Experimental Investigation of the Use of Refrigerant in the Cooling System of the Internal Combustion Engine: Preliminary Study

Authors : Yavuz Selim Kayalı, Tahsin Yüksel, Abdullah Kapıcıoğlu

Pages : 635-649

Doi:10.35234/fumbd.1657782

View : 46 | Download : 31

Publication Date : 2025-09-30

Article Type : Research Paper

Abstract :A new cooling system has been designed to reduce the adverse effects of the cooling system used in internal combustion engines and to create a more efficient system. R134a gas was used as the refrigerant in the engine cooling system in the experimental setup set up for the preliminary study. The cooling effect of gas masses of different weights (400, 450, 500, 550, 600 g) filled into the cooling system for cooling the simulated cylinder fixed at different temperatures (50, 60, 70, 80, 90, 100, 110, 120 °C) was determined. By measuring the temperature and pressure values in the system, comparisons were made by calculating the heat transfer coefficient, fluid flow rate and heat transfer rates of the system. The most efficient fluid weight used in the study was determined as 550 g. In the system without a circulation pump, the pressure difference between the heat receiving and heat giving sections allows the refrigerant gas to circulate. It has been observed that this situation is made possible by the increase in the heat transfer coefficient depending on the temperature increase. The absence of a pump in the system will contribute to engine performance. Having the refrigerant in gaseous form will enable smaller engine structures, lower vehicle weight, less fuel consumption and less exhaust emissions.
Keywords : İçten yanmalı motorlar, soğutma sistemi, R134a, soğutucu akışkanlar, ısı transfer oranı

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