跨临界CO_(2)热泵循环能效、经济性与环境性分析  

Analysis of energy efficiency, economy and environment of transcritical CO_(2) heat pump cycle

作　　者：张浩[1] 唐培智 彭旭[1] 王光辉[1] 王定标[1] Zhang Hao;Tang Peizhi;Peng Xu;Wang Guanghui;Wang Dingbiao(School of Mechanical and Power Engineering,Zhengzhou University,Zhengzhou 450001,China)

机构地区：[1]郑州大学机械与动力工程学院,郑州450001

出　　处：《低温与超导》2023年第2期60-67,共8页Cryogenics and Superconductivity

基　　金：国家自然科学基金(21576245);中国博士后科学基金(2022M712855)资助。

摘　　要：为研究不同循环初始投资成本、生命周期成本及环境影响因子的区别,以及不同循环在不同运行工况下的性能。建立单级CO_(2)热泵循环(SSHP)、带回热器的单级CO_(2)热泵循环(SSICHP)、双级CO_(2)热泵循环(TSHP)、带回热器的双级CO_(2)热泵循环(TSICHP)的热力学、经济性和环境性模型,并建立多目标综合评价体系。结果表明:SSICHP、TSHP、TSICHP的热力学性能及环境影响因子较SSHP有所提升,双级压缩的能效比较单级压缩提高15%以上,但初始投资成本增加;在SSHP和TSHP中加入回热器后,初始投资成本分别降低2%、6.6%,生命周期成本分别降低5%、11.2%;SSICHP的经济性较好,TSICHP的能效比及环境性较好。In order to study the difference among the initial investment cost, life cycle cost and environmental impact factor of different cycles and as well as to study performance of different cycles under different operating conditions, four cycle models of the thermodynamic, economic and environment, i.e., single-stage CO_(2)heat pump(SSHP), single-stage CO_(2)heat pump with internal heat exchanger(SSICHP), two-stage CO_(2)heat pump cycle(TSHP) and two-stage CO_(2)heat pump with internal heat exchanger cycle(TSICHP) were established, and the multi-objective comprehensive evaluation system was also established. The results show that the thermodynamic properties and environmental factors of SSICHP, TSHP and TSICHP are improved compared with that of SSHP. The energy efficiency of two-stage heat pump cycle is more than 15% higher than that of single-stage heat pump cycle, but the initial investment cost is increased. After adding internal heat exchanger in SSHP and TSHP, the initial investment cost of the two cycles is reduced by 2% and 6.6% respectively, and the life cycle cost is reduced by 5% and 11.2% respectively. The economy of SSICHP is better, and the energy efficiency ratio and environment of TSICHP are better.

关 键 词：跨临界CO_(2) 热泵 数值计算 能效 经济性 环境性 

分 类 号：TB611[一般工业技术—制冷工程]