Studi Eksperimen Pengaruh Modifikasi Pompa Sentrifugal Closed Impeller Menjadi Splitter Closed Impeller Dengan Variasi Inlet Diameter Splitter Blades (D1s)

Sahirah, Atsilah Rizky Nur (2026) Studi Eksperimen Pengaruh Modifikasi Pompa Sentrifugal Closed Impeller Menjadi Splitter Closed Impeller Dengan Variasi Inlet Diameter Splitter Blades (D1s). Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Pompa sentrifugal merupakan salah satu mesin fluida yang banyak digunakan di sektor industri, domestik, dan irigasi karena mampu mengalirkan fluida dengan kapasitas besar. Namun, keterbatasan efisiensi operasional masih menjadi tantangan, sehingga diperlukan pengembangan geometri impeller untuk meningkatkan performa pompa. Salah satu metode yang berpotensi meningkatkan kinerja adalah penerapan splitter blades, yang telah dilaporkan mampu meningkatkan head dibandingkan impeller konvensional. Meskipun demikian, pengaruh variasi inlet diameter splitter 〖(D〗_1s) pada closed impeller masih memerlukan kajian lebih lanjut. Penelitian ini bertujuan menganalisis secara eksperimen pengaruh modifikasi closed impeller menjadi splitter blades impeller dengan variasi inlet diameter splitter 〖(D〗_1s) sebesar 65 mm, 75 mm, 80 mm, dan 85 mm terhadap performa pompa sentrifugal yang menggunakan fluida kerja air. Impeller dirancang menggunakan SolidWorks dan diproduksi dengan metode 3D printing menggunakan material PLA+ dengan infill 100%. Pengujian dilakukan pada beberapa variasi kapasitas dengan mengatur bukaan globe valve. Parameter yang dianalisis meliputi kapasitas aktual, head efektif, Water Horse Power (WHP), Brake Horse Power (BHP), dan efisiensi pompa. Hasil pengujian menunjukkan bahwa seluruh variasi splitter blades impeller menghasilkan head efektif yang lebih tinggi dibandingkan original closed impeller original pada seluruh kondisi kapasitas. Variasi 〖(D〗_1s) 75 mm memberikan performa terbaik dengan head efektif maksimum 13,87 m dan efisiensi tertinggi 50,51%, lebih tinggi dibandingkan closed impeller original yang menghasilkan head 11,57 m dan efisiensi 43,07% dengan kenaikan head sebesar 16,58 % dan efisiensi sebesar 17,27%. Hasil ini menunjukkan bahwa variasi diameter inlet splitter berpengaruh terhadap peningkatan karakteristik hidraulik pompa sentrifugal, dengan 〖(D〗_1s) 75 mm sebagai konfigurasi yang paling tertinggi pada kondisi pengujian.
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Centrifugal pumps are among the most widely used fluid machinery in industrial, domestic, and irrigation applications due to their ability to deliver large flow capacities. However, limitations in operational efficiency remain a significant challenge, necessitating the development of impeller geometries to enhance pump performance. One promising approach is the implementation of splitter blades, which have been reported to improve pump head compared with conventional impellers. Nevertheless, the effect of varying the splitter inlet diameter 〖(D〗_1s) on the performance of a closed impeller has not been comprehensively investigated. This study aims to experimentally investigate the effect of modifying a closed impeller into a splitter blades impeller with splitter inlet diameter 〖(D〗_1s) variations of 65 mm, 75 mm, 80 mm, and 85 mm on the performance of a centrifugal pump using water as the working fluid. The impellers were designed using SolidWorks and manufactured through 3D printing with PLA+ material at 100% infill density. Performance tests were conducted under several flow rate conditions by adjusting the globe valve opening. The evaluated parameters included the actual flow rate, effective head, Water Horsepower (WHP), Brake Horsepower (BHP), and pump efficiency. The experimental results showed that all splitter blades impeller configurations produced higher effective head than the original closed impeller under all tested flow rate conditions. Among the tested configurations, the splitter inlet diameter of〖 (D〗_1s) = 75 mm exhibited the best performance, achieving a maximum effective head of 13,87 m and a peak efficiency of 50.51%, compared with the original closed impeller, which produced an effective head of 11,57 m and an efficiency of 43.07%. This corresponds to an increase of 16.58% in effective head and 17.27% in pump efficiency. These findings indicate that the splitter inlet diameter significantly influences the hydraulic performance of the centrifugal pump, with 〖(D〗_1s) = 75 mm representing the optimum configuration under the present experimental conditions.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Closed Impeller; Centrifugal Pump; Splitter Blades Impeller; Inlet Diameter Splitter (D1s); Pump Performance,Closed Impeller; Pompa Sentrifugal; Splitter Blades Impeller; Inlet Diameter Splitter (D1s); Performa Pompa.
Subjects:	T Technology > TJ Mechanical engineering and machinery > TJ266 Turbines. Turbomachines (General) T Technology > TJ Mechanical engineering and machinery > TJ910 Electric pumping machinery T Technology > TJ Mechanical engineering and machinery > TJ919 Centrifugal pumps--Design and construction.
Divisions:	Faculty of Vocational > Mechanical Industrial Engineering (D4)
Depositing User:	Atsilah Rizky Nur Sahirah
Date Deposited:	04 Aug 2026 05:06
Last Modified:	04 Aug 2026 05:06
URI:	http://repository.its.ac.id/id/eprint/141133

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