THERMAL SCIENCE

International Scientific Journal

Muhammad Irfan Khan

,

Ali Hussain Kazim

,

Ghulam Moeen Uddin

,

Jawad Sarwar

,

Muhammad Farooq

,

Muhammad Rohail Danish

,

Aqsa Shabbir

THERMOELECTRIC WASTE HEAT RECOVERY OF AN AUTOMOTIVE INTERNAL COMBUSTION ENGINE USING (NA, K) CO-DOPED POLYCRYSTALLINE TIN SELENIDE (SNSE)

ABSTRACT
Recent developments in converting the thermal energy of exhaust gasses of auto-mobiles into electric power directly, require an extensive simulation and design of appropriate TEG system. This work aims to create a physical model of engine exhaust system using Simscape language to simulate waste heat recovery from the exhaust gasses using (Na, K) co-doped polycrystalline tin selenide, SnSe, TE material. This particular material exhibits a high Seebeck coefficient and extremely low lattice thermal conductivity in power generation because of phonons scattering by the rattlers (Na, K atoms) and nanostructuring. In the MATLAB/SIMULINK environment, a transient simulation is done for the recovery of waste heat from a 1.5 liters engine using these specific material-based TE modules. According to the results obtained, at the temperature gradient of 285 K across its sides, electrical power of 10.4 W with a conversion efficiency of almost 5% is produced from one module. The total system output power was 477 W at the exhaust gas inlet temperature of 900 K to the octagonal HEx on which the modules are mounted.
KEYWORDS
Co-doped polycrystalline SnSe, internal combustion engines, Thermoelectric devices, waste heat recovery
PAPER SUBMITTED: 2020-06-20
PAPER REVISED: 2020-09-20
PAPER ACCEPTED: 2020-09-26
PUBLISHED ONLINE: 2020-10-10
DOI REFERENCE: https://doi.org/10.2298/TSCI200620300K
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2021, VOLUME 25, ISSUE Issue 1, PAGES [407 - 419]
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Thermoelectric waste heat recovery of an automotive internal combustion engine using (Na, K) co-doped polycrystalline tin selenide (SnSe)

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence