北京市某区域集中供冷蓄冷系统的应用与分析

Application andanalysis of centralized cooling and storage system in a district of Beijing

近年来,随着社会生产力的提高,区域集中供冷在我国取得了较快的发展。本文分析探讨了区域供冷中3种蓄冷方案(动态冰蓄冷、外融冰蓄冷、水蓄冷)的特点,并以北京市某区域供冷项目为例,介绍了3种蓄冷系统的规模、装机配置、组成等,同时进行了经济分析,提出了适合本项目的蓄冷方案:动态冰蓄冷系统与外融冰蓄冷系统耦合供冷。并就动态冰蓄冷方案中遇到的“冰堵”难点及蓄冰池蓄冷、蓄热出现的热胀冷缩安全问题提出了解决办法。对今后区域集中供冷系统的建设提供了参考。

In recent years,with the improvement of social productivity,regional centralized cooling system has made rapid development in China.In this paper,the characteristics of three kinds of storage schemes(dynamic ice storage,external melting ice storage and water storage)for regional cooling are analyzed and discussed.Taking a regional cooling project in Beijing as an example,the scale,installation configuration and composition of three kinds of storage systems are introduced.At the same time,economic analysis is carried out,and a suitable storage scheme for this project is put forward:coupled cooling of dynamic ice storage system coupled with external melting ice storage system.The difficulties of“ice blockage”in dynamic ice storage scheme and the safety problems of thermal expansion and contraction in ice storage pond are also discussed.which provides a reference for the future construction of regionally centralized refrigeration system.