| 摘要: |
| 结合我国现行制冷剂标准，按照环境相容性、安全性、热工循环性能原则进行了高温复叠式热泵循环的制冷剂筛选，对不同制冷剂组合进行了计算和分析。结果表明，高低温侧制冷剂可采用R245fa/R134a、R245fa/R420A、R245fa/R413A、R245ca/R420A等组合。若进一步考虑制冷剂获得的容易程度、经济性等因素时，可选择R245fa/R134a组合。 |
| 关键词: 工程热物理 复叠 制冷剂 热泵 |
| DOI： |
| 投稿时间：2011-09-27
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| 基金项目: |
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| Refrigerant Selection for Cascade Water-to-water Heat Pump |
|
Zhao Haibo1,2, Yang Zhao1
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| (1.School of Mechanical, Tianjin University;2.Department of Refrigeration, Yantai University) |
| Abstract: |
| Based on China National Standard-Number Designation and Safety Classification of Refrigerants, refrigerant for the cascade water-to-water heat pump were selected according to principles of environmental-friendly, safety and thermodynamic cycle performances. Different refrigerant combinations for high- and low-temperature cycles in the cascade heat pump were calculated and compared. Results show that combinations of R245fa/R134a, R245fa/R420A, R245fa/R413A, R245ca/R420A are better for the cascade heat pump. It also shows that, considering easy access and economy of refrigerants, R245fa/R134a combination will be a better choice. |
| Key words: engineering thermophysics cascade heat pump refrigerant heat pump |
