太阳能增效两级压缩热泵系统的能量利㶲分析

兰州理工大学学报 ›› 2023, Vol. 49 ›› Issue (2): 41-48.

太阳能增效两级压缩热泵系统的能量利㶲分析

史佳萌, 李风雷^*

太原理工大学土木工程学院, 山西太原 030024

收稿日期:2021-09-09 出版日期:2023-04-28 发布日期:2023-05-05
通讯作者: 李风雷(1967-),男,山西吕梁人,博士,教授.Email:fengleili@126.com
基金资助:
山西省基础研究计划(202103021224098),国家国际科技合作项目(2013DFA61580),山西省重点研发计划(201803D31036,202102060301014)

Energy and exergy analysis of solar energy enhanced two-stage compression heat pump system

SHI Jia-meng, LI Feng-lei

College of Civil Engineering, Taiyuan University of Technology, Taiyuan 030024, China

Received:2021-09-09 Online:2023-04-28 Published:2023-05-05

摘要/Abstract

摘要： 为了提高热泵系统的性能,提出了太阳能增效两级压缩热泵系统(SETHP).建立了该系统的热力学模型,对不同工况下系统性能进行了分析,并与传统两级压缩热泵系统(TSHP)进行了比较.结果表明:系统制热系数COP_h和㶲效率随中间温度的升高呈先增大后减小的变化趋势;随着冷凝温度的升高,COP_h减小,㶲效率升高;随着蒸发温度的升高和太阳辐照度的增加,COP_h和㶲效率均升高;与TSHP系统相比,SETHP系统性能显著提高.SETHP系统的研究可为太阳能热泵供暖技术在低温环境下的应用提供新思路和新方法.

关键词: 太阳能, 两级压缩, 热泵, 能量分析, 㶲分析

Abstract: In order to improve the performance of the heat pump system, a solar energy enhanced two-stage compression heat pump system (SETHP) is proposed. A thermodynamic model of the system is established. The system performance under different working conditions is analyzed, which compared with the traditional two-stage compression heat pump system (TSHP). The results indicate that the coefficient of heating performance COP_h and exergy efficiency first increase and then decrease with the increase of the intermediate temperature. As the condensation temperature increases, COPh decreases and exergy efficiency increases. As the evaporation temperature increases and solar irradiance increases, COP_h and exergy efficiency both increase. Compared with the TSHP system, the performance of the SETHP system is significantly improved. The research of SETHP system can provide new ideas and methods for the application of solar heat pump heating technology in low temperature environment.

Key words: solar energy, two-stage compression, heat pump, energy analysis, exergy analysis

中图分类号:

TK519

史佳萌, 李风雷. 太阳能增效两级压缩热泵系统的能量利㶲分析[J]. 兰州理工大学学报, 2023, 49(2): 41-48.

SHI Jia-meng, LI Feng-lei. Energy and exergy analysis of solar energy enhanced two-stage compression heat pump system[J]. Journal of Lanzhou University of Technology, 2023, 49(2): 41-48.

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