Motor ship steam plant

Were a large quantity of exhaust gas is available for extended periods of time it is economical to make use of the exhaust gas to improve the quality of the steam generated by superheating. This allows for the use of a turbine which connected to a generator can provide electricity. Diesel generators are required as back up in the event of failure. For in port a boiler with an independent superheater will be required.

The steam generator part of the waste heat unit does not generate 100% dry steam at out let. 10% remain as water which carries back any sludge to the boiler where it can be removed. The waste heat unit should have sufficient reserve capacity to allow several minutes of operation after engine load reduction to allow the in port boiler to be flashed.