Comparison of Effectiveness in Straight-Fin Radiator Types with variations in Time and cooling air velocity

Abstract

The heat is the result of combustion that occurs in the combustion chamber with very high temperatures above 800 °C. If this temperature is left, it will cause the engine to overheat so that it can cause damage to engine components. Current cooling liquid is also developed with advantages compared to normal water which is actually equipped with anti-freeze so that the liquid does not freeze during winter, it is also equipped with anti-rust content so that the radiator has a longer service life. This research was conducted experimentally on a 5K series Toyota Kijang car engine. The effectiveness of the radiator is known by measuring the temperature of the coolant entering the radiator, the temperature of the liquid coming out of the radiator, then measuring the temperature of the coolant inlet air, measuring the temperature of the coolant air after passing through the radiator. The results obtained that the Prestone brand coolant at 60 seconds with a cooling air velocity of 2.4 m / s is better in reducing the heat generated by this machine is proven by the effectiveness value of 0.494.