• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International Journal of Heat and Mass Transfer >Heat transfer and pressure drop during flow boiling of pure refrigerants and refrigerant/oil mixtures in tube with porous coating
【24h】

Heat transfer and pressure drop during flow boiling of pure refrigerants and refrigerant/oil mixtures in tube with porous coating

机译：纯制冷剂和带有多孔涂层的管中的制冷剂/油混合物流沸腾时的传热和压降

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The experimental stand and procedure for flow boiling investigations are described. Experimental data for pure R22, R134a, R407C and their mixtures with polyester oil FUCHS Reniso/Triton SEZ 32 in a tube with porous coating and smooth, stainless steel reference tube are presented. Mass fraction of oil was equal to 1% or 5%. During the tests inlet vapour quality was set at 0 and outlet quality at 0.7. Mass velocity varied from about 250 to 500 kg/m~2s. The experiments have been conducted for average saturation temperature 0 ℃. In the case of flow boiling of pure refrigerants, the application of a porous coating on inner surface of a tube results in higher average heat transfer coefficient and simultaneously in lower pressure drop in comparison with the flow boiling in a smooth tube for the same mass velocity. Correlation equation for heat transfer coefficient calculation during the flow boiling of pure refrigerants inside a tube with porous coating has been proposed.
机译：描述了用于流动沸腾研究的实验台和程序。给出了纯R22，R134a，R407C及其与聚酯油FUCHS Reniso / Triton SEZ 32的混合物在带有多孔涂层的管和光滑的不锈钢参考管中的实验数据。油的质量分数等于1％或5％。在测试过程中，入口蒸汽质量设为0，出口质量设为0.7。质量速度在约250至500 kg / m〜2s之间变化。实验已针对平均饱和温度0℃进行。在纯制冷剂流沸腾的情况下，与在相同质量速度下在光滑管中流沸腾相比，在管子内表面上施加多孔涂层会导致更高的平均传热系数，同时导致更低的压降。 。提出了具有多孔涂层的管内纯制冷剂流动沸腾过程中传热系数计算的相关方程。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号