本文以回热式气体压缩制冷系统为研究对象,结合(火积)耗散分析与热力学分析,建立了回路中各点温度与设计参数的数学关系,明确了各设计参数间的约束关系,从而将系统设计优化问题转化为条件极值问题并求得理论解,实现了系统内多参数的全局优化.通过对以换热器总热导最小为优化目标的算例进行计算分析,发现当制冷需求、功耗及压比给定时,增大压比或预冷工质热容量流有利于回热式制冷系统总热导的减小,而增大净功耗则使总热导先减小后增加,在净功耗临界值处总热导极小.
参考文献
| [1] | Bahri Sahin;Ali Kodal .Thermoeconomic optimization of a two stage combined refrigeration system: a finite-time approach[J].International Journal of Refrigeration,2002(7):872-877. |
| [2] | Aitali MA. .THE MAXIMUM COEFFICIENT OF PERFORMANCE OF INTERNALLY IRREVERSIBLE REFRIGERATORS AND HEAT PUMPS[J].Journal of Physics, D. Applied Physics: A Europhysics Journal,1996(4):975-980. |
| [3] | Zeng-Yuan Guo;Hong-Ye Zhu;Xin-Gang Liang .Entransy—A physical quantity describing heat transfer ability[J].International Journal of Heat and Mass Transfer,2007(13/14):2545-2556. |
| [4] | Qun Chen;Xin-Gang Liang;Zeng-Yuan Guo.Entransy theory for the optimization of heat transfer - A review and update[J].International Journal of Heat and Mass Transfer,2013:65-81. |
| [5] | Z. Y. Guo;X. B. Liu;W. Q. Tao;R. K. Shah .Effectiveness-thermal resistance method for heat exchanger design and analysis[J].International Journal of Heat and Mass Transfer,2010(13/14):2877-2884. |
| [6] | Qun Chen.Entransy dissipation-based thermal resistance method for heat exchanger performance design and optimization[J].International Journal of Heat and Mass Transfer,2013:156-162. |
| [7] | Qun Chen;Yun-Chao Xu;Jun-Hong Hao .An optimization method for gas refrigeration cycle based on the combination of both thermodynamics and entransy theory[J].Applied energy,2014(Jan.):982-989. |
| [8] | Jun-Hong Hao;Qun Chen;Yun-Chao Xu .A global optimization method for regenerative air refrigeration systems[J].Applied thermal engineering: Design, processes, equipment, economics,2014(1/2):255-261. |
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%