Components

Organic Rankine cycle

Cost equations

Auxiliary equation

Pump 1

${\dot{C}}_1+{\dot{C}}_{w,pump1}+{\dot{Z}}_{pump1}={\dot{C}}_2$

Condenser

${\dot{C}}_{11}+{\dot{C}}_{12}+{\dot{Z}}_{cond}={\dot{C}}_1+{\dot{C}}_{13}$

$c_{11}=c_1$ ; $c_{12}=0$

Preheater 1

${\dot{C}}_2+{\dot{C}}_{18}+{\dot{Z}}_{preH1}={\dot{C}}_3+{\dot{C}}_{19}$

$c_2=c_3$ ; $c_{3a}=c_3$

LP Turbine

${\dot{C}}_{10}+{\dot{Z}}_{LP\_turb}={\dot{C}}_{11}+{\dot{C}}_{w,LP\_turb}$

$c_{11}=c_{10}$

$c_{w,LP\_turb}=c_{w,pump1}$

LP Evaporator

${\dot{C}}_{3a}+{\dot{C}}_{17}+{\dot{Z}}_{LP\_evap}={\dot{C}}_4+{\dot{C}}_{18}$

$c_{3a}=c_4$ ; $c_{3a}=c_{3b}$

Preheater 2

${\dot{C}}_5+{\dot{C}}_{16}+{\dot{Z}}_{preH2}={\dot{C}}_6+{\dot{C}}_{17}$

$c_5=c_6$

Pump 2

${\dot{C}}_{3b}+{\dot{C}}_{w,pump2}+{\dot{Z}}_{pump2}={\dot{C}}_5$

${\dot{C}}_{w,pump2}={\dot{C}}_{w,pump2}$

HP Turbine

${\dot{C}}_8+{\dot{Z}}_{HP\_turb}={\dot{C}}_9+{\dot{C}}_{w,HP\_turb}$

$c_9=c_8$ ;

$c_{w,HP\_turb}=c_{w,pump2}$

HP Evaporator

${\dot{C}}_6+{\dot{C}}_{15}+{\dot{Z}}_{HP\_evap}={\dot{C}}_7+{\dot{C}}_{16}$

$c_6=c_7$

Superheater

${\dot{C}}_7+{\dot{C}}_{14}+{\dot{Z}}_{SuperH}={\dot{C}}_8+{\dot{C}}_{15}$

$c_7=c_8$

Mixer

${\dot{C}}_4+{\dot{C}}_9+{\dot{Z}}_{mixer}={\dot{C}}_{10}$

Separator

${\dot{C}}_3={\dot{C}}_{3a}+{\dot{C}}_{3b}$

$c_{3a}=c_{3b}$