Muhammad, Hanif (2023) Experimental Study About the Effect of Ellipse Installation Beside Advancing Blade on The Performance of Savonius Wind Turbine for Case study for distance Y/D = 1.82; with ellipse size b/a = 1 and 1/2 at wind speed 4;5;6; and 7 m/s”. Other thesis, Institut Teknologi Sepuluh Nopember.
![[thumbnail of 02111942000005_Undergraduate_Thesis.pdf]](http://repository.its.ac.id/style/images/fileicons/text.png) |
Text
02111942000005_Undergraduate_Thesis.pdf - Accepted Version Restricted to Repository staff only until 1 September 2025. Download (4MB) | Request a copy |
Abstract
The global energy consumption is projected to grow at a rate of 1.5% per year until 2030, driven mostly by developing countries in Asia, including Indonesia, which still heavily relies on non-renewable energy. The country, however, has great potential for renewable energy sources such as solar, wind, micro-hydro, and biomass energy. Although the government has made efforts to promote renewable energy, more proactive steps from government, non�government agencies, and the public are needed to achieve sustainable and secure energy resources. One type of wind turbine that can be used in low-speed winds is the Savonius wind turbine, which has low efficiency values but is easy to construct and does not require high wind speed to start rotating. Studies have been conducted to improve the performance of Savonius wind turbines, including by placing a disruptor cylinder on the front side of the returning blade and installing a circular cylinder in front of the turbine. In this study, the disruptor cylinder had two different configuration sizes. The first configuration places an ellipse measuring b/a = 1 next to the advancing blade, while the second configuration places an ellipse measuring b/a = 1/2 next to the advancing blade. The wind turbine used has a diameter (D) of 165.2 mm, an end plate diameter (D0) of 320 mm, a shaft diameter (e) of 19 mm, and a turbine height (H) of 295 mm. This study was conducted with a Y/D ratio of 1.87, and a variation in wind speed of 4;5;6; and 7 m/s. The wind flow is generated by axial fans equipped with honeycombs to keep the flow uniform. Regulation of the speed of air flow is carried out through a voltage regulator. Measurements of airspeed, rotation, static torque, and dynamic torque are performed using anemometers, tachometers, torquemeters, and brake dynamometers. The results obtained were the placement of a disruptive cylinder next to the advancing blade with a distance of Y/D = 1.82 in the elliptical size configuration b/a = 1 effective at wind speeds of 7 m /s, where the highest increase occurred by 9% against the conventional coefficient of power value. For the value of the coefficient of moment there was the largest increase in wind speed of 4 m / s with a value of 5.22% against the value of the conventional coefficient of moment. Then the placement of the ellipse cylinder next to the advancing blade with a distance of Y/D = 1.82 in the elliptic size configuration b/a = 1/2 is effective at all speeds, where the highest increase occurs at a speed of 7 m/s by 10.37% against the conventional coefficient of power value. For the value of the coefficient of moment there was the largest increase in wind speed of 4 m/s with a value of 5.22% against the value of the conventional coefficient of moment. Installation cylinders next to the advancing blade with a distance of Y/D = 1.82 with elliptic size configuration b/a = 1 &; 1/2 improve self-starting ability but still not able to provide self-starting ability.
=================================================================================================================================
Konsumsi energi global diproyeksikan tumbuh pada tingkat 1,5% per tahun hingga 2030, sebagian besar didorong oleh negara-negara berkembang di Asia, termasuk Indonesia yang masih sangat bergantung pada energi tak terbarukan. Namun, negara ini memiliki potensi besar untuk energi terbarukan energi seperti matahari, angin, mikrohidro, dan energi biomassa. Padahal pemerintah sudah melakukan upaya untuk mempromosikan energi terbarukan, langkah yang lebih proaktif dari pemerintah, lembaga non pemerintah, dan masyarakat diperlukan untuk mencapai energi yang berkelanjutan dan aman sumber daya. Salah satu jenis turbin angin yang dapat digunakan pada angin berkecepatan rendah adalah angin Savonius Turbin yang memiliki nilai efisiensi rendah namun mudah dibangun dan tidak membutuhkan angin yang besar kecepatan untuk mulai berputar. Studi telah dilakukan untuk meningkatkan kinerja Savonius turbin angin, termasuk dengan menempatkan silinder pengganggu di sisi depan bilah balik dan memasang silinder melingkar di depan turbin. Pada penelitian ini, silinder pengganggu memiliki dua ukuran konfigurasi yang berbeda. Pertama konfigurasi menempatkan elips berukuran b/a = 1 di sebelah bilah yang maju, sedangkan yang kedua konfigurasi menempatkan elips berukuran b/a = 1/2 di sebelah bilah yang maju. Angin turbin yang digunakan memiliki diameter (D) 165,2 mm, diameter end plate (D0) 320 mm, poros diameter (e) 19 mm, dan tinggi turbin (H) 295 mm. Penelitian ini dilakukan dengan a Rasio Y/D sebesar 1,87, dan variasi kecepatan angin sebesar 4;5;6; dan 7 m/s. Aliran angin dihasilkan oleh kipas aksial yang dilengkapi dengan sarang lebah untuk menjaga agar aliran tetap seragam. Pengaturan kecepatan aliran udara dilakukan melalui pengatur tegangan. Pengukuran kecepatan udara, rotasi, statis torsi, dan torsi dinamis dilakukan dengan menggunakan anemometer, tachometer, torquemeter, dan dinamometer rem. Hasil yang diperoleh adalah penempatan silinder pengganggu di sebelah pemajuan sudu dengan jarak Y/D = 1,82 pada konfigurasi ukuran elips b/a = 1 efektif terhadap angin kecepatan 7 m/s, dimana peningkatan tertinggi terjadi sebesar 9% terhadap koefisien konvensional dari nilai kekuatan. Untuk nilai koefisien momen terjadi peningkatan terbesar pada kecepatan angin 4 m/s dengan nilai 5,22% terhadap nilai koefisien konvensional momen. Kemudian penempatan silinder elips di sebelah pisau penggerak dengan a jarak Y/D = 1,82 pada konfigurasi ukuran elips b/a = 1/2 efektif pada semua kecepatan, dimana peningkatan tertinggi terjadi pada kecepatan 7 m/s sebesar 10,37% terhadap koefisien konvensional dari nilai kekuatan. Untuk nilai koefisien momen terjadi peningkatan terbesar pada kecepatan angin 4 m/s dengan nilai 5,22% terhadap nilai koefisien konvensional momen. Silinder pemasangan di sebelah blade pemaju dengan jarak Y/D = 1,82 dengan konfigurasi ukuran elips b/a = 1 &; 1/2 meningkatkan kemampuan memulai sendiri tetapi masih belum bisa memberikan kemampuan memulai sendiri.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Savonius Wind Turbine; Wind Velocity; Circular Cylinder; Advancing Blade; Ellips. |
| Subjects: | T Technology > TJ Mechanical engineering and machinery > TJ828 Wind turbines |
| Divisions: | Faculty of Industrial Technology and Systems Engineering (INDSYS) > Mechanical Engineering > 21201-(S1) Undergraduate Thesis |
| Depositing User: | Muhammad Hanif |
| Date Deposited: | 04 Aug 2023 03:55 |
| Last Modified: | 04 Aug 2023 03:55 |
| URI: | http://repository.its.ac.id/id/eprint/100480 |
Actions (login required)
 |
View Item |