Abstract
In this case study, an energy harvesting system using a thermoelectric power generator (TEG) has been constructed. Experimental investigation of the hot and cold sides of the thermoelectric modules (TMs) in this system has been undertaken to assess the feasibility for automotive applications. Two test benches have been developed to analyze the TM performance and the TEG system characteristics, especially the temperature difference, open-circuit voltage, and maximum power output of the TM and TEG system. As the performance of a TM is most influenced by the applied pressure and the temperature difference, a thermostatic heater, thermostatic water tank, and clamping devices are used in our experimental apparatus, increasing the output power of the TEG system. Based on the test bench, a new system called the “four-TEGs” system was designed and assembled into a prototype vehicle called “Warrior,” and the characteristics of the system such as the maximum power output have been studied in road tests. The results show great potential for application of this technology in future vehicles.
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