Abstract
The use of solar energy in Indonesia is classified as having high potential; it is caused by Indonesia as a country on the equator. The use of solar energy today is widely used in the electricity generation sector and some in water heating and cooling systems. Excessive use of fossil energy will result in uncontrolled air pollution in the years to come. Increasing pollution in the air increases the greenhouse effect, and it causes an increase in acidic substances in the air, distribution of CO2 emissions, and an increase in room temperature. Therefore it is necessary to use energy derived from the sun in various activities aimed at reducing the use of fossil energy and avoiding global warming caused by an increase in the intensity of solar radiation on the surface of the earth. From the results of the study, three types of straight horizontal fin have been developed that can be used in solar collectors. The use and utilization of this fin aim to improve the efficiency of the performance of the solar collector. Kata kunci: Solar Energy, Solar Collector, Intensity of solar radiation, Horizontal Straight Fin, Increased Efficiency.
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