Experimental investigation on waste heat harvesting system analysis by thermo electric generator used automobile catalytic converter

Abstract

DECEMBER 2020 newlineCurrent scenario concerns include increasing world power consumptions and raising greenhouse heat emission posing serious considerations Thermoelectric energy conversion incorporates direct energy conversion from heat sources to electric energy conservation It incorporates direct energy conversion from heat sources to electric energy conservation and the underlying physical into rapid effect has been well recovered in this past century The thermoelectric effect is that the use of temperature differences to electric voltage creation and vice versa A considerable amount of primary fuels could be stored if some of the waste heat generated from Ovens Kilns Boilers Furnaces IC engines etc are recovered through waste heat generating system In a diesel engine substantial energy 10 to 30 is lost through the engine exhaust gas as waste heat It means a large fraction of the fuel energy remains untapped and gain of energy from waste heat is appreciable This waste heat can be used for generating the thermoelectric power by using thermoelectric materials Recently the nanoparticle innanocomposite is formulated to enhance thermoelectric characteristics which augment the interface scattering of photons for reducing the lattice as well as bipolar thermal conductivities The high energy ball milling is an effective methodology to produce thermoelectric nanocomposites in large scale The desirable characteristics of the thermoelectric materials are high Seebeck coefficient high conductivity and low thermal conductivity The efficiency of a thermoelectric material is estimated by their thermoelectric figure of merit ZT Bismuth Telluride semiconductor is a good thermo electric material have a thermo electric ZT between 0 8 and 1 superior electrical conductivity and slighter thermal conductivity newline newline