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Journal : SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin

Performance Evaluation and Optimization of Chiller Systems: A Data-Driven Approach to Enhancing Energy Efficiency Marbun, Rupdin; Ardiansyah, Teddy; Nofirman, Nofirman
SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Vol. 19 No. 1 (2025): SINTEK JURNAL
Publisher : Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/sintek.19.1.11-24

Abstract

Chiller systems account for a significant portion of energy consumption in industrial and commercial HVAC operations, often exceeding 50% of total power usage. However, inefficiencies such as elevated condenser pressure, inadequate heat transfer, and excessive compressor workload contribute to increased energy demand. This study presents a comprehensive performance evaluation of water-cooled centrifugal chiller systems based on 30 operational test scenarios. Key efficiency indicators—including Coefficient of Performance (COP), Specific Energy Consumption (SEC), and isentropic efficiency—were analyzed to identify performance gaps. The results revealed COP values ranging from 1.92 to 4.07, with an average between 2.8 and 3.2, indicating suboptimal performance relative to industry benchmarks (COP > 4). SEC values between 1.07 and 1.25 kW/ton further highlight opportunities for energy optimization. High condenser pressure (>7.5 barg) and negative subcooling (-4.1 K to 0 K) were identified as major contributors to inefficiency. The study emphasizes that optimizing water flow rates and maintaining proper heat exchanger conditions can significantly improve system performance. Unlike previous research relying on AI or IoT-based diagnostics, this work adopts a practical, data-driven approach, offering actionable insights for facility managers seeking to enhance energy efficiency and operational reliability.
Co-Authors . Syamsulbahri Abd. Basir Abditama Srifitriani Abdul Latif Abdul Wahab Abdul Wahab Syakhrani Abu Muna Almaududi Ausat Agus Nursalim, Agus Ahmad Suriansyah Akhmad Dahlan Akhmad Riandy Agusta Al Ghazali, Al Ghazali Ali Zaenal Abidin Amalia, Mekar Meilisa Amjad Salong Andi Rahman ANDRI KURNIAWAN Andueriganta Fadhlihi Antono Damayanto Apra Santosa, Tomi Ardiansyah, Teddy Ari Purwanti Arief Fahmi Lubis Arief Suardi Nur Chairat Arif Saefudin Arifin, Arifin Arifin, Syaadiah Arini, Rani Eka arjang Asbaruna, Latifah Wulandari Binti Astuti, Enny Diah Azwar, Edy B.M.A.S. Anaconda Bangkara Bangun, Eka Uliyanti Putri Br Basir, Badirun Besse Arnawisuda Ningsi Budi Witjaksana, Budi cahyono, didik Cakranegara, Pandu Adi Cakranegara, Pandu Adi CNAWP, Rizal Perlambang Dara, Ravi Dedy Irfan Diana Yusuf Dodik Widarbowo Edy Nurtamam, Mohammad Efionita, Yolanda Eka Melati Elisabeth Sitepu Elvina Safitri Endang Fatmawati Endrawati, Titin Fadhlihi, Andueriganta Fatimah Malini Lubis Gogor Christmass Setyawan Guntur Putrajaya Gusti Rusmayadi Haerawan, Haerawan Harniati Haryono Haryono Herlan Suherlan, Herlan Ilham Arief Imam Jayanto Iriana Bakti Ita Soegiarto Jasiah Jasmid Edy Jatsiyah, Venti Jauhari, Burhanuddin Jayadi Jayadi Jehosua S.V. Sinolungan Jekmal Malau Joni Wilson Sitopu Judijanto, Loso Juliana, Juliana Karundeng, Deby Rita Khasanah Khasanah Khobir, Khoirul Lendra Lendra Loso Judijanto M. Zahari Machzumy, Machzumy Marbun, Rupdin Mardiati Mardiati Marjan, M Maruf, Irma Rachmawati Mas'ud Muhammadiah Massang, Berdinata Melinda Puspita Sari Jaya Meliza, Arini Michiel Martin Rumondor Miftahus Surur Muhamad Ammar Muhtadi Muhammad Ade Kurnia Harahap Muhammad Subhan Iswahyudi Muhammad Yusuf Muhtadi, Muhamad Ammar Mukhtar Efendi muriyanto, muriyanto Nana Citrawati Lestari Nanny Mayasari Nasril, Nasril Nizwardi Jalinus Novy Afanggi Pujianto Nugraha, Markus Asta Patma Nur, Rezeki Nuridah, Siti Padilah Padilah Purba, Ulfani Ikhwana Rachman, Azhariah Rais, Rinovian Ramdhan Kurniawan Rani Eka Arini Raudya Setya Wismoko Putri Retnaningsih , Rahayu Rienovita, Ellina Rizki Ramadhani Romadhon, Ismi Amalia Rukhmana, Trisna Rully Novie Wurarah Rusdianto Rusdianto, Rusdianto Santos, Luis Santosa, Tomi Apra Saryanto Saryanto Sefrizal, Levy Siregar, Ade Perdana Sri Rahayu Sudadi Suharni Sultana, Momena Supriyanto Supriyanto Suryono, Wiwid Susanti, Maria Melani Ika Tamaulina Br Sembirin Tamaulina Taufik Abdillah Syukur, Taufik Abdillah Thamrin, Andi Thomasonan Lutfie Prananto Ti Aisyah Trisna Rukhmana Ulma Tiara, Inoki Vann, Rithy Vendy Antono Wakit, Saipul Walenta, Abdi Sakti Winiasri, Linda Wirayasa, I Ketut Adi Yasir Riady Yenny Anggreini Sarumaha Yohny Anwar Yuniwati , Ika Yusda, Desi Derina Yusuf, Ramdan Yuyun Suprapto Zairin Zairin Zulkarnain, Ihwan Zunaidi, Arif Zuraida Zuraida