化工学报 ›› 2020, Vol. 71 ›› Issue (S1): 51-56.DOI: 10.11949/0438-1157.20191137

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将CO2、R170和R41应用于跨临界空气源热泵热水器系统的性能对比研究

  

  1. 安徽工业大学建筑工程学院,安徽 马鞍山 243002
  • 收稿日期:2019-10-08 修回日期:2019-11-15 出版日期:2020-04-25 发布日期:2020-04-25
  • 作者简介:王栋(1981—),男,博士,讲师,wangdong224545@163.com
  • 基金资助:
    国家自然科学基金项目(51608001);安徽省高校自然科学研究重点项目(KJ2017A055)

Comparison of air-source heat pump water heater performance with transcritical cycle using CO2, R170 and R41 as refrigerant

Dong WANG(),Yaru LIU,Zhuo CHEN,Zunli KOU,Yuehong LU   

  1. School of Civil Engineering and Architecture, Anhui University of Technology, Ma’anshan 243002,Anhui, China
  • Received:2019-10-08 Revised:2019-11-15 Online:2020-04-25 Published:2020-04-25
  • Contact: Dong WANG

摘要:

基于一套空气源热泵热水器系统,首先建立了相关的热力学参数计算模型,之后将CO2、R170和 R41这3种制冷剂分别应用于该系统,并对跨临界循环的热力学性能及效率进行计算,最后对各性能参数进行详细对比。研究结果表明:在同样的工况下对比COPheat效率,R41系统分别比CO2系统提升了31.77%和23.34%,而R170系统则提升了4.9%和3.6%;R41和R170在提升系统制热量方面也具有明显的优势;R41和R170的系统最优运行高压也比CO2系统分别降低了35%和43%。因此,除了CO2外,R41和R170也是另外2种很有潜力的应用于跨临界循环的制冷剂。

关键词: 空气源热泵热水器, 跨临界循环, CO2, R41, R170, 性能,

Abstract:

On the basis of an air-source heat pump water heater (ASHPWH) system, a thermodynamic model used to calculate system performance is developed. Then, the performances and exergy efficiencies of a transcritical cycle with CO2, R170 and R41 are investigated and compared. The results indicate that the COPheat and exergy efficiencies of R41 (R170) system are about 31.77% (4.9%) and 23.34% (3.6%) higher than that of CO2 system under the same condition. R41 and R170 also have obvious advantages in increasing the heating capacity. Moreover, the optimum high pressure of systemwith R41 (R170) is more than 35% (43%) lower compared to that with CO2. So, besides CO2, R41 and R170 are also promising refrigerants for an ASHPWH system.

Key words: ASHPWH, transcritical cycle, CO2, R41, R170, performance, enthalpy, exergy

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