基于相变蓄冷技术的冷库供冷系统性能分析  

Performance Analysis of Cold Storage Cooling System Based on Phase Change Thermal Energy Storage Technology

作　　者：童山虎 廖良金 李子潇 胡晓微 王达[2] 杨相政[2] TONG Shanhu;LIAO Liangjin;LI Zixiao;HU Xiaowei;WANG Da;YANG Xiangzheng(CRRC Shijiazhuang Co,Ltd.,Shijiazhuang 050000,China;Jinan Fruit Research Institute,All-China Federation of Supply and Marketing Cooperatives,Jinan 250000,China)

机构地区：[1]中车石家庄车辆有限公司,河北石家庄050000 [2]中华全国供销合作总社济南果品研究所,山东济南250000

出　　处：《中国果菜》2024年第5期27-32,共6页China Fruit & Vegetable

基　　金：山东省重点研发计划项目(2022TZXD0022)。

摘　　要：针对现有冷库能耗高的问题,本研究提出了一种基于相变蓄冷技术的冷库供冷系统,通过在电价较低的谷电时段利用蓄冷设备储存冷量,在电价较高的尖电时段释放冷量。对系统冷负荷、蓄冷量、相变材料的用量及流量等关键参数进行了设计计算,并开展了系统运行性能分析。结果表明,与传统风冷直冷型冷库系统相比,该系统在尖峰时段的日均用电量降低了88.6%,高峰时段降低了81.9%,日均用电量节能率高达18.69%,同时日均电费成本降低了46.72%。此外,压缩机的日均启停次数减少了72.48%,系统运行的稳定性得到了改善,有效延长了设备的使用寿命,降低了维护成本,在增强系统稳定性、降低能耗和运行成本方面具有明显优势。To address the issue of high energy consumption in existing cold storage facilities,this study proposed a cold storage cooling system based on phase change thermal energy storage technology.The system stored cold energy during off-peak hours when electricity prices were low and releases it during peak hours when electricity prices were high.This paper designed and calculated key parameters such as system cooling load,cold storage capacity,phase change material usage,and flow rate,and conducted a performance analysis of the system's operation.The results showed that compared to traditional air-cooled direct cooling systems,this system reduced daily average electricity consumption by 88.6%during peak hours and 81.9%during high-peak hours,with an energy-saving rate of 18.69%.Additionally,the daily average electricity cost was reduced by 46.72%.Furthermore,the daily average number of compressor startups was decreased by 72.48%,improving the system’s stability,effectively extending the service life of equipment,and reducing maintenance costs.This system had significant advantages in enhancing system stability,reducing energy consumption,and lowering operating costs.

关 键 词：冷库 相变蓄冷 系统设计与计算 电费成本 压缩机启停频次 

分 类 号：TK124[动力工程及工程热物理—工程热物理]