Energy Management for an Air Conditioning System Using a Storage Device to Reduce the On-Peak Power Consumption

Wunvisa Tipasri, Amnart Suksri, Karthikeyan Velmurugan and Tanakorn Wongwuttanasatian ()
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Wunvisa Tipasri: Department of Mechanical Engineering, Faculty of Engineering, Khon Kaen University, 123 Mittrapharp Rd., Khon Kaen 40002, Thailand
Amnart Suksri: Centre for Alternative Energy Research and Development, Khon Kaen University, 123 Mittrapharp Rd., Khon Kaen 40002, Thailand
Karthikeyan Velmurugan: Department of Mechanical Engineering, Faculty of Engineering, Khon Kaen University, 123 Mittrapharp Rd., Khon Kaen 40002, Thailand
Tanakorn Wongwuttanasatian: Department of Mechanical Engineering, Faculty of Engineering, Khon Kaen University, 123 Mittrapharp Rd., Khon Kaen 40002, Thailand

Energies, 2022, vol. 15, issue 23, 1-19

Abstract: To reduce the on-peak electrical power consumption, storage devices are widely performed with the help of an energy management system. According to IEA, residential air conditioning consumes 70% of the electricity, increasing by 4% every year. To minimize peak power consumption, thermal energy storage (TES) can be used to store cooled water for the air conditioning system. An efficient chilled water tank was designed and computationally investigated. Three-dimensional cylindrical tanks were simulated with seven different heights to diameter (H:D) ratios. At first, the temperature changes in a chilled water tank during discharging and charging periods were studied. An 11-h charging period was carried out during the off-peak time at night, while the discharging period was 13 h during the daytime. Under time constraints regarding peak and off-peak periods, a tank with an H:D = 2.0 can only be used for 13-h discharging. Then the chilled water was simulated with a set temperature of 4 °C during the charging. This resulted in the system being usable for six days, after which it had to be stopped for longer charging. A storage tank with an H:D ratio of 2.0 was found to be suitable for an air conditioning system. If six days of operations (one day off) were used, it could save 15.38% of electrical energy consumption and 51.65% of electricity cost. This saving leads to a 5.55-year payback period.

Keywords: energy management; green batteries; energy saving; on-peak power reduction; efficient air-conditioning (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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