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Abstract
The power generation based upon fossil fuel needs to conserved as these fuels are depleting in nature and its furnishing takes years to replenish. Conventional power plants are using them for electricity production and causing harmful emissions and waste thermal energy. Therefore, conservation of such fuel, harvesting the waste heat is the important task for the energy society. To extract heat/power from these waste energies and reduce the hazardous emissions from environment, and methods are to be identified. Usually, massive amount of thermal energy goes wasted from various systems such as the power plants, industries, and vehicles exhaust, and many more.