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Available online at www.worldscientificnews.com WSN 48 (2016) 133-148 EISSN 2392-2192 The energy harvesting from waste heat P. Kardasz1,a, R. Wróbel1, J. Doskocz2, P. Wiejkut3 1Vehicle Engineering Department, Technical University of Wroclaw, ul. Braci Gierymskich 164, 50-640 Wroclaw, Poland 2Cluster Research and Development Innovation Foundation for Development of Science and Business on Medical and Exact Science, Wroclaw, Poland ABSTRACT 3Lower Silesia Accelerator Technology and Innovation Sp z o.o., Wroclaw, Poland aE-mail address: piotr.kardasz@pwr.edu.pl The article focuses on the use of thermoelectrics for the energy harvesting from waste heat. There were discussed the thermoelectric effects and the solutions of converting the waste heat into electricity were shown. The application and operation of thermoelectrics for heat recovery from cars, the cogeneration of heat for home and in wristwatches were presented. An analysis of the possibilities of using Peltier cells in municipal and long-distance transport was conducted. The aim of the study was to evaluate the possibility of reducing fuel costs by obtaining electricity from the Peltier cells instead of the alternator. The efficiency tests of operation the Peltier cells were carried out. On their basis was possible to determine the amount of recovered energy thanks to their use. On the basis of calculations it was concluded that at the current price of unit cell, the use of this solution is not fully economically justifiable. However, there are possible solutions that could increase the efficiency of the cell. The advantages of using cells is reducing the vehicle engine wear and emission of harmful substances into the environment. It was found that most justifiable is the mounting of cells in vehicles equipped with multiple electrical receivers with low efficiency of the engine. It was indicated that more and more new thermoelectric materials that provide efficient and cheap energy harvesting on a large scale are looking for. In Google Patents and Espacenet are posted many solutions of waste heat recovery, which indicates that this field is constantly evolving. Keywords: waste heat harvesting; thermoelectric effect; thermoelectric generators; a Peltier cellPDF Image | The energy harvesting from waste heat
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