Components

Organic Rankine Cycle

Energy equations

Exergy equation

Pump 1

η P u m p 1 = w s w A = h 2 s h 1 h 2 h 1

W P u m p 1 = m ˙ 1 ( h 2 h 1 )

E ˙ 1 + W ˙ p u m p 1 E ˙ 2 = E ˙ D e s t r u c t i o n

Pump 2

η P u m p 2 = w s w A = h 5 s h 3 b h 5 h 3 b

W P u m p 2 = m ˙ 5 ( h 5 h 3 b )

E ˙ 3 b + W ˙ p u m p 2 E ˙ 5 = E ˙ D e s t r u c t i o n

Condenser

m ˙ c o o l i n g ( h 13 h 12 ) = m ˙ 11 ( h 11 h 1 )

Q ˙ E c o n = m ˙ 11 ( h 11 h 1 )

E ˙ 11 + E ˙ 12 E ˙ 1 E ˙ 13 = E ˙ D e s t r u c t i o n

Superheater

m ˙ 14 ( h 14 h 15 ) = m ˙ 8 ( h 8 h 7 )

Q ˙ S u p e r H = m ˙ 8 ( h 8 h 7 )

E ˙ 14 + E ˙ 7 E ˙ 15 E ˙ 8 = E ˙ D e s t r u c t i o n

HP Evaporator

m ˙ 15 ( h 15 h 16 ) = m ˙ 6 ( h 7 h 6 )

Q ˙ H P _ E v a p = m ˙ 6 ( h 7 h 6 )

E ˙ 15 + E ˙ 6 E ˙ 7 E ˙ 16 = E ˙ D e s t r u c t i o n

HP Turbine

η H P _ t u r b = w A w s = h 8 h 9 h 8 h 9 s

W H P _ t u r b = m ˙ 8 ( h 8 h 9 )

E ˙ 8 W ˙ H P _ t u r b E ˙ 9 = E ˙ D e s t r u c t i o n

Preheater 1

m ˙ 18 ( h 18 h 19 ) = m ˙ 3 ( h 3 h 2 )

Q ˙ p r e H 1 = m ˙ 3 ( h 3 h 2 )

E ˙ 18 + E ˙ 2 E ˙ 19 E ˙ 3 = E ˙ D e s t r u c t i o n

LP Evaporator

m ˙ 17 ( h 17 h 18 ) = m ˙ 4 ( h 4 h 3 a )

Q ˙ L P _ E v a p = m ˙ 4 ( h 4 h 3 a )

E ˙ 17 + E ˙ 3 a E ˙ 18 E ˙ 4 = E ˙ D e s t r u c t i o n

LP Turbine

η L P _ t u r b = w A w s = h 10 h 11 h 10 h 11 s

W L P _ t u r b = m ˙ 10 ( h 10 h 11 )

E ˙ 10 W ˙ L P _ t u r b E ˙ 11 = E ˙ D e s t r u c t i o n

Preheater 2

m ˙ 16 ( h 16 h 17 ) = m ˙ 5 ( h 6 h 5 )

Q ˙ p r e H 2 = m ˙ 5 ( h 6 h 5 )

E ˙ 16 + E ˙ 5 E ˙ 17 E ˙ 6 = E ˙ D e s t r u c t i o n