采用三维微肋螺旋管进行了制冷剂R134a在管内的流动沸腾传热与流型可视化实验.随着流量和干度的变化,流型可划分为泡状流、塞状流、分层波状流、间歇流以及环状流.在Taitel-Dukler流型图上给出了流型的分区及其转变滗曲线,讨论了螺旋管内两相流动流型转变的特性.传热实验揭示了质量流量、热流密度及蒸汽干度对传热性能的影响,三维微肋螺旋管的强化因子为1.5～2.1.
参考文献
| [1] | 崔文智,廖全,辛明道.R134a在螺旋管内的流动沸腾传热[J].重庆大学学报(自然科学版),2001(04):118-121. |
| [2] | N. Kattan;J. R. Thome;D. Favrat .Flow boiling in horizontal tubes: part 1 -- development of a diabatic two-phase flow pattern map[J].Journal of heat transfer: Transactions of the ASME,1998(1):140-147. |
| [3] | Kim J H;Simon T W;Viskanta R .Journal of Heat Transfer Policy on Reporting Uncertainties in Experimental Measurements and Results (Editorial)[J].Journal of Heat Transfer,1993,115(01):5-6. |
| [4] | 朱明善;韩礼钟;李立.绿色环保制冷剂HFC-134a热物理性质[M].北京:科学出版社,1995 |
| [5] | Taitel Y;Dukler A E .A Model for Predicting Flow Transitions in Horizontal and Near Horizontal Gas-liquid Flow[J].AICHE Journal,1976,22(01):47-55. |
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%