Experimental and Numerical Optimization on Chilled Water Configuration for Improving Temperature Performance and Economic Viability of a Centralized Chiller Plant

Suamir, I Nyoman and Sudirman, Sudirman and Ardita, I Nengah and Santanu, Gede (2020) Experimental and Numerical Optimization on Chilled Water Configuration for Improving Temperature Performance and Economic Viability of a Centralized Chiller Plant. In: International Conference on Applied Science and Technology (iCAST on Engineering Science), 24 - 25 Octobre 2019, Bali, Indonesia.

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Official URL: https://iopscience.iop.org/article/10.1088/1742-65...

Abstract

This research aimed to simulate and optimize chilled water circuit system of a central air conditioning plant applied for a five-star hotel in Bali Island, Indonesia. This optimization was performed because temperature of chilled water distributed to the loading system could not satisfy room temperature requirement. Detailed measurements have been taken on the AC system included refrigeration system of the chillers, chilled water and cooling water distribution, cooling load, heat rejection and pumping systems. Thermodynamic analyses on the system energy performance were carried out. Numerical simulations were also established to evaluate chilled water flow rate in the primary and secondary circuits. The measurement and simulation results showed there was unbalanced chilled water flow rate between primary and secondary circuits and the chilled water flow rate did not comply with rule of flow 'primary flow must always be equal to or greater than secondary flow' resulted in the cooling load coils lost their cooling capability. Optimization on the chilled water flow rate between primary and secondary circuits by implementing variable speed pumping system incorporated balancing valve was estimated to be potentially improve temperature performance and economic viability of the chiller plant operation.

Item Type: Conference or Workshop Item (Paper)
Subjects: Ilmu Teknik > Ilmu Keteknikan Industri > Teknik Mesin (dan Ilmu Permesinan Lain)
Ilmu Teknik > Ilmu Keteknikan Industri > Teknik Refrigerasi
Divisions: Jurusan Teknik Mesin > Prodi Teknologi Rekayasa Utilitas > Publikasi
Depositing User: I Nyoman Suamir
Date Deposited: 16 May 2023 07:55
Last Modified: 16 May 2023 07:55
URI: http://repository.pnb.ac.id/id/eprint/5920

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