EXHAUST HEAT RECOVERY DEVICE, EXHAUST HEAT RECOVERY TYPE SHIP PROPULSION DEVICE AND EXHAUST HEAT RECOVERY METHOD

摘要

PROBLEM TO BE SOLVED: To recover heat quantity of cooling water whose temperature has increased, as effective energy.SOLUTION: A exhaust heat recovery type ship propulsion device 1 includes: a cooling water circulation flow passage 6 configured to circulate first cooling water for cooling a Diesel engine 3; an ORC (Organic Rankine Cycle) system 2 configured to recover exhaust heat from the first cooling water circulating in the cooling water circulation flow passage 6, and perform power generation with the exhaust heat; and a control device 9 configured to control the ORC system 2 so that heat quantity recovered by the ORC system 2 is increased as the rotational frequency of the Diesel engine 3 increases.SELECTED DRAWING: Figure 1