Phase Change Material Berbasis Parafin Terdoping Grafena Pada Back Sheet Berstruktur Honeycomb Untuk Pendingin Pasif Panel Surya

Rahmawati, Julia Agung (2023) Phase Change Material Berbasis Parafin Terdoping Grafena Pada Back Sheet Berstruktur Honeycomb Untuk Pendingin Pasif Panel Surya. Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Peningkatan temperatur pada panel surya memiliki pengaruh terhadap penurunan daya listrik yang dihasilkan. Dari pengukuran diketahui bahwa panel surya akan mulai mengalami penurunan daya secara signifikan pada temperatur >480C. Pengunaan pendingin diperlukan untuk mencegah penurunan efisiensi tersebut. Pendingin pasif dibuat dengan memadukan back sheet aluminium berstruktur honeycomb heksagonal yang berisi Phase Change Material (PCM) berjenis parafin wax. Untuk meningkatkan konduktivitas termal PCM, parafin wax akan didoping dengan grafena. Pada penelitian ini variasi ukuran heksagonal pada honeycomb yang disisipkan dalam back sheet yaitu 3 cm, 4 cm, dan 5 cm. Berdasarkan analisis Geometrik faktor (GF), back sheet dengan sisi heksagonal 3 cm menunjukkan nilai GF terkecil yang berarti paling cepat dalam meningkatkan pelelehan pada PCM di dalamnya. Variasi PCM yang digunakan sebagai bahan pengisi back sheet yaitu parafin murni, parafin-grafena 0,1% wt, parafin-grafena 0,2% wt, dan parafin-grafena 0,3% wt. Karakterisasi termal menunjukkan penambahan grafena dapat meningkatkan konduktivitas termal dari parafin dari 0,051 menjadi 0,807 W/m°C. Hasil pengukuran performa pendingin pasif didapat back sheet pendingin efektif menurunkan temperatur panel surya pada kisaran titik lebur PCM. Penurunan temperatur berkisar 14-23%. Dari penurunan temperatur tersebut diperoleh perbedaan daya listrik 0,3-1,2% dengan daya panel surya berpendingin lebih tinggi dari panel surya tanpa pendingin. Paduan back sheet bersisi 3 cm berisi PCM jenis parafin-grafena 0,3% menyerap panas hingga kapasitas 78,67%.
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Increasing the temperature of the solar panel affects decreasing the electricity generated. From measurements, it is known that solar panels will begin to experience a significant decrease in power at temperatures> 48°C. The use of coolers is necessary to prevent this decrease in efficiency. Passive cooling is made by combining an aluminum back sheet with a hexagonal honeycomb structure which contains a Phase Change Material (PCM) of the type of paraffin wax. To increase the thermal conductivity of paraffin wax, paraffin wax will be doped with graphene. In this study, variations in the hexagonal size of the honeycomb inserted in the back sheet were 3 cm, 4 cm, and 5 cm. Based on the geometric factor (GF) analysis, the back sheet with hexagonal sides of 3 cm shows the smallest GF value, which means the fastest increase in PCM melting. Variations of PCM used as back sheet fillers were pure paraffin, 0.1% wt paraffin-graphene, 0.2% wt paraffin-graphene, and 0.3% wt paraffin-graphene. Thermal characterization showed that adding graphene increased the thermal conductivity of paraffin from 0.051 to 0.807 W/m°C. The results of passive cooling performance measurements obtained that the cooling back sheet effectively lowers the temperature of solar panels in the PCM melting point range. The temperature drop ranges from 14-23%. From this decrease in temperature, a difference of 0.3-1.2% in electric power is obtained with a higher power of cooled solar panels than uncooled solar panels. Alloy back sheet with 3 cm sides containing 0.3% paraffin-graphene PCM absorbs heat up to 78.67% capacity.

Item Type:	Thesis (Masters)
Uncontrolled Keywords:	panel surya, pendingin pasif, parafin, grafena, solar panels, passive cooling, paraffin, graphene
Subjects:	T Technology > TJ Mechanical engineering and machinery > TJ810.5 Solar energy
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Physics Engineering > 30101-(S2) Master Thesis
Depositing User:	Julia Agung Rahmawati
Date Deposited:	07 Aug 2023 03:03
Last Modified:	07 Aug 2023 03:03
URI:	http://repository.its.ac.id/id/eprint/102479

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