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热泵热水器中自然替代工质R1270和R290的充注量优选及性能研究
Research to Optimize the Refrigerant Charge of the Natural Refrigerants R1270 and R290 in Heat-Pump Water Heaters and Their Performance
- 制冷学报 2025年46卷第5期 页码：69-76
- 作者机构：
中原工学院智慧能源与环境学院 郑州 450007
- 作者简介：
巨福军，男，博士，讲师，中原工学院智慧能源与环境学院，0371-62506808，E-mail：jufujun2008@163.com。研究方向：热泵节能与智能化；可再生能源高效利用与储能技术。
- 基金信息：
DOI：10.12465/j.issn.0253-4339.2025.05.069
中图分类号： TB64;TM925.32;TU822.2收稿日期：2024-03-29，
修回日期：2024-08-05，
录用日期：2024-08-06，
纸质出版日期：2025-10-16
- 稿件说明：
移动端阅览
巨福军, 侯力豪, 刘清磊, 等. 热泵热水器中自然替代工质R1270和R290的充注量优选及性能研究[J]. 制冷学报, 2025,46(5):69-76.
Ju Fujun, Hou Lihao, Liu Qinglei, et al. Research to Optimize the Refrigerant Charge of the Natural Refrigerants R1270 and R290 in Heat-Pump Water Heaters and Their Performance[J]. Journal of refrigeration, 2025, 46(5): 69-76.
巨福军, 侯力豪, 刘清磊, 等. 热泵热水器中自然替代工质R1270和R290的充注量优选及性能研究[J]. 制冷学报, 2025,46(5):69-76. DOI： 10.12465/j.issn.0253-4339.2025.05.069.
Ju Fujun, Hou Lihao, Liu Qinglei, et al. Research to Optimize the Refrigerant Charge of the Natural Refrigerants R1270 and R290 in Heat-Pump Water Heaters and Their Performance[J]. Journal of refrigeration, 2025, 46(5): 69-76. DOI： 10.12465/j.issn.0253-4339.2025.05.069.
摘要
R1270和R290均是氟利昂等传统工质的潜在替代工质。实验研究了名义工况下工质充注量对分别使用R1270和R290的热泵热水器系统性能和冷凝器中换热流体温度分布的影响以及自然工质替代R22的可行性。结果表明：充注量对两系统的循环性能和换热流体的温度分布均有显著影响；R1270系统和R290系统均在相同的最佳充注量（0.90 kg）下分别获得最大COP为4.443和4.317；不同充注量下两系统的冷凝器中均出现2个传热窄点和2个最大传热温差，且其第一传热窄点和第二最大传热温差的出现位置均随充注量的变化而出现相似的迁移；相比于R22系统，R1270系统和R290系统在最佳充注量下均获得明显占优的COP和排气温度以及基本相当的排气压力，且其制热量分别提升了7.05%和降低了10.65%，因此R1270比R290在热泵热水器中替代R22时优势更显著。
Abstract
R1270 and R290 are alternative refrigerants with great potential. In this study
the influence of the refrigerant charge on the performance of the heat-pump water heater with R1270 and R290
the temperature distribution of the heat transfer fluids in the condenser
and the feasibility of replacing R22 with natural refrigerants were investigated. The results indicate that the refrigerant charge has a considerable influence on the cycle performance and the temperature distribution of the heat-transfer fluids in both systems. At the same optimal charge (0.90 kg)
the R1270 and R290 systems achieved a maximum coefficient of performance (COP) of 4.443 and 4.317
respectively. At different refrigerant charges
two heat transfer pinch points and two maximum heat transfer temperature differences occurred in the condensers of both systems
and the locations of the first pinch point and the second maximum temperature difference point showed similar migrations with changes in refrigerant charge. Compared with the R22 system
both the R1270 and R290 systems
at optimal charge
achieved significantly better COP and discharge temperatures
exhibited relatively equivalent discharge pressures
and their heating capacities increased by 7.05% and decreased by 10.65%
respectively. Hence
R1270 can be preferred over R290 for replacing R22 in a heat-pump water heater.
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references
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