Field test study on operational performance of an ice storage system in a comprehensive gymnasium in hot summer and cold winter zone
Liao Ying[1] Yang Hecheng[2] Su Yangyang[1] Zhang Jiaxing[3] Jin Yanwei[3] Wang Futao[3] ,Lou Yitian[3] Ma Minghui[4] Deng Jiewen[1] Qiang Wenbo[3] Peng Chenwei[3] Wei Qingpeng[3]
This study conducts field measurements on the operational performance of an ice storage system and its key equipment in a comprehensive gymnasium located in hot summer and cold winter zone. Firstly, it summarizes the characteristic of highly variable cooling loads in gymnasium buildings due to diverse activity demands, which poses challenges for efficient HVAC system operation. The measured system COP ranges from 2.76 to 3.44 under different operating modes, with unit cooling cost at 0.11-0.15 yuan/(kWh), indicating remaining potential for energy optimization. Furthermore, the investigation identifies three critical issues: low chiller performance, suboptimal control strategies for water systems, and excessive resistance in cooling water circuits. Based on these findings, this paper proposes energy-saving optimization approaches, providing methodological references and case support for similar buildings.