg-Prcs Steady-Flow-Adiabatic-Heat-Exchange) (Value-Cardinality ?Self Ht-Xchg-Prcs 1) (Cv-Component (Chtr-Cv ?Self) (Cls-Fwt-Htr ?Self)) (Component-Cv (Cls-Fwt-Htr ?Self) (Chtr-Cv ?Self)) (Process-Cv (Ht-Xchg-Prcs ?Self) (Chtr-Cv ?Self)))) (=> (Cls-Fwt-Htr $X $Y) (2-2-Closed-Feedwater-Heater $Y))