| R410A和R22在水平内螺纹管内冷凝性能的实验研究 |
| |
| 引用本文： | 魏义平,陶乐仁,密洁霞,程建,郑志皋,赵庆霞,高晓凯. R410A和R22在水平内螺纹管内冷凝性能的实验研究[J]. 低温与超导, 2012, 40(12): 46-49. DOI: 10.3969/j.issn.1001-7100.2012.12.012 |
| |
| 作者姓名： | 魏义平 陶乐仁 密洁霞 程建 郑志皋 赵庆霞 高晓凯 |
| |
| 作者单位： | 1.上海理工大学能源与动力工程学院,上海,200093;2.上海理工大学能源与动力工程学院,上海,200093;3.上海理工大学能源与动力工程学院,上海,200093;4.上海理工大学能源与动力工程学院,上海,200093;5.上海理工大学能源与动力工程学院,上海,200093;6.上海理工大学能源与动力工程学院,上海,200093;7.上海理工大学能源与动力工程学院,上海,200093 |
| |
| 基金项目： | 国家高科技研究发展计划项目(2008AA05Z204) |
| |
| 摘 要： | 实验研究了环保替代制冷工质R410A和R22在冷凝温度40C时在内螺纹强化管(外径为9.52mm)内的冷凝换热特性,对二者的冷凝换热性能进行了对比,并研究了测试管外冷却水流量对换热系数的影响.结果表明:在管外冷却水流量相同时,R22的总换热系数K普遍比R410a小,而管内传热系数h,比R410A大.R22与R410A的总传热系数K均随管外冷却水流量的增加而增加,当制冷剂流量Gm大于300kg.s-1.m-2时,管外冷却水流量对总传热系数K的影响变小.
|
| 关 键 词： | R410A 冷凝换热 内螺纹强化管 传热系数 冷却水流量 |
Experimental study on condensation heat transfer of horizontal internally ribbed tube with R22 and R410A |
| |
| Wei Yiping,Tao Leren,Mi Jiexia,Cheng Jian,Zheng Zhigao,Zhao Qingxia,Gao Xiaokai. Experimental study on condensation heat transfer of horizontal internally ribbed tube with R22 and R410A[J]. Cryogenics and Superconductivity, 2012, 40(12): 46-49. DOI: 10.3969/j.issn.1001-7100.2012.12.012 |
| |
| Authors: | Wei Yiping Tao Leren Mi Jiexia Cheng Jian Zheng Zhigao Zhao Qingxia Gao Xiaokai |
| |
| Affiliation: | (Energy and Power Engineering College of University of Shanghai for Science and Technology,Shanghai 200093,China) |
| |
| Abstract: | The experiment studied condensing heat transfer characteristics of the environmental protection alternative refrigeration R410A and R22 working in inner-grooved copper tube(outer diameter is 9.52 mm) under the condensate temperature 40℃,compared condensing heat transfer characteristics of them,and studied the influence of the cooling water flow to the test tube's heat exchange coefficient.The results show that when the cooling water flow is same,the total heat transfer coefficient K of refrigerant R22 is smaller than R410A universally,but tube heat transfer coefficient hr is bigger than R410A.The total heat transfer coefficient K of R22 and R410A increases with the increase of cooling water flow outside of the tube,when the refrigerant flow Gm is higher than 300kg.s-1.m-2,the affect to the total heat transfer coefficient K of the cooling water flow becomes smaller. |
| |
| Keywords: | R410A Condensation heat transfer Internally ribbed copper tubes Heat transfer coefficient Cooling water flow |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
