• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International journal of air-conditioning and refrigeration >Steam Condensation Enhancement by Applying Self-Assembled Monolayer (Chlorosilane) on Titanium Corrugated Tubes
【24h】

Steam Condensation Enhancement by Applying Self-Assembled Monolayer (Chlorosilane) on Titanium Corrugated Tubes

机译：通过在钛波纹管上应用自组装单层（氯硅烷）来增强蒸汽冷凝

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

It is well known that dropwise condensation enhances the condensation heat transfer coefficient significantly compared with film condensation. In the present study, dropwise condensation heat transfer characteristics on titanium corrugated tubes were investigated. Two corrugated tubes with different corrugation pitch and depth were tested at the steam pressures of 5 and 10 kPa. To promote dropwise condensation, silane-based SAM was coated. For bare corrugated tubes, significant enhancement of condensation heat transfer was noted, especially for the 2.1/0.2 (corrugation pitch/corrugation depth in mm) tube. For SAM-coated tubes, the heat transfer enhancement was significant (2.61 at 5kPa and 2.45 at 10kPa) for the smooth tube. For the corrugated tubes, however, the enhancement decreased to 1.78 and 2.22 for 8.7/0.4 tube and to 1.26 and 1.52 for 2.1/0.2 tube. The present results suggest that corrugations may not be as an effective heat transfer method for dropwise condensation as it is for film condensation. This result was supported by the photos taken by mist spray, which suggested that surface tension drained condensation by corrugations is not a major heat transfer mechanism for dropwise condensation on corrugated tubes.
机译：众所周知，与膜冷凝相比，逐滴冷凝显着提高了冷凝传热系数。在本研究中，研究了钛波纹管上的逐滴冷凝传热特性。在5 kPa和10 kPa的蒸汽压力下测试了两个波纹节距和深度不同的波纹管。为了促进逐滴缩合，涂覆了基于硅烷的SAM。对于裸露的波纹管，凝结传热得到了显着增强，尤其是对于2.1 / 0.2（波纹节距/波纹深度，单位：mm）的管子。对于涂有SAM的管，光滑管的传热增强显着（在5kPa时为2.61，在10kPa时为2.45）。但是，对于波纹管，增强率降低到8.7 / 0.4管为1.78和2.22，而降低为2.1 / 0.2管为1.26和1.52。目前的结果表明，波纹可能不是像膜凝结那样有效的用于逐滴凝结的传热方法。雾状喷雾所拍摄的照片支持了这一结果，这表明波纹消除了表面张力，这不是波纹管上逐滴冷凝的主要传热机制。

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