Studi Eksperimen Pengaruh Variasi Sudut Divergensi Chimney Terhadap Performa Solar Chimney Power Plant (SCPP)

Labib, Muhammad Hikmal (2026) Studi Eksperimen Pengaruh Variasi Sudut Divergensi Chimney Terhadap Performa Solar Chimney Power Plant (SCPP). Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Solar Chimney Power Plant (SCPP) merupakan teknologi pembangkit energi surya yang memanfaatkan pemanasan udara di bawah solar collector untuk menghasilkan aliran udara menuju chimney. Geometri chimney, khususnya sudut divergensi, dapat memengaruhi distribusi temperatur, karakteristik aliran udara, serta performa sistem. Penelitian ini bertujuan menganalisis pengaruh variasi sudut divergensi chimney sebesar 0,6°, 2°, dan 4° terhadap distribusi temperatur udara, daya luaran teoritis, dan efisiensi prototipe SCPP. Penelitian dilakukan secara eksperimental menggunakan prototipe dengan diameter collector 1,5 m dan tinggi chimney 1,5 m. Pengambilan data dilakukan pada pukul 10.00–15.00 WIB dengan interval satu jam. Parameter yang diukur meliputi temperatur udara di dalam collector dan chimney, kecepatan udara pada inlet collector, serta intensitas radiasi matahari. Hasil pengujian menunjukkan bahwa temperatur di dalam collector meningkat dari T inlet collector menuju T max / T sebelum inlet chimney, kemudian menurun pada T inlet chimney. Temperatur maksimum pada pukul 12.00 WIB diperoleh pada variasi 0,6° sebesar 339,25 K, diikuti variasi 2° sebesar 335,65 K dan variasi 4° sebesar 334,75 K. Temperatur di dalam chimney menurun seiring bertambahnya ketinggian. Daya luaran teoritis maksimum terjadi pada pukul 12.00 WIB, yaitu sebesar 0,2027 W pada variasi 0,6°, 0,1966 W pada variasi 2°, dan 0,1649 W pada variasi 4°. Efisiensi maksimum variasi 0,6° dan 2° terjadi pada pukul 14.00 WIB, masing-masing sebesar 0,0153% dan 0,0141%, sedangkan variasi 4° menghasilkan efisiensi terendah sebesar 0,0100%. Berdasarkan daya luaran teoritis dan efisiensi yang dihasilkan, sudut divergensi 0,6° memberikan performa terbaik pada konfigurasi prototipe SCPP yang diuji.
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Solar Chimney Power Plant (SCPP) is a solar energy conversion technology that utilizes air heating beneath a solar collector to generate airflow toward a chimney. Chimney geometry, particularly the divergence angle, may affect the temperature distribution, airflow characteristics, and overall system performance. This study aims to investigate the effects of chimney divergence angles of 0.6°, 2°, and 4° on the air temperature distribution, theoretical power output, and efficiency of an SCPP prototype. The study was conducted experimentally using a prototype with a collector diameter of 1.5 m and a chimney height of 1.5 m. Data were collected from 10:00 a.m. to 3:00 p.m. at one-hour intervals. The measured parameters included the air temperature inside the collector and chimney, the air velocity at the collector inlet, and the solar irradiance. The results show that the temperature inside the collector increased from T inlet collector to T max / T before inlet chimney and subsequently decreased at T inlet chimney. At 12:00 p.m., the highest temperature was obtained at a divergence angle of 0.6°, reaching 339.25 K, followed by 335.65 K at 2° and 334.75 K at 4°. The air temperature inside the chimney decreased with increasing height, while the 2° configuration maintained the highest temperatures at measurement points T6 to T8. The maximum theoretical power output occurred at 12:00 p.m., reaching 0.2027 W, 0.1966 W, and 0.1649 W for the 0.6°, 2°, and 4° configurations, respectively. The maximum efficiencies of the 0.6° and 2° configurations occurred at 2:00 p.m., with values of 0.0153% and 0.0141%, respectively, whereas the 4° configuration produced the lowest efficiency of 0.0100%. Based on the theoretical power output and system efficiency, the 0.6° chimney divergence angle provided the best performance for the tested SCPP prototype configuration.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Solar Chimney Power Plant, sudut divergensi, daya luaran teoritis, divergence angle, theoretical power output.
Subjects:	Q Science Q Science > QC Physics Q Science > QC Physics > QC320 Heat transfer
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Mechanical Engineering > 21201-(S1) Undergraduate Thesis
Depositing User:	Muhammad Hikmal Labib
Date Deposited:	31 Jul 2026 01:37
Last Modified:	31 Jul 2026 01:37
URI:	http://repository.its.ac.id/id/eprint/140860

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