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. 2019 Jun 23;21(6):619. doi: 10.3390/e21060619
Q˙ heat transfer rate, kW
W˙ power, kW
T temperature, °C
V˙ volume flow rate, m3/h
m˙ mass flow rate, kg/s
h enthalpy, kJ/kg
Greek symbols
ηis,turb isentropic efficiency of turbine
ηgros gross generating efficiency of ORC system
ηelec-mech electromechanical efficiency of generator unit
ηover_tg overall efficiency of integrated turbine and generator unit
ηcarn Carnot efficiency
Subscripts
1–12 state points
hw hot water
wf working fluid
cw cooling water
preh preheater
evap evaporator
turb turbine
cond condenser
pump pump