为提高CO2跨临界制冷循环的效率,本文提出一种带引射器和经济器的CO2跨临界循环系统.通过合理设计专用的涡旋式或螺杆式CO2压缩机及中间补气孔,采用经济器可减少CO2跨临界循环的压缩不可逆损失;采用引射器代替节流阀,部分回收工质从高压到低压过程的膨胀功,可增加制冷量.通过热力学分析,确定带引射器和经济器的CO2跨临界循环系统合理的补气压力,可以得到较高的循环效率.在较低蒸发温度下,该系统可以明显降低压缩机的排气温度,有利于系统稳定运行.
参考文献
| [1] | Huff H J;Radermacher R .CO2 Compressor-Expander Analysis. ARTI-21CR/611-10060-01[R].U.S.A: Maryland University,2003. |
| [2] | Lorenzen G .Revival of Carbon Dioxide as a Refrigerant[J].International Journal of Refrigeration-Revue Internationale du Froid,1994,17(05):292-301. |
| [3] | Heyl P;Quack H.Transcritical CO2-Cycle with Expander-Compressor[A].USA: Purdue University,2000:471-477. |
| [4] | Long Fu;Guoliang Ding;Zujian Su;Guoquan Zhao .Steady-state simulation of screw liquid chillers[J].Applied thermal engineering: Design, processes, equipment, economics,2002(15):1731-1748. |
| [5] | Guo-yuan Ma;Qin-hu Chai .Characteristics of an improved heat-pump cycle for cold regions[J].Applied Energy,2004(3):235-247. |
| [6] | S. M. Liao;T. S. Zhao;A. Jakobsen .A correlation of optimal heat rejection pressures in transcritical carbon dioxide cycles[J].Applied thermal engineering: Design, processes, equipment, economics,2000(9):831-841. |
| [7] | Dorantes R;Lallemand A .Prediction of Performance of a Jet Cooling System Operating with Pure Refrigerants or Non-Azeotropic Mixtures[J].International Journal of Refrigeration-Revue Internationale du Froid,1995,18(01):21-30. |
| [8] | 梁贞潜;黄冬平 .二氧化碳汽车空调器仿真与优化.制冷空调技术新进展[D].上海:上海交通大学,2001. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%