Studi Eksperimen Pengaruh Modifikasi Closed Impeller Pompa Sentrifugal Menjadi Tandem Blades Impeller Dengan Variasi Gap Antara Front Dan Rear Blades

Azzahra, Nuraini Ramadhani (2026) Studi Eksperimen Pengaruh Modifikasi Closed Impeller Pompa Sentrifugal Menjadi Tandem Blades Impeller Dengan Variasi Gap Antara Front Dan Rear Blades. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Pompa sentrifugal banyak digunakan dalam sektor industri dan domestik karena mampu menghasilkan aliran fluida yang kontinu dengan perawatan yang relatif mudah. Salah satu komponen utama yang memengaruhi performa pompa sentrifugal adalah impeller, khususnya jenis closed impeller yang dikenal memiliki efisiensi dan head yang cukup tinggi. Namun, pada kondisi operasi tertentu, closed impeller masih mengalami kerugian hidraulik serta ketidakseragaman aliran yang dapat menurunkan kinerja pompa. Oleh karena itu, diperlukan pengembangan desain impeller untuk meningkatkan performa pompa sentrifugal. Penelitian ini bertujuan untuk mengkaji pengaruh modifikasi closed impeller menjadi tandem blades impeller dengan variasi gap antara front blades dan rear blades terhadap performa pompa sentrifugal. Metode yang digunakan adalah studi eksperimen. Perancangan impeller dilakukan menggunakan perangkat lunak SolidWorks 2020 dan prototipe dimanufaktur menggunakan teknologi 3D printing berbahan PLA+. Variasi gap yang diuji meliputi 10°, 13°, dan 16° dengan fluida kerja berupa air. Parameter performa yang dianalisis meliputi kapasitas aliran, head efektif, daya poros, daya fluida, dan efisiensi total pompa. Hasil pengujian menunjukkan bahwa tandem blades impeller dengan gap 10° menghasilkan head tertinggi sebesar 14,77 m, yang merupakan kenaikan sebesar 6,80% dibandingkan closed impeller 3D printing sebesar 13,83 m pada kapasitas rendah. Sementara itu, efisiensi tertinggi dihasilkan oleh tandem blades impeller dengan gap 16° sebesar 44,74%, yang merupakan peningkatan sebesar 4,24% dibandingkan closed impeller 3D printing sebesar 42,92% pada kapasitas tinggi (fully open). Berdasarkan hasil tersebut, tandem blades impeller dengan gap 10° dan 13° direkomendasikan untuk aplikasi yang membutuhkan head tinggi, sedangkan gap 16° lebih sesuai untuk aplikasi yang memprioritaskan efisiensi tinggi. ===================================================================================================================================
Centrifugal pumps are widely used in both industrial and domestic sectors due to their ability to produce continuous fluid flow with relatively easy maintenance. One of the main components affecting the performance of a centrifugal pump is the impeller, particularly the closed impeller type, which is known for its relatively high efficiency and head. However, under certain operating conditions, the closed impeller still experiences hydraulic losses and flow non-uniformity that can reduce pump performance. Therefore, the development of impeller design is required to improve centrifugal pump performance. This study aims to examine the effect of modifying a closed impeller into a tandem blade impeller with gap variations between the front and rear blades on centrifugal pump performance. The method used in this study is an experimental approach. The impeller was designed using SolidWorks 2020 software, and the prototype was manufactured using 3D printing technology with PLA+ material. The tested gap variations were 10°, 13°, and 16°, using water as the working fluid. The performance parameters analyzed included flow capacity, effective head, shaft power, fluid power, and total pump efficiency. The test results show that the tandem blades impeller with a 10° gap produced the highest head of 14.77 m, an increase of 6.80% compared to the 3D-printed closed impeller of 13.83 m at low capacity. Meanwhile, the highest efficiency was achieved by the tandem blade impeller with a 16° gap at 44.74%, an increase of 4.24% compared to the 3D-printed closed impeller of 42.92% at high capacity (fully open). Based on these results, the tandem blades impeller with 10° and 13° gaps is recommended for applications requiring high head, while the 16° gap is more suitable for applications prioritizing high efficiency.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Kata Kunci: Closed Impeller, Pompa Sentrifugal, Tandem Blades Impeller, Gap, Performa Pompa Keywords : Closed Impeller, Centrifugal Pump, Tandem Blades Impeller, Gap, Pump Performance
Subjects:	T Technology > TJ Mechanical engineering and machinery > TJ903 Pumping machinery.
Divisions:	Faculty of Vocational > Mechanical Industrial Engineering (D4)
Depositing User:	Nuraini Ramadhani Azzahra
Date Deposited:	31 Jul 2026 06:12
Last Modified:	31 Jul 2026 06:12
URI:	http://repository.its.ac.id/id/eprint/140209

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