A large four-stroke cycle stationary V12 diesel engine is to be used as part of a cogeneration system by using the exhaust energy to generate steam. The engine, which has a 14.2- cm bore and 24.5-cm...

A large four-stroke cycle stationary V12 diesel engine is to be used as part of a cogeneration system by using the exhaust energy to generate steam. The engine, which has a 14.2- cm bore and 24.5-cm stroke, runs at 980 RPM with a volumetric efficiency Air–fuel ratio is Steam is generated by running the exhaust through one side of a gas–steam heat exchanger.

Calculate:

(a) Energy made available to generate steam if the exhaust temperature decreases from 577°C to 227°C as it passes through the heat exchanger. [kW]

(b) Saturated steam vapor that can be generated if steam enters the heat exchanger as saturated liquid at 101 kPa.The heat exchanger efficiency is 98% and, for water at 101 kPa, [kg/hr]