Water is the working fluid in a vapor power plant. Superheated steam enters the turbine at 18 MPa and 580oC. Steam expands through the turbine, exiting at 6 kPa and the turbine efficiency is 82%. Condensate leaves the condenser at 4.5 kPa, 25oC and is pumped to 18.5 MPa before entering the steam generator. The pump efficiency is 77%. Determine
(a) The heat transfer per unit mass (q) of steam passing through the condenser.
(b) The heat transfer per unit mass (q) of steam passing through the boiler,
(c) The thermal efficiency (ηth) and
(d) The net work per unit mass (wnet) of steam flow,