Performance of Car Radiators as Alternative Electric Energy Generators

Electrical energy is one form of energy that cannot be separated in life in the modern era. Over time, energy needs continue to increase, while fossil energy reserves are decreasing and even running out. This study uses several stages, namely meeting the needs of alternative energy, one of which is by modifying a car radiator or dynamo amperage on a car that functions as a generator of electrical energy when the electrical energy is still alive to supply electrical energy to the car, especially to charge electric batteries (car batteries). This study aims to determine the output in the form of speed, voltage, current, and power generated, in order to determine efficiency and good use for homes that are far from PLN supply and to save PLN costs. The results obtained at rotational speed and load will affect the low speed output because the higher the rotational speed, the higher the voltage and frequency. The larger the load, the lower the voltage and frequency. Under no-load conditions, the tested alternator can produce an average voltage of 664 V, the average current is 30.2 A, and the average speed is 4632 rpm. While the tested alternator is able to produce an average voltage of 484 V, the average current is 100 A and the average speed is 3489 rpm.