@article{Huang2025, 
author = {Junjie Huang and Caihua Liang and Hui He and Xi Bai and Yubo Mao and Qi Tang},
title = {Energy-Saving Optimization Strategy Research for Chilled Water Units Based on Active Water Storage},
year = {2025},
journal = {Journal of Refrigeration},
volume = {46},
number = {1},
pages = {108-115},
keywords = {load distribution, water thermal storage, chiller sequencing control, energy-saving operation strategy, central air-conditioning},
url = {https://www.sciopen.com/article/10.12465/j.issn.0253-4339.2025.01.108},
doi = {10.12465/j.issn.0253-4339.2025.01.108},
abstract = {An energy-saving optimization operation strategy based on maintaining the high-energy-efficiency operation of chillers is proposed to address the prevalent issue of increased energy consumption in the application of cold-storage technology for economic optimization in the current air-conditioning industry. This strategy involves the storage and release of cooling using small cold-storage tanks to actively control the load ratio of the water chiller, thus ensuring that the unit operates efficiently for an extended period to achieve energy savings. A physical model of the air-conditioning system is established and simulated using operational data from the central air-conditioning system of a hospital. Performance curves of the water chiller under different environmental conditions are obtained to accurately depict the high-efficiency operational states of the unit at each moment. On a typical day with a peak cooling load of 9979 kW, using an active chilled-water storage system, as compared with using the conventional chiller operation strategy without active storage, can reduce 2777 kW·h of daily electricity consumption, which constitutes 6.0% of the daily electricity usage of the central air-conditioning system. Over the entire cooling season, this approach can save 2.35% of the total electricity consumption of the central air-conditioning system and 4.45% of the electricity consumption of the chiller.}
}