Abstract
Developing a portable combined heat and power (CHP) system is vitally important under attacks of natural disasters. A self-powering and self-aspirating combustion-powered thermoelectric generator (TEG), which burns gas fuels from standard gas tanks, is first designed and optimized to provide such a CHP solution. The total weight of the proposed CHP system, including shells and accessories for user's convenience, is 4.4 kg. This system can also simultaneously provide electric and clean heating powers of 20.5 and 612.6 W, respectively. The overall efficiency of power generation and CHP is 3.0% and 92.5%, respectively. A novel heat-collector-spreader is developed and optimized through modifications of different fin distributions, thermal conductivities, and heat spreader thicknesses. Results found that a highly conductive heat-collector-spreader, which has sufficient heat spreader thickness and properly distributed fins, is required to improve the CHP performance. The study provides a portable CHP prototype based on a self-powering, self-aspirating, gas-fueled and combustion-powered TEG, and contributes to the emergency management technology by filling a research gap, that is, the lack of a highly portable CHP system for temporary shelters.
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