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Second Thermal and Fluids Engineering  Conference

ISSN: 2379-1748
ISBN: 978-1-56700-430-4

AIR-COOLING THERMOELECTRIC POWER GENERATION FROM WASTEWATER

Fankai Meng
Institute of Thermal Science and Power Engineering, Naval University of Engineering, Wuhan 430033, China; Military Key Laboratory for Naval Ship Power Engineering, Naval University of Engineering, Wuhan 430033, China; College of Power Engineering, Naval University of Engineering, Wuhan 430033, China

Lingen Chen
Institute of Thermal Science and Power Engineering, Naval University of Engineering, Wuhan 430033, China; Military Key Laboratory for Naval Ship Power Engineering, Naval University of Engineering, Wuhan 430033, China; College of Power Engineering, Naval University of Engineering, Wuhan 430033, China

Zhihui Xie
Institute of Thermal Science and Power Engineering, Naval University of Engineering, Wuhan, 430033, P. R. China; Military Key Laboratory for Naval Ship Power Engineering, Naval University of Engineering, Wuhan, 430033, P. R. China; College of Power Engineering, Naval University of Engineering, Wuhan 430033, P. R. China

Yanlin Ge
Institute of Thermal Science and Power Engineering, Naval University of Engineering, Wuhan, 430033, P. R. China; Military Key Laboratory for Naval Ship Power Engineering, Naval University of Engineering, Wuhan, 430033, P. R. China; College of Power Engineering, Naval University of Engineering, Wuhan 430033, P. R. China

Abstract

A large amount wastewater heat is without recovery in China. The wastewater heat not only wastes, but also causes heat pollution. This paper presents a waste heat recovery solution based on thermoelectric power generation technology. The general structure of an air-cooling heat recovery device is designed. The physical model is established and solved. The temperature changing law along the flow direction is obtained. The effects of main factors are analyzed, such as thermoelectric module geometry, heat sink geometry and wastewater flow rate. The results show that wastewater temperature decreased 0.19° per meter in the flow direction with a 120mm wide square pipe. The area power density of the thermoelectric module is about 0.30kW/m2 and the efficiency is about 1.28%.

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