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Abstract

A power generation system that has an increased power generation efficiency and can be substituted for a conventional heat exchanging system is provided. A power generation system 1 comprises a power generation module 2 provided with one or more thermoelectric elements 7A, 7B; a heat exchanger 3; a high-temperature fluid passage 4 including a high-temperature fluid inlet 4A and a high-temperature fluid outlet 4B, the high-temperature fluid passage being connected to the power generation module and the heat exchanger both located between the high-temperature fluid inlet and the high-temperature fluid outlet; and a low-temperature fluid passage 5 including a low-temperature fluid inlet 5A and a low-temperature fluid outlet 5B, the low-temperature fluid passage being connected to the power generation module and the heat exchanger both located between the low-temperature fluid inlet and the low-temperature fluid outlet. The low-temperature fluid passage includes a low-temperature-side bypass passage 5F for bypassing the power generation module, and a low-temperature-side flow rate adjusting valve 50 for adjusting a flow rate of the low-temperature fluid flowing into the power generation module, and a degree of opening of the low-temperature-side flow rate adjusting valve is controlled based on a temperature difference between the high-temperature fluid and the low-temperature fluid immediate after flowing out of the high-temperature fluid outlet and the low-temperature fluid outlet.

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First Claim