Abstract
Thermoelectric power generation system using the thermoelectric conversion device can convert the thermal energy between the hot spring and waste water to electric power. The amount of power generation of the device depends on the temperature difference between each surfaces of the device. However, the cold water is sometimes not provided around the hot spring. In this study, we adopted the natural air cooling as a cooling method which does not require the cooling water. We investigate whether the cooling performance is different by various fin positions (top cooling, bottom cooling and side cooling), and optimize it. Experimental apparatus consists of heat sink, peltier device, and rubber heater. The heating temperature was set to 40 ℃. The voltage was measured at various fin positions. As the result of the experiment, it was found that bottom cooling generated the largest power and side cooling generated the lowest.
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