C	(kW/K)	Heat capacity
cp	(kJ/(kg K))	Specific heat
Ex	(kW)	Exergy
H	(kJ)	Enthalpy
m	(kg/s)	Mass flow rate
Q	(kW)	Heat flow rate
R	(-)	Ratio of warm seawater heat-source Heat capacity
S	(kJ/(kg K))	Entropy
T	(K)	Temperature
ΔT	(K)	Temperature difference
ΔTHS	(K)	${\left(\sqrt{T_W}-\sqrt{T_C}\right)}^2$
Greek Symbols
η	(%)	Efficiency
Subscripts
C	Cold deep seawater
CA	Curzon-Ahlborn
Car	Carnot cycle
d	Transferable
H	High-temperature working fluid temperature on heat engine
HS	Heat source
L	Low-temperature working fluid temperature on heat engine
loss	Lost thermal energy (defines as the difference from the equilibrium state)
N	Number of stage
Nor	Normalized
m	Maximized
O	Outlet
opt	Optimum
rev	Reversible
th	Thermal
W	Warm surface seawater