Patent ID: 9598164
Date: 2017-03-21
CPC Classifications: B63J,F01K,F02G,F22B,Y02E,Y02T

Claim:
1. A waste heat recovery system for a vessel for supplying, to a plurality of scroll expanders, steam generated by a heat exchanger, using waste heat from a main machine as a heat source, comprising: an electronic controller wherein the plurality of scroll expanders are connected in parallel to one another, the steam is supplied individually to the plurality of scroll expanders by opening or closing of gate valves arranged in the respective scroll expanders, each of the plurality of scroll expanders has a different capacity than each of the other scroll expanders of the plurality of scroll expanders, and the electronic controller is programmed to control such that: a gate valve is opened or closed such that flow volume of the steam is included, at a combination in which a number of scroll expanders is minimized, in a range between a lower limit value and an upper limit value of an allowable supply amount that is determined from the combination of the scroll expanders where the steam is supplied.