集成式CO_(2)超市制冷系统的研究进展

Latest research progress of integrated CO_(2) supermarket refrigeration system

由于良好的环境性能和热力学性能,天然制冷剂CO_(2)在商业集成制冷系统中逐渐得到推广应用,本文归纳了集成式CO_(2)超市制冷系统的最新研究进展。首先对目前CO_(2)超市制冷系统中主要的热回收方式以及控制策略进行了汇总;随后对集成的空气调节功能进行了介绍,主要包括其与不同循环优化措施结合的效果;最后对目前应用较广的“多合一”CO_(2)超市制冷系统的应用情况进行了介绍。结果表明:采用热回收能够有效满足超市的热水需求以及供暖负荷,同时相比于传统供暖方式,能耗可以下降7.5%~12.9%;对集成的空气调节功能,其季节能效比能够达到4.0以上;对“多合一”CO_(2)超市制冷系统,超市的制冷、供暖和空气调节负荷都可以由CO_(2)系统来提供,并且优化后的系统能够有效减少系统的占地面积及温室气体排放量。

Because of good environmental and thermal performance of natural refrigerant CO_(2),it is gradually popularized and applied in commercial integrated refrigeration system.The research progress of integrated CO_(2) supermarket refrigeration system was summarized.Firstly,current application methods and research on control strategies for heat recovery were summarized.Secondly,integrated air-conditioning function was studied and the effect of combining it with different cycle optimization measures was analyzed.Finally,the application of all-in-one CO_(2) refrigeration system was introduced.The results indicate that heat recovery can be adopted to effectively meet the hot water demand and heating demand of supermarket.At the same time,compared with traditional heating methods,its energy consumption can be reduced by 7.5%~12.9%.For the integrated air-conditioning function,its seasonal energy efficiency ratio can reach more than 4.0.For the all-in-one solution,the supermarket’s refrigeration,heating and air conditioning loads all can be provided by the CO_(2) system,and the energy consumption and greenhouse gas emissions can be significantly reduced with the optimized refrigeration system.