Thermoelectric Power Generation System Using Waste
Heat from Biomass Drying |
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Authors: | S Maneewan S Chindaruksa |
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Affiliation: | (1) Department of Physics, Faculty of Science, Thermal Energy and Energy Conservation Promotion Research Unit, Naresuan University, Phitsanulok, 65000, Thailand |
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Abstract: | This paper looks at thermoelectric power generation from waste heat from a biomass drier. In this study, the researchers selected
four thermoelectric modules: two thermoelectric cooling modules (Model A: MT2-1,6-127 and Model B: TEC1-12708) and two thermoelectric
power generation modules (Model C: TEP1-1264-3.4 and Model D: TEG1-1260-5.1) for testing at temperatures between 25°C and
230°C. Test results indicated that the thermoelectric TEC1-12708 could generate a maximum power output of 1 W/module and TEP1-1264-3.4,
TEG1-1260-5.1, and MT2-1,6-127 could generate 1.07 W/module, 0.88 W/module, and 0.76 W/module, respectively. Therefore, the
thermoelectric cooling of TEC1-12708 was appropriate to use for thermoelectric power generation from waste heat. The experiments
used four ventilation fans (6 W, 2.50 m3/s) and 12 thermoelectric modules which were installed in the back of a charcoal brazier. The experiments were conducted and
tested in conditions of recycling 100%, 75%, 50%, and 25% of outlet air. Testing results identified that the temperatures
of the drying room were 81°C, 76°C, 70°C, and 64°C, respectively. The power generation system could generate about 22.4 W
(14 V, 1.6 A) with an air flow of 9.62 m3/s. The thermoelectric module can convert 4.08% of the heat energy to electrical energy. |
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Keywords: | Thermoelectric power generation biomass drying |
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