制冷学报2024，Vol.45Issue(5)：98-104,7.DOI:10.12465/j.issn.0253-4339.2024.05.098
准二级高温热泵循环的性能分析及实验研究
Performance Analysis and Experimental Study of Quasi-two-stage Heat Pump Cycle
孙文倩 1黄国华 2谷再丰 1杜伟伟 1唐明生 3吴伟4
作者信息
- 1. 同方智慧能源有限责任公司 北京 100083
- 2. 同方智慧能源有限责任公司 北京 100083||清华大学建筑节能研究中心 北京 100084
- 3. 中国科学院理化技术研究所 北京 100190||中国科学院空间功热转换技术重点实验室 北京 100190
- 4. 香港城市大学能源及环境学院 中国香港 999077
- 折叠
摘要
Abstract
To solve the contradiction between the surplus of low-temperature waste heat resources and the shortage of high-temperature heat demand,this study designed a set of high-temperature heat pump unit based on quasi-two-stage compression.The cycle was analyzed theoretically,and the design was optimized.A combination of a flash tank and an internal heat exchanger was used to improve the performance of the unit,and a performance test of the unit was carried out.The performance of the unit was analyzed under conditions in which the outlet water temperature of the condenser was 85℃-120℃and the inlet water temperatures of the evaporator were 50℃,60℃,and 70℃.Heating capacity,coefficient of performance(COP),exergetic efficiency,condensing pressure,and discharge temperature were taken as the performance indicators.The performance of the experimental unit was consistent with the theoretically calculated performance.The inlet water temperature of the evaporator was 49.8℃,and the outlet water temperature of the condenser was 118.1℃.The maximum heat produced by the unit,COP,and exergy efficiency were 916.3 kW,2.51,and 46.3%,respectively.Meanwhile,the condensing pressure of the unit was 1.8 MPa,and the discharge temperature was 137℃;these values meet the safety requirements of the unit.关键词
高温热泵/闪蒸器/回热器/制热性能/㶲分析Key words
high-temperature heat pump/flash tank/internal heat exchanger/heating performance/exergy analysis分类
通用工业技术引用本文复制引用
孙文倩,黄国华,谷再丰,杜伟伟,唐明生,吴伟..准二级高温热泵循环的性能分析及实验研究[J].制冷学报,2024,45(5):98-104,7.
