Aldilla, Muhammad Mirza Nabil (2026) Studi Numerik Pengaruh Tinggi Atap Kolektor Surya terhadap Karakteristik Aliran dan daya pada Solar Chimney Power Plant. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Solar Chimney Power Plant (SCPP) merupakan salah satu teknologi energi terbarukan yang memanfaatkan radiasi matahari untuk menghasilkan aliran udara melalui mekanisme konveksi alami akibat perbedaan temperatur dan densitas udara. Penelitian ini bertujuan untuk menganalisis pengaruh variasi ketinggian atap kolektor terhadap karakteristik aliran, distribusi temperatur, gradien tekanan, dan potensi daya pada prototipe SCPP. Analisis dilakukan secara numerik menggunakan metode Computational Fluid Dynamics (CFD) tiga dimensi dengan skema meshing polyhedra. Variasi ketinggian atap kolektor yang ditinjau meliputi 10 cm, 12,5 cm, dan 15 cm, dengan konfigurasi absorber tipe 5-square serta chimney divergen bersudut 0,6°. Hasil simulasi menunjukkan bahwa variasi ketinggian atap kolektor memberikan pengaruh yang signifikan terhadap kinerja sistem. Variasi 10 cm menghasilkan perbedaan temperatur (ΔT) tertinggi, meskipun memiliki laju aliran massa dan kecepatan aliran di dalam chimney yang paling rendah. Kondisi tersebut menyebabkan akumulasi panas pada massa udara yang lebih kecil sehingga memperkuat efek buoyancy dan menghasilkan potensi daya terbesar, yaitu sebesar 0,0251 W, dibandingkan variasi 12,5 cm sebesar 0,0241 W dan 15 cm sebesar 0,0223 W. Berdasarkan hasil tersebut, variasi ketinggian atap kolektor 10 cm dinyatakan sebagai konfigurasi yang paling optimal dalam meningkatkan performa SCPP pada prototipe yang diteliti. Jika geometri SCPP diperbesar 40x, maka daya yang dihasilkan pada variasi 10 cm menjadi 3,06 kW.
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Solar Chimney Power Plant (SCPP) is a renewable energy technology that converts solar radiation into airflow through natural convection induced by temperature and density differences. This study aims to investigate the effect of collector roof height variation on the flow characteristics and power output of an SCPP prototype. The analysis was carried out using a three-dimensional Computational Fluid Dynamics (CFD) simulation with a polyhedral meshing scheme. The investigated collector roof heights were 10 cm, 12.5 cm, and 15 cm, combined with a 5-square absorber configuration and a diverging chimney with an angle of 0.6°. The simulation results show that collector roof height has a significant influence on the thermal and fluid dynamic performance of the system. The 10 cm configuration produced the highest temperature difference (ΔT), even though it exhibited the lowest mass flow rate and air velocity in the chimney. This condition caused heat to accumulate in a smaller air mass, thereby strengthening the buoyancy effect and producing the highest power potential of 0.0251 W, compared with 0.0241 W for the 12.5 cm configuration and 0.0223 W for the 15 cm configuration. Based on these results, the 10 cm collector roof height is identified as the most optimal configuration for improving the performance of the studied SCPP prototype. If the SCPP geometry is scaled up by 40x, the power generated by the 10 cm variation becomes 3.06 kW.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Solar Chimney Power Plant, Computational Fluid Dynamics, Tinggi Atap Kolektor, Absorber 5-Square, Potensi Daya, Konveksi Alami. Solar Chimney Power Plant, Computational Fluid Dynamics, Collector Roof Height, 5-Square Absorber, Power Potential, Natural Convection. |
| Subjects: | Q Science > QC Physics > QC320 Heat transfer |
| Divisions: | Faculty of Industrial Technology > Mechanical Engineering > 21201-(S1) Undergraduate Thesis |
| Depositing User: | Muhammad Mirza Nabil Aldilla |
| Date Deposited: | 01 Aug 2026 03:24 |
| Last Modified: | 01 Aug 2026 03:24 |
| URI: | http://repository.its.ac.id/id/eprint/141073 |
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