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Waste Heat Recovery by Thermoelectric Generator from Thermal Oil Heater Exhaust

M. C. Barma, M. Riaz, R. Saidur, and B. D. Long
Department of Mechanical Engineering, Faculty of Engineering, University of Malaya

Abstract—Thermoelectric power generation by recovering waste heat is a worthy choice to improve the system efficiency. In this study, we reports a method to estimate the amount of power produced by Thermoelectric Generator (TEG) module, placed between flue gas duct and fresh air duct of an industrial thermal oil heater. Plate fin heat sink on hot and cold side of the TEG module was inserted into the flue gas and fresh air duct respectively. The effect of various design parameters, flow parameters were investigated in order to maximize the power generation. Bi2Te3 based commercial TEG module (HZ-2) is considered in evaluation process and 3.7W could be generated from each module. Estimated annual power generation from this proposed system could be around 152,380kWh. Thermal efficiency of the TEG modules could be enhanced up to 7%. The specifications of plate fin heat sinks have substantial impact on the performance of TEG module.

Index Terms—waste heat recovery, thermoelectric power generation, thermal oil heater, TEG

Cite: M. C. Barma, M. Riaz, R. Saidur, and B. D. Long, "Waste Heat Recovery by Thermoelectric Generator from Thermal Oil Heater Exhaust," International Journal of Electrical Energy, Vol. 3, No. 4, pp. 235-238, December 2015. doi: 10.18178/ijoee.3.4.235-238

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