Jaafar Ali.Mahdi, Hasanain J. A. Juaifer, Hayder J. Kurji, Murtdha S. Imran

Abstract: All internal combustion engines exhibit significant energy loss during operation; the cooling and exhaust systems dissipate the bulk of the energy produced during combustion. The use of this energy enhances engine efficiency. One use of this capability is to enhance the efficiency of the engine's air intake, achieved using a turbocharger. Utilise thermoelectric generators (TEGs) to transform thermal energy into electrical energy. This investigation used a TEG model (27145) installed externally at the exhaust port. A system of four thermoelectric generators was established and interconnected in both series and parallel configurations. Measurements of current, voltage, power, and temperature fluctuations between the two sides of the thermoelectric generator were conducted using measuring devices.The practical component of the research was conducted at an ambient air temperature of 37°C, engine speed of 2340 rpm, specific fuel consumption of 0.173 kg/hr, and brake power of 2.34 kW. The empirical findings indicate that the maximum voltage and power achievable by connecting four thermoelectric generators in series are 13.33 volts and 11.25watts, respectively. Furthermore, when the thermoelectric generator was configured in parallel, the maximum current output was 3.14 amperes.

Keywords: CI engine, TEG, electrical power generation, waste heat.

Date Published: April 11, 2025
DOI: 10.11159/jffhmt.2025.013

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