The Analysis and Evaluation of The Performance of 7 Stage Centrifugal Compressor Apparatus with Variations in Blade Speed and Flow Rate

Authors

  • Alvin Universitas Pembangunan Nasional "Veteran Jawa Timur"
  • Ahmad Khairul Faizin Universitas Pembangunan Nasional "Veteran" Jawa TImur

DOI:

https://doi.org/10.32497/jrm.v20i2.6642

Keywords:

Centrifugal, Compressor, Efficiency, Motor Power, Performance

Abstract

Centrifugal compressors have an important role in industry because they function to increase gas pressure through the impeller. However, efficiency and power consumption issues frequently arise, particularly under variations in blade speed and flow rate. Previous studies have mostly employed CFD simulations without direct experimental analysis of blade speed and valve opening on actual compressor performance. This study aims to analyze the performance of a seven-stage centrifugal compressor with variations in blade speed and flow rate through experimental methods to obtain efficient operating conditions. The research method involved collecting data three times with variations in blade speed and valve openings of 50%, 75%, and 100%, and analyzing isentropic efficiency based on motor power. The results showed the highest efficiency of 67% occurred at 550 RPM with a 50% valve opening, while efficiency decreased at 100% valve opening across all RPM levels. Motor power consumption increased from 35 Watts at 450 RPM to 280 Watts at 1350 RPM, but the increase in power was not accompanied by an increase in efficiency, especially at high speeds, which led to turbulence and decreased performance. In conclusion, the optimal compressor performance was achieved at medium blade speeds with partial valve openings, resulting in optimal efficiency and power consumption. These findings can serve as a reference for the design and operation of centrifugal compressors to achieve more energy- and cost-efficient performance.

References

[1] Hapsari, F., Asminah, N., & Okta, M. F. I. (2023). Analisis Efisiensi Kinerja Kompresor Sentrifugal (15-K-103) pada Unit Residue Catalytic Cracking di PT Pertamina Internasional Refinery Unit VI Balongan Indramayu. Jurnal Global Ilmiah, 1(3), 187-192.

[2] Simanungkalit, B. N. B., & Karti, K. (2023). Uji Kapasitas Udara Yang Dihasilkan Kompresor Sentrifugal 3 Stage Pada Unit Energy Di Pt Toba Pulp Lestari. Ira Jurnal Teknik Mesin Dan Aplikasinya (Irajtma), 2(1), 58-64.

[3] Wulandari, P.F. dkk., 2023. Unjuk Kerja dan Efisiensi Turbin Uap dan Generator (TG-65) Pada Pembangkit Listrik Unit Sistem Utilitas Departemen Produksi IIIA PT Petrokimia Gresik. Sinergi Polmed; Jurnal Ilmiah Teknik Mesin, 4(1), pp.67-74.

[4] Zhao, D., Hua, Z., Dou, M., & Huangfu, Y. (2018). Control Oriented Modeling And Analysis Of Centrifugal Compressor Working Characteristic At Variable Altitude. Aerospace Science and Technology, 72, 174-182.

[5] Andalucia, S. (2023). Operasi Dan Troubleshooting Gas Compressor Di Stasiun Kompresor Gas (Skg) Lembak Pt Pertamina Hulu Rokan Region 1 Zona 4. Jurnal Cakrawala Ilmiah, 2(5), 2133-2152.

[6] Kurniawan, A., & Charles, H. (2019). Analisis Pengaruh Proses Pendinginan Terhadap Temperatur Angin Masukan Stage Terakhir pada Kompresor Sentrifugal Multistage IHI TRE-50. Jurnal Teknik Mesin Mercu Buana, 8(1), 340345.

[7] Faturrahman, F. (2021). Rancang Bangun Modifikasi Turbocharger Menjadi Turbo Jet Sebagai Media Pembelajaran (Design Of Modification Turbocharger Become Turbo Jet As Teaching Aids)

[8] Mohammad, A. R. (2021). Penyebab Penurunan Kinerja Pompa Sentrifugal Terhadap Pendingin Mesin Induk.

[9] Saputro, A. Dan Soleha, I., (2021). ANALISIS PERFORMA EXTRACTION CONDENSELIG TURBINE UNIT 1 DI PLTU BABELAN. Jurnal Teknika dan Informatika (JTI), 191), pp.52-62.

[10] Tarigan, K. (2020). Pengujian Karakteristik Pompa Sentrifugal Susunan Seri Dan Pararel Dengan Tiga Pompa Pada Spesifikasi Yang Berbeda. Jurnal Ilmiah Kohesi, 4(2), 31-31.

[11] Hutabarat, B (2019). Analisis Unjuk Kerja Pompa Sentrifugal Dengan Variasi Head.

[12] Dwiaji, Y. C., & Firdaus, F. (2022). Analisis Pengaruh Efisiensi Isentropik Dan Beban Operasi Terhadap Penggunaan Energi Motor Listrik Kompresor Sentrifugal Di Converting Plant Pt Xxx. Injection: Indonesian Journal of Vocational Mechanical Engineering, 2(1), 30-36.

[13] Jiang, H., Dong, S., Liu, Z., He, Y., & Ai, F. (2019). Performance Prediction Of The Centrifugal Compressor Based On A Limited Number Of Sample Data. Mathematical Problems in Engineering, 2019(1), 5954128.

[14] Talumesang, Z.D. dkk., (2022). Pengaruh Temperatur Air Pendingin Terhadap Efisiensi dan Kinerja Turbin di Pembangkit Listrik Tenaga Panas Bumi Unit 2 Lahendong. Jurnal FisTa: Fisika dan Terapannya, 3(1), pp.44-48.

[15] Blanco-Patiño, D.F., Niño-Navia, J., García-Sepulveda, J.I., & Nieto-Londoño, C. (2023). Performance Prediction of a Centrifugal Compressor for a Cogeneration Microturbine. SSRN Electronic Journal.

Downloads

Published

2025-08-31

How to Cite

Alvin, & Ahmad Khairul Faizin. (2025). The Analysis and Evaluation of The Performance of 7 Stage Centrifugal Compressor Apparatus with Variations in Blade Speed and Flow Rate. Jurnal Rekayasa Mesin, 20(2), 271–278. https://doi.org/10.32497/jrm.v20i2.6642

Issue

Vol. 20 No. 2 (2025): Volume 20, Nomor 2, Agustus 2025

Section

Articles

License

Copyright (c) 2025 Alvin, Ahmad Khairul Faizin

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

Copyright of articles that appear in Jurnal Rekayasa Mesin belongs exclusively to Penerbit Jurusan Teknik Mesin Politeknik Negeri Semarang. This copyright covers the rights to reproduce the article, including reprints, electronic reproductions, or any other reproductions of similar nature.