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원병철(Byeong-Cheol Won),이석호(Seok-Ho Rhi),김선국(Sun-Kook Kim),이기우(Ki-Woo Lee),김시호(Shi-Ho Kim),유정호(Jeong-Ho Yoo) 대한설비공학회 2009 대한설비공학회 학술발표대회논문집 Vol.2009 No.-
A new progressive advanced approach (Loop thermosyphon Thermoelectric Power generation System) is suggested to optimize heat recovery from vehicle exhaust gas. The present thermoelectric generators (TE) system offers the potential to increase vehicle fuel economy by converting a portion of engine waste heat to electricity. The feasibility of TE system is assessed in the context of hybrid electric vehicles. The present new TE system adopted heat pipes as a cooling heat exchanger of TE module. The present simulation study has been performed with CFD thermal modeling tool. In the present study, the proposed TE generation system for the future hybrid car could be recognized as the new waste heat recovery system. It was observed that the power output of the present TE generation system affected by various variables such as cooling media, thermal contact and supplied power etc. The present simulation results with the heat pipe TE module shows possibilities as an improved TE system for future thermoelectric hybrid vehicles.
원병철 ( Byeong-cheol Won ),이석호 ( Seok-ho Rhi ) 충북대학교 산업과학기술연구소 2024 산업과학기술연구 논문집 Vol.38 No.1
This study addresses the persistent issue of energy inefficiency in vehicle engines, where only about 30% of the fuel's energy is utilized for power, with 62.4% heat loss. To mitigate this energy loss, we propose a thermoelectric power generation system recovering waste heat from hybrid vehicle exhausts. The system employs thermoelectric modules (TE modules) that convert thermal energy directly into electrical energy via the Seebeck effect. To enhance the efficiency of heat transfer within the TE system, we integrate heat pipes, which are optimal for efficient heat transfer. The designed system features ten heat pipes attached vertically to the exhaust pipe to maximize the heat transfer area. We conducted both experimental and simulation studies to evaluate the impact of various parameters on the system's power output. Thermal analysis software was used to model and predict the performance of the thermoelectric generator, analyzing variables such as conduction, contact resistance, and boundary temperatures. The simulation results aligned with our expectations, demonstrating the system's effectiveness in harnessing exhaust heat to generate electricity. This research highlights the potential of thermoelectric technology combined with heat pipes to significantly improve energy efficiency in hybrid vehicles.