冷热组合型超市系统的设计与经济性分析  

Design and economics analysis on CCHHR system in supermarket

作　　者：宁静红[1] 李惠宇[1] 彭苗[1] 

机构地区：[1]天津商业大学制冷系

出　　处：《上海节能》2007年第4期16-20,共5页Shanghai Energy Saving

摘　　要：设计了冷热组合型超市系统,利用CO2跨临界循环对空间夏季供冷和冬季供热,采用R290/CO2复叠式制冷循环对食品冷冻冷藏,同时回收CO2跨临界循环高温气体散发的热量和R290/CO2复叠式制冷循环R290高温循环气体的冷凝热,实现夏季空间供冷、食品制冷的同时供应生活热水,冬季空间供暖、食品制冷的同时供应生活热水,及春秋季节食品制冷同时供应生活热水。并与供冷、供暖、食品制冷和供应生活热水分别进行的常规R404A超市系统的能效相比较,得出冷热组合型超市系统的能耗大大降低,能效明显增加,不仅节约能源,而且保护环境,是很有发展前景的绿色环保系统。In this paper, a combined space cooling, space heating, water heating and food refrigeration （CCHHR） system used in supermarket is designed. This system provides cooling for space in summer and provides heating for space in winter by using CO2 transcritical cycle. A R290/CO2 cascaded refrigeration cycle using R290 as the refrigerant for the higher temperature cycle and CO2 as the refrigerant for the lower temperature cycle is used for food refrigeration. The cooling heat emitted from hot CO2 gas of CO2 transcritical cycle and condensation heat emitted from R290 cycle is recovered by heat recovery system. It not only reduces the heatpollution but also provides hot water. So this system have three running mode, provides cooling space, hot water and food refrigeration in summer, provides heating space, hot water and food refrigeration in winter, provides hot water and food refrigeration in spring as well as autumn. Moreover, this system is compared with typical conventional supermarket technology that provides cooling space, heating space, hot water and food refrigeration respectively. It is obtained that the energy consumption in the CCHHR system is reduced largely and energy efficiency is increased obviously. It can be concluded that the CCHHR system in supermarket has a good future for protecting environment and saving energy.

关 键 词：组合系统 超市 CO2跨临界循环 R290/CO2复叠式制冷循环 热回收 

分 类 号：TU831[建筑科学—供热、供燃气、通风及空调工程]