| 摘要 |
PROBLEM TO BE SOLVED: To provide a waste heat recovery device capable of suppressing deterioration of waste heat recovery efficiency.SOLUTION: A waste heat recovery device 1 includes: a Rankine cycle device 10 having a working medium pump 11 for circulating a working medium M, and a condenser 14 for cooling and condensing the working medium M; a low temperature heat source section 20 having a cooling water pump 22 allowing cooling water W to flow to the condenser 14; and a control section 40 for controlling an output flow rate Qof the cooling water pump 22. The control section 40 decreases the output flow rate Qof the cooling water pump 22 at a first decrease rate when the cooling water pump 22 is driven and temperature inversion that a saturation temperature Tof the working medium M in the condenser 14 falls below a temperature Tof the working medium M flowing into the working medium pump 11 is estimated, and increases the output flow rate Qof the cooling water pump 22 at a first increase rate when the cooling water pump 22 is stopped and temperature inversion is estimated.SELECTED DRAWING: Figure 1 |
