the system consisting of an open feedwater heater, an associated control-volume, and an adiabatic mixing process.
the control volume associated with the closed feedwater heater in the system
the closed feedwater heater
the adiabatic heat-exchange
(Forall (?Self ?Time) (<=> (Active ?Time 2-2-Closed-Feedwater-Heater-System ?Self) (And (2-2-Closed-Feedwater-Heater-System ?Self) (Active ?Time System-Model ?Self)))) (=> (2-2-Closed-Feedwater-Heater-System ?Self) (And (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))))