Abstract
An alternative energy source that can be utilized in Indonesia is solar energy, this energy is obtained from the intensity of solar radiation and then, is converted into electrical energy with solar panels technology. The performance of the solar panel is strongly influenced by the surface temperature of the panel because the semiconductor material in the panel is sensitive to temperature changes. However, the cooling process in solar panels to maintain temperature panels is important. This study combines the use of a cooling box and fins by considering fins with a very limited area. Experiments were carried out to observe natural and forced convection with or without fins in a cooling box. The results obtained that the natural convection cooling process of the panels using the cooling box and fins (without airflow) can reduce the temperature of the solar panels by 3.52%, on the other hand, by using forced convection process (with airflow), the cooling box and fins can reduce the temperature of solar panels by 3.78%. The effectiveness of fins in the case without airflow is 24.63%, but then the case of airflow cooling of solar panels is 16.63%. The addition of fins on natural convection cooling (without airflow) of solar panels causes the heat transfer area to increase, thereby increasing the rate of heat transfer between the solar panels and the air .
Highlights
Gunawan Rudi Cahyono 1, Pathur Razi Ansyah 2, Nuryasin Qadimil Awaly 3 1, 2, 3Program Studi Teknik Mesin Fakultas Teknik Universitas Lambung Mangkurat, Indonesia
ABSTRCT An alternative energy source that can be utilized in Indonesia is solar energy, this energy is obtained from the intensity of solar radiation and is converted into electrical energy with solar panels technology
The performance of the solar panel is strongly influenced by the surface temperature of the panel because the semiconductor material in the panel is sensitive to temperature changes
Summary
Intensitas radiasi matahari di luar atmosfer bumi sebesar 1360 W/m2, Setelah disaring oleh atmosfer bumi beberapa spektrum cahaya hilang, dan intensitas pada puncak radiasi menjadi sekitar 1000 W/m2. Gunawan et al (2020) melakukan kaji eksperimental pendinginan panel surya menggunakan variasi hembusan udara dengan dan tanpa kotak pendingin. Data yang didapatkan yaitu bahwa hasil pengujian panel surya tanpa pendinginan, temperature panel surya pada kisaran 38 - 52,8750 C, sementara menggunakan kotak pendinginan dengan kecepatan udara bervariasi yaitu 2, 3, 4 dan 5 m/s, temperature panel surya pada kisaran 33,43 - 40,50 C, atau rata-rata terjadi penurunan sebesar 17.7% [5]. Sementara itu penelitian Aly ,M.A at al (2019) menggunakan media sistem pendingin heat sink bersirip dengan dimensi 180mm × 100mm × 45 mm, untuk melakukan proses pendinginan pada panel surya polikristalin tegangan 6 volt dan arus 12,5 mA berdimensi 65 mm × 165 mm. Dengan mengatur lampu halogen 1000 watt sebagai simulator radiasi matahari, didapatkan hasil bahwa terjadi penurunan temperature pada panel surya tanpa hembusan udara sebesar 5.4% dan menggunakan hembusan udara sebesar 11%.[6]. Percobaan yang dilakukan untuk mengamati konveksi alami dan paksa dengan atau tanpa sirip dalam kotak pendingin
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