MARINE ELECTRIC POWER GENERATION SET

Japanese Patent JPS5749005

A

PURPOSE:To control a drum pressure in a discharge gas economizer in reference to a predetermined value by a method wherein a thermal energy of exhaust gas from a main engine is completely recovered, a power value is always responded instantaneously to a variation of power load spent in the ship so as to keep the frequency of the system constant. CONSTITUTION:The ship is provided with a propeller 1 driven by a shaft of a power generator 2 operated by the main engine which is directly connected to the main engine 3, and the exhaust gas from the main engine 3 is discharged from a fumel 4 having an economizer 5 therein. Steam produced by the economizer 5 performs a work in an exhaust gas steam turbine 8 so as to operate an exhaust gas turbo power generator 9. During this operation, a power E of said power generator 9 which may be generated is measured by a contrl unit 17 in response to a volume of evaporation in the economizer 5. When the power E is equal to a demand power Ea for the ship, the power generator 2 is operated under no load, the power is supplied by the power generator 19. In turn, when a relation between E and Ea is E>Ea, the power generator 2 is operated as an electric motor, and to the contrary when a relation between E and Ea is E