摘要
从能源效率的角度对欧洲和中国的大型冷库典型制冷系统进行对比。通过与世界先进水平的制冷系统对比,寻求提高我国大型冷库制冷系统效率的潜在可能性。通过从制冷系统控制的角度对国内大型冷库制冷系统可能存在的高能耗因素进行分析,并介绍了多种节能手段,如自动热气除霜、电动液位控制、温度精确控制等。根据这些提升手段,采用软件模拟的方法,对比了中国传统的采用手动控制制冷系统的冷库和经过改进的制冷系统自动控制冷库之间的能耗差异,并结合国内某新旧冷库的数据对比,分析了提升制冷系统自动控制水平后为冷库节能带来的能效提升情况。
Analysis of energy consumption of cold stores in China and Europe indicates that there is a good potential for energy efficiency improvement in Chinese cold stores in general. Causes for low energy efficiency of typical refrigeration systems in China cold storage have been analyzed with focus on control of a refrigeration system. An overall evaluation of state of the art refrigeration system in comparison to common practice in China today has been performed. Some opportunities for enhancing automatic control systems to improve energy efficiency, such as defrost, temperature control and liquid level control have been introduced. Further, a simulation compared between typical manual system in China and improved automatic control has been performed. Finally, several case studies have been considered to illustrate the feasibility to apply automatic solutions in China.
出处
《冷藏技术》
2017年第4期1-6,共6页
Journal of Refrigeration Technology
关键词
冷库
制冷系统
自动控制
能效
热气除霜
液位控制
温度控制
cold storage
refrigeration system
automatic control
energy efficiency
hot gas defrost
liquid level control
temperature control
