Özet:

In this study, the theoretically studied the impact of the use of different semiconductor materials in the thermoelectric generator (TEJ) in which internal combustion engines (YM) exhaust heat energy is converted into electric energy on the output parameters of TEJ (weight flow, output voltage and power under load). In the study, 5 different p-n pairs were created for the p-n pairs that form thermoelectric modules (TEM), consisting of a combination of Bi2Te3, Bi0,3Sb1,7Te3, PbSe0,5Te0,5 and Zn4Sb3 type 4 different semiconductor materials. The TEJ, which uses the TEM modules created from the specified p-n pairs, was analyzed using the theoretical TEJ model developed in the previous study (Topalcı, 2017) in the Matlab/Simulink program. To analyze the output parameters of the TEMs created from 5 different p-n pairs identified in the theoretical TEJ model, the two-cylindrical buji-burning engine from the experimental studies carried out in the range of 1500-4000 rpm (Gürbüz and Akçay, 2015) in addition to the temperature and debt of the exhaust gas, the temperature and debt of the motor cooling water were used. The findings found that the TEM modules created using the Bi0,3Sb1,7Te3 and Bi2Te3 semi-conductors respectively in p-n pairs and that the TEJ’s output power under load is at the highest level, with the TEJ’s 4000 d/d motor turn and the ΔT = 162,4 K temperature difference that can be achieved at 86,53 W (output flow = 1,073 A and output voltage = 80,64 V) DC electric power.

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