| 摘要 |
PROBLEM TO BE SOLVED: To improve heat-electricity conversion efficiency by controlling a flow passage as to allow a heat source fluid body to enter an inlet near an outlet as the temperature of the fluid body drops. SOLUTION: The outlet 11 of a heat source fluid body is provided on the bottom on one side of a cylindrical heat sink, and then thermoelectric generating modules 12, 13 and 14 for low temperature, middle temperature and high temperature are hierarchically installed in sequence from closer side to the outlet 11, on the outer side of the side of the respective cylinders, and they are fixed by water-cooling jackets. Next, a flow passage control valve 16 is controlled so as to allow the heat source fluid body to enter the farthest inlet 15 from the outlet 11 when the temperature of the fluid body is 450 deg.C or higher, a middle inlet when it is between 45 deg.C and 250 deg.C, and the closest inlet 15 to the outlet 11 when it is 250 deg.C or lower, respectively. Thus, a rotary stream or a spiral stream can be formed, thereby improving the thermal conversion efficiency.
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