COMPARISON OF ENERGY LOAD BETWEEN CHILLER WATER SYSTEM AND DX SYSTEM IN HIGH-RISE HOTEL BUILDINGS

Muhammad Fadly Saleh, Nurul Inayah

Abstract


Di Indonesia, sektor bangunan merupakan konsumen energi terbesar. Sekitar 50% dari total energi dikonsumsi oleh bangunan. Sebagian besar konsumsi energi pada bangunan digunakan untuk memenuhi kenyamanan termal. Semakin tinggi dan semakin besar bangunan, semakin sulit bangunan tersebut memenuhi kebutuhan akan kenyamanan termannya hanya dengan penghawaan alami.

Penelitian ini bertujuan untuk membandingkan beban energi antara dua sistem pengkondisian udara sentral yang umum digunakan pada bangunan tinggi, yaitu chiller water system dan Direct Expansion (DX) system yang menggunakan ducting. DX system tidak menggunakan pompa dalam prosesnya. Sehingga, pada DX system adanya pengurangan beban energi dalam penggunaan pompa. Namun, tidak diketahui pasti apakah secara keseluruhan DX system lebih hemat energi jika dibandingkan dengan chiller water system. Karena itulah penelitian ini dilakukan.

Metode penelitian yang digunakan adalah kuantitatif dengan pendekatan eksperimental melalui simulasi komputer eQUEST. Objek penelitian difokuskan pada satu lantai kamar di sebuah hotel bertingkat tinggi di Kota Makassar. Lantai yang menjadi fokus penelitian ada di lantai 10, dimana lantai ini sebagian besar ruangannya berfungsi sebagai kamar tamu.

Hasil penelitian menunjukkan bahwa chiller water system mengonsumsi energi sebesar 338.020 kWh/tahun, sedangkan DX system mengonsumsi energi sebesar 366.400 kWh/tahun. Hal ini menunjukkan bahwa chiller water system lebih baik digunakan pada bangunan hotel berlantai banyak jika dibandingkan dengan DX system, karena chiller water system lebih hemat energi sebesar 7,75% jika dibandingkan dengan DX system.

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References


Ahmed, K., Yoon, G., Ukai, M., & Kurnitski, J. (2024). VAV fan coil and demand controlled active chilled beam systems energy efficiency and thermal comfort performance comparison in a Japanese office building. E3S Web of Conferences, 562, 1–12. https://doi.org/10.1051/e3sconf/202456206004

Ahyadi, H., & Aghna, T. (2024). PERANCANGAN SISTEM TATA UDARA RUANG ISOLASI RUMAH SAKIT X YOGYAKARTA. In PRESISI (Vol. 26, Issue 1).

Anne Lee. (2025, August 29). Direct Expansion (DX) Type of Central Air Conditioning. Https://Www.Mytcwgroup.Com/Post/Direct-Expansion-Dx-Type-of-Central-Air-Conditioning.

Arifin, Z., Fachruroji, & Huda, M. (2024). Increasing performance of chiller systems in high-rise buildings by load optimization. International Journal of Applied Power Engineering, 13(1), 113–122. https://doi.org/10.11591/ijape.v13.i1.pp113-122

Chen, X., Zhang, N., Su, Y., Aydin, D., Zheng, H., Bai, H., Georgakis, A., Jarimi, H., & Riffat, S. (2019). Performance analysis and design implementation of a novel polymer hollow fiber liquid desiccant dehumidifier with aqueous potassium formate. Thermal Science and Engineering Progress, 13, 100366. https://doi.org/10.1016/J.TSEP.2019.100366

Deng, J., He, S., Wei, Q., Liang, M., Hao, Z., & Zhang, H. (2020). Research on systematic optimization methods for chilled water systems in a high-rise office building. Energy and Buildings, 209, 109695. https://doi.org/10.1016/J.ENBUILD.2019.109695

Firoozi, A. A., Firoozi, A. A., Oyejobi, D. O., Avudaiappan, S., & Flores, E. S. (2024). Emerging trends in sustainable building materials: Technological innovations, enhanced performance, and future directions. Results in Engineering, 24, 103521. https://doi.org/10.1016/J.RINENG.2024.103521

González-Torres, M., Pérez-Lombard, L., Coronel, J. F., Maestre, I. R., & Yan, D. (2022). A review on buildings energy information: Trends, end-uses, fuels and drivers. Energy Reports, 8, 626–637. https://doi.org/10.1016/J.EGYR.2021.11.280

Jing, S., Lei, Y., Wang, H., Song, C., & Yan, X. (2019). Thermal comfort and energy-saving potential in university classrooms during the heating season. Energy and Buildings, 202, 109390. https://doi.org/10.1016/J.ENBUILD.2019.109390

Kim, H. U., & Jong, S. Il. (2020). Development of a system for evaluating the flow field around a massive stadium: Combining a microclimate model and a CFD model. Building and Environment, 172, 106736. https://doi.org/10.1016/J.BUILDENV.2020.106736

Lachheb, M., Younsi, Z., Youssef, N., & Bouadila, S. (2024). Enhancing building energy efficiency and thermal performance with PCM-Integrated brick walls: A comprehensive review. Building and Environment, 256, 111476. https://doi.org/10.1016/J.BUILDENV.2024.111476

Lamberti, G., Salvadori, G., Leccese, F., Fantozzi, F., & Bluyssen, P. M. (2021). Advancement on thermal comfort in educational buildings: Current issues and way forward. Sustainability (Switzerland), 13(18). https://doi.org/10.3390/su131810315

Lamichhane, S., Mostafa, R., Gopalakrishnan, B., & Devaru, D. G. (2024). eQUEST Based Building Energy Modeling Analysis for Energy Efficiency of Buildings. Energy Engineering, 121(10), 2743–2767. https://doi.org/10.32604/EE.2024.051035

Latif, H., Hultmark, G., Rahnama, S., Maccarini, A., & Afshari, A. (2022). Performance evaluation of active chilled beam systems for office buildings – A literature review. Sustainable Energy Technologies and Assessments, 52, 101999. https://doi.org/10.1016/J.SETA.2022.101999

Marjianto, A., & Mangindaan, D. (2020). Perancangan Sistem Tata Udara Ditinjau dari Aspek Energi dan Biaya pada Bangunan Hotel di Semarang.

Maya Sari Wahyuni, Zaki, A., Hidayat, S., & Pratama, M. I. (2024). Penerapan Metode ARIMA dalam Meramalkan Kebutuhan Energi Listrik di Kota Makassar. Journal of Mathematics, Computations and Statistics, 7(2), 323–331. https://doi.org/10.35580/jmathcos.v7i2.4388

Merema, B., Delwati, M., Sourbron, M., & Breesch, H. (2018). Demand controlled ventilation (DCV) in school and office buildings: Lessons learnt from case studies. Energy and Buildings, 172, 349–360. https://doi.org/10.1016/J.ENBUILD.2018.04.065

Muzayanah, I. F. U., Lean, H. H., Hartono, D., Indraswari, K. D., & Partama, R. (2022). Population density and energy consumption: A study in Indonesian provinces. Heliyon, 8(9). https://doi.org/10.1016/j.heliyon.2022.e10634

Ni, S., Zhu, N., Hou, Y., & Zhang, Z. (2023). Research on indoor thermal comfort and energy consumption of zero energy wooden structure buildings in severe cold zone. Journal of Building Engineering, 67, 105965. https://doi.org/10.1016/J.JOBE.2023.105965

Rahman, M. M., & Vu, X. B. (2021). Are energy consumption, population density and exports causing environmental damage in china? Autoregressive distributed lag and vector error correction model approaches. Sustainability (Switzerland), 13(7). https://doi.org/10.3390/su13073749

Saleh, M. F., Helen, Y., & Anita, F. (2022). 826-Article Text-2935-1-10-20221010 (1). TECNOSCIENZA, 7, 176–190. https://doi.org/https://doi.org/10.51158/tecnoscienza.v7i1.826

Seo, B., Yoon, Y. B., Yu, B. H., Cho, S., & Lee, K. H. (2020). Comparative analysis of cooling energy performance between water-cooled VRF and conventional AHU systems in a commercial building. Applied Thermal Engineering, 170, 114992. https://doi.org/10.1016/J.APPLTHERMALENG.2020.114992

Suamir, I. N., Temaja, I. W., Putu, I., & Indra, E. (2021). Journal of Applied Mechanical Engineering and Green Technology Analisis perbandingan berbagai sistem AC komersial pada aplikasi gedung hotel. 2, 128–134.

Taki, A., & Zakharanka, A. (2023). The Impact of Degradation on a Building’s Energy Performance in Hot-Humid Climates. Sustainability (Switzerland) , 15(2). https://doi.org/10.3390/su15021145

UCL, BPIE, UNEP CCC, I. (2025). United Nations Environment Programme. Https://Globalabc.Org/. https://globalabc.org/index.php/resources/publications/global-status-report-buildings-and-construction-20242025-not-just-another

Ye, Y., Hinkelman, K., Lou, Y., Zuo, W., Wang, G., & Zhang, J. (2021). Evaluating the energy impact potential of energy efficiency measures for retrofit applications: A case study with U.S. medium office buildings. Building Simulation, 14(5), 1377–1393. https://doi.org/10.1007/s12273-021-0765-z

Zahir, M. H., Irshad, K., Shafiullah, M., Ibrahim, N. I., Kausarul Islam, A. K. M., Mohaisen, K. O., & Sulaiman, F. A. A. (2023). Challenges of the application of PCMs to achieve zero energy buildings under hot weather conditions: A review. Journal of Energy Storage, 64, 107156. https://doi.org/10.1016/J.EST.2023.107156

Zhu, Q., Zhuang, M., Liu, H., & Zhu, Y. (2022). Optimal Control of Chilled Water System Based on Improved Sparrow Search Algorithm. Buildings, 12(3). https://doi.org/10.3390/buildings12030269




DOI: https://doi.org/10.17509/jaz.v9i1.95696

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