储能科学与技术 ›› 2025, Vol. 14 ›› Issue (5): 1991-1999.doi: 10.19799/j.cnki.2095-4239.2025.0018

• 储能系统与工程 • 上一篇    下一篇

准二级压缩耦合储能装置的空气源热泵性能研究

李勇1,2(), 赵雨菲1, 宋春雨1, 刘世豪1, 马素霞1,2()   

  1. 1.太原理工大学电气与动力工程学院
    2.煤电清洁控制教育部重点实验室，山西 太原 030024
  • 收稿日期:2025-01-06 修回日期:2025-02-02 出版日期:2025-05-28 发布日期:2025-05-21
  • 通讯作者: 马素霞 E-mail:yongli@tyut.edu.cn;masuxia@tyut.edu.cn
  • 作者简介:李勇（1987—），男，博士研究生，研究方向为热泵技术，E-mail：yongli@tyut.edu.cn；
  • 基金资助:
    山西省重点研发计划项目(202302060301008)

Research on the performance of air source heat pumps with quasi-two-stage compression coupled energy storage devices

Yong LI1,2(), Yufei ZHAO1, Chunyu SONG1, Shihao LIU1, Suxia MA1,2()   

  1. 1.College of Electrical and Power Engineering, Taiyuan University of Technology
    2.Key Laboratory of Cleaner Intelligent Control on Coal & Electricity, Ministry of Education, Taiyuan 030024, Shanxi, China
  • Received:2025-01-06 Revised:2025-02-02 Online:2025-05-28 Published:2025-05-21
  • Contact: Suxia MA E-mail:yongli@tyut.edu.cn;masuxia@tyut.edu.cn

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摘要：

针对空气源热泵在低温环境下性能衰减问题，本工作提出了一种准二级压缩耦合储能装置的空气源热泵系统，其中储能装置是利用相变材料在相变过程中吸收或释放大量潜热的相变蓄热器，它可在相对稳定的温度区间内高效蓄热。借助实验方法测试了该系统在不同环境温度下的制热能力、性能系数(COP)、制冷剂质量流量、排气温度和能效方面的一系列参数，并对其经济性进行了分析。实验结果表明：随着环境温度的降低，制冷剂的质量流量和制热量显著降低。然而与常见带经济器的系统相比，准二级压缩与储能装置耦合系统COP、制热量和㶲效率即使在恶劣环境温度下仍表现出强劲优势，在-30°C的环境温度下，耦合系统的COP显著提高了39.9%，制热量提升了43.46%，㶲效率改善了41.8%，日运行成本费用降低4.63元，其中严寒气候条件下日运行成本减小11%，运行成本费用合理，具备很强的市场竞争力。此外，在-5～-30 ℃的环境温度范围内，排气温度可降低4.55～12.78 ℃，制冷剂的质量流量可增加11.8%～48.7%。

关键词: 准二级压缩, 相变储能装置, 经济器, 空气源热泵, 制热性能

Abstract:

To address the performance degradation of air source heat pumps in low-temperature environments, this paper proposes an air source heat pump system featuring quasi-two-stage compression coupled with an energy storage device. The energy storage device is a phase change heat accumulator that uses phase change materials to absorb or release large amounts of latent heat during the phase change process. This allows for efficient heat storage within a relatively stable temperature range. Key parameters, including heating capacity, coefficient of performance (COP), refrigerant mass flow, exhaust temperature, and system energy efficiency at different ambient temperatures, were experimentally tested. The economic performance of the system was also analyzed. Experimental results revealed that with decreasing ambient temperature, both the refrigerant mass flow rate and heat production significantly reduced. However, when compared to conventional systems with economizers, the proposed quasi-two-stage compression and energy storage coupling system demonstrated superior performance in terms of COP, heat generation, even in harsh ambient temperatures. At an ambient temperature of -30 ℃, the COP, heat generation, and the exergic efficiency of the coupled system increased significantly by 39.9%, 43.46%, and 41.8%, respectively. The daily operating costs were reduced by 4.63 yuan, including an 11% reduction under cold weather conditions, showcasing the system's economic feasibility and strong market competitiveness. In addition, in the ambient temperature range of -5 ℃ to -30 ℃, the exhaust temperature was lowered by 4.55—12.78 ℃, while the refrigerant mass flow rate increased by 11.8%—48.7%.

Key words: quasi-two-stage compression, phase change energy storage device, economizer, air source heat pump, heating performance

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