| abstract |
PROBLEM TO BE SOLVED: To provide a power generation device capable of obtaining high power generation efficiency even when an ambient environmental condition changes and an operation state changes. SOLUTION: A steam generator 10 that evaporates a working medium M by heat exchange with a heating medium H, and an expander that expands the working medium M evaporated by the steam generator 10 and obtains mechanical power via a moving blade. 20, a condenser 40 that condenses the working medium M expanded in the expander 20 by heat exchange with the cooling medium C, a generator 30 that is driven by mechanical power obtained by the expander 20 and generates electric power, A power generation apparatus 1 including a control device 60 that controls the rotational speed of the moving blade so that the ratio of the peripheral speed of the moving blade to the theoretical speed obtained from the heat drop in the expander 20 of the working medium M becomes a predetermined value; Then, even if the surrounding environmental conditions fluctuate, the expander can be operated at a high-efficiency operating point following this, and high power generation efficiency can be obtained. [Selection] Figure 1 |