Important Formulae in Open Systems

 The steady flow energy equation (SFEE) per unit mass is given by

IMPORTANT FORMULAE - OPEN SYSTEMS

(1) The steady flow energy equation (SFEE) per unit mass is given by

(2) SFEE to boiler, Q = h2 – h1 

(3) SFEE to condenser, Q = h1 – h2

(4) SFEE to nozzle,

(5) For turbine, SFEE is given by

W = h1 – h2

(6) For rotary compressor, SFEE is given by

W = h2 – h1 

(7) For reciprocating compressor, SFEE is given by

W = Q + (h2 – h1)