Citation

Rahman, Md.Anisur and Sadeque, Md. Golam and Kundu, Diponkar and Hasan, Md. Galib and Iftekharul Ferdous, A.H.M. and Sarker, Md. Tanjil (2025) Temperature-Based Current Estimation for Water-Cooled Chillers. In: 2025 7th International Conference on Electrical Information and Communication Technology (EICT), 18-20 December 2025, Khulna, Bangladesh.

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Abstract

Air conditioning systems account for a large share of a conditioned zone’s total energy consumption when compared with other devices. Accurate modeling of thermodynamics and electromechanical dynamics of such energy-consuming systems is very complex. In such cases, parameter prediction using historical data has gained much popularity due to its simplicity and effectiveness. In this study, we identified an inconsistency in chiller operation by assessing the relationship between temperature and electric current. As an experimental platform, data from a single water-cooled chiller at East West University (EWU) on the main campus have been studied. Current consumption has been predicted by deriving a relationship from a historical dataset of current and temperature. Current estimation using a historical dataset of temperature has been performed using two different methods: i) multiplication of the present temperature function with the average of current to temperature function ratios found from the historical data, and ii) multiplication of the temperature function with a temperature function-based polynomial, where the coefficients are computed by applying the least square method on the historical temperature data. The estimated currents have been compared with the original current data, and the mean absolute error (MAE) has been computed to evaluate the suitability of the derived temperature-current relationships and the curve-fitting methods for current prediction. This predictive current modeling will help efficiently compute the required power and predict any abnormal conditions in a water-cooled chiller.

Item Type:	Conference or Workshop Item (Paper)
Uncontrolled Keywords:	chiller, temperature, current, regression, multiplier
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK7800-8360 Electronics > TK7871 Electronics--Materials
Divisions:	Faculty of Engineering (FOE)
Depositing User:	Ms Suzilawati Abu Samah
Date Deposited:	20 Apr 2026 01:27
Last Modified:	20 Apr 2026 01:27
URII:	http://shdl.mmu.edu.my/id/eprint/15742

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