双源压缩-喷射复合热泵系统构建及特性分析

doi:10.11949/0438-1157.20241332

化工学报 ›› 2025, Vol. 76 ›› Issue (S1): 36-42.DOI: 10.11949/0438-1157.20241332

双源压缩-喷射复合热泵系统构建及特性分析

周有苗¹(), 刘晔¹^,³(), 余锋², 罗小钰², 王斌辉²

^1.西安交通大学能源与动力工程学院，陕西西安 710049
^2.浙江永和制冷股份有限公司，浙江衢州 324000
^3.西安交通大学深低温技术与装备教育部重点实验室，陕西西安 710049

收稿日期:2024-11-21 修回日期:2024-11-22 出版日期:2025-06-25 发布日期:2025-06-26
通讯作者: 刘晔
作者简介:周有苗（2000—），女，硕士研究生，youmiaozhou@stu.xjtu.edu.cn
基金资助:
中央高校基本科研业务项目(XZY012023081);西安市科技计划项目(24NYGG0041)

Analysis of a novel dual heat source compression-ejection hybrid heat pump system

Youmiao ZHOU¹(), Ye LIU¹^,³(), Feng YU², Xiaoyu LUO², Binhui WANG²

^1.School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, China
^2.Zhejiang Yonghe Refrigeration Co. , Ltd. , Quzhou 324000, Zhejiang, China
^3.MOE Key Laboratory of Cryogenic Technology and Equipment, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, China

Received:2024-11-21 Revised:2024-11-22 Online:2025-06-25 Published:2025-06-26
Contact: Ye LIU

摘要/Abstract

摘要：

太阳能间歇式供能导致的连续制热能力差及运行能效低是太阳能直膨式热泵技术亟需解决的技术瓶颈。提出一种能充分利用太阳能热属性和动力属性的新型双热源压缩-喷射复合热泵（FB-EHPC），通过创新引入闪蒸罐提高低蒸发温度下系统的加热能力，实现循环性能改善。建立FB-EHPC循环的热力学分析模型，以R134a为循环工质，研究在不同工况下的系统性能变化，并在不同工况下与增压器辅助的喷射热泵循环（B-EHPC）进行比较。研究结果表明，相比B-EHPC系统，FB-EHPC系统的㶲效率和COP均有较大的提升，在设计工况下，与B-EHPC相比，FB-EHPC的COP提高16.64%，㶲效率提高6.03%。

关键词: 热泵, 喷射器, 能量分析, ?分析

Abstract:

The technical bottleneck that solar intermittent energy supply limits the continuous heating capacity and energy efficiency ratio of solar direct expansion heat pumps urgently need to be solved. In this paper, a flashing booster-assisted ejector heat pump cycle (FB-EHPC) is proposed. The flash tank can separate steam and liquid after partial expansion, effectively reduce the discharge temperature of the compressor and improve the mass flow rate of refrigerant steam in the high pressure loop, which is conducive to improving the heating capacity at low evaporation temperature and realize the improvement of cycle performance. In this paper, a thermodynamic analysis model of FB-EHPC cycle was established, and R134a was used as the working medium to study the system performance changes under different working conditions, and a comparison was made with B-EHPC under different working conditions. Exergy efficiency and COP of FB-EHPC system increased significantly compared with B-EHPC system. Exergy efficiency increased by 6.03% while COP of FB-EHPC system increased by 16.64% in design condition.

Key words: heat pump, ejector, energy analysis, exergy analysis

中图分类号:

TB 131

周有苗, 刘晔, 余锋, 罗小钰, 王斌辉. 双源压缩-喷射复合热泵系统构建及特性分析[J]. 化工学报, 2025, 76(S1): 36-42.

Youmiao ZHOU, Ye LIU, Feng YU, Xiaoyu LUO, Binhui WANG. Analysis of a novel dual heat source compression-ejection hybrid heat pump system[J]. CIESC Journal, 2025, 76(S1): 36-42.

图/表 6

图1 B-EHPC循环系统图

Fig.1 Schematic diagram of B-EHPC

图2 FB-EHPC循环系统图

Fig.2 Schematic diagram of FB-EHPC

图3 中间压力对循环性能的影响

Fig.3 Variation of cycle performance with pm

图4 蒸发温度对循环性能的影响

Fig.4 Variation of cycle performance with Te

图5 发生温度对循环性能的影响

Fig.5 Variation of cycle performance with Tg

图6 冷凝温度对循环性能的影响

Fig.6 Variation of cycle performance with Tc

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双源压缩-喷射复合热泵系统构建及特性分析

Analysis of a novel dual heat source compression-ejection hybrid heat pump system

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