MOCHAMMAD KHOIRUL ANAM AL ABITD, . (2026) STUDI EKSPERIMENTAL KINERJA CLOSED LOOP PULSATING HEAT PIPE DENGAN 9 LEKUKAN MENGGUNAKAN FLUIDA KERJA AQUADES DAN ETANOL. Sarjana thesis, UNIVERSITAS NEGERI JAKARTA.
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Abstract
Penelitian ini bertujuan untuk menganalisis kinerja Closed Loop Pulsating Heat Pipe (CLPHP) dengan sembilan lekukan menggunakan pipa kapiler berdiameter dalam 2 mm yang dipanaskan oleh kawat nikelin, dengan variasi daya input dan sudut kemiringan serta penggunaan fluida kerja aquades (air destilasi) dan etanol. Parameter kinerja yang dievaluasi meliputi resistansi termal (Rth) dan laju perpindahan panas (Qout). Hasil pengujian menunjukkan bahwa peningkatan daya input cenderung menurunkan nilai Rth dan meningkatkan Qout, meskipun dipengaruhi oleh sudut kemiringan dan jenis fluida kerja. Pada fluida aquades (air destilasi), sudut kemiringan 60° memberikan kinerja terbaik dengan Rth terendah dan Qout tertinggi yang stabil pada rentang daya 10 - 50 W, sedangkan sudut 0° menunjukkan kinerja terendah akibat ketidakstabilan aliran. Sementara itu, pada fluida etanol, sudut 30° menghasilkan Qout tertinggi dan sudut 45° memberikan Rth terendah, sehingga sudut kemiringan optimum CLPHP berada pada kisaran 30° - 45° yang menunjukkan keseimbangan terbaik antara pengaruh gravitasi dan mekanisme osilasi fluida kerja. ***** This study aims to analyze the performance of a Closed Loop Pulsating Heat Pipe (CLPHP) with nine bends using a 2 mm inner diameter capillary tube heated by nickelin wire, with variations in input power and inclination angle and the use of distilled water and ethanol as working fluids. The performance parameters evaluated include thermal resistance (Rth) and heat transfer rate (Qout). The test results show that increasing input power tends to decrease the Rth value and increase the Qout, although it is influenced by the inclination angle and the type of working fluid. In distilled water, an inclination angle of 60° provides the best performance with the lowest Rth and the highest Qout which is stable in the power range of 10 - 50 W, while an angle of 0° shows the lowest performance due to flow instability. Meanwhile, in ethanol fluid, an angle of 30° produces the highest Qout and an angle of 45° provides the lowest Rth, so that the optimum inclination angle of the CLPHP is in the range of 30° - 45° which shows the best balance between the influence of gravity and the working fluid oscillation mechanism.
| Item Type: | Thesis (Sarjana) |
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| Additional Information: | 1). Dr. Eng. I Wayan Sugita, M.T.; 2). Dr. Eng. Agung Premono, M.T. |
| Subjects: | Teknologi dan Ilmu Terapan > Teknik Mesin, Mekanika Teknik Teknologi dan Ilmu Terapan > Teknik Energi |
| Divisions: | FT > S1 Teknik Mesin |
| Depositing User: | Mochammad Khoirul Anam Al Abitd . |
| Date Deposited: | 03 Feb 2026 04:44 |
| Last Modified: | 03 Feb 2026 04:44 |
| URI: | http://repository.unj.ac.id/id/eprint/64775 |
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