• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>International Conference on Boiling Heat Transfer(ICBHT 2003); 20030504-08; Montego Bay(JM) >THE STEAM BOAT CONDENSER COOLING OR ... AN EXTRA MODE OF ENHANCED CONVECTIVE HEAT TRANSFER BY OSCILLATING (SWARM- OR MINI-) BUBBLES IN SUBCOOLED BOILING
【24h】

THE STEAM BOAT CONDENSER COOLING OR ... AN EXTRA MODE OF ENHANCED CONVECTIVE HEAT TRANSFER BY OSCILLATING (SWARM- OR MINI-) BUBBLES IN SUBCOOLED BOILING

机译：蒸汽船冷凝器冷却或...通过在过冷沸腾中振荡（蠕动或小型）气泡增强对流传热的额外模式

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

In a first paper on the boat process experimental results and a simplifying thermodynamic model have been presented (Schroder 2001). The thermodynamic availability of that arrangement and the poor capability of those bubble-engines to do mechanical work (and to compensate for hydrodynamic dissipation) have been demonstrated. But, each cycle does not only result in a net effect of momentum transport (driving force), it results in a net effect of enthalpy transport (heat flux) as well. It is not very surprising that from a mechanical point of view this has not especially been mentioned up to now and therefore was far from being quantitatively evolved. Experiments have been done using a glass model supplied with controlled electrical heating, high-speed video and temperature measurement. The results of the heat transfer performance are as surprising as the effect of making gold from sand concerning the equivalent axial heat conductivity of the glass tubes. Initiated by these results the first model is supplemented with an extra model to analyse this new regenerating (oscillating and conducting) heat transfer mode. This combines the properties of a heat storing tube-wall and an oscillating water column in a field of temperatures between the saturation temperature of the steam and the temperature of the subcooled bulk water. Model calculations compare favourably with experimental results. This is the base to discuss that process along with its physical parameters as a basic concept for a pulsating heat pipe or a secondary subcooled boiling mode.
机译：在第一篇有关船工艺的论文中，提出了实验结果和简化的热力学模型（Schroder 2001）。已经证明了这种布置的热力学可用性以及那些气泡引擎进行机械功（以及补偿流体动力耗散）的能力差。但是，每个循环不仅导致动量传递（驱动力）的净效应，而且还导致焓传递（热通量）的净效应。从机械的角度来看，到目前为止还没有特别提到这一点，这并不是很令人惊讶，因此还远远没有得到定量的发展。实验是使用玻璃模型完成的，该玻璃模型具有受控的电加热，高速视频和温度测量功能。就玻璃管的等效轴向导热率而言，传热性能的结果令人惊讶，就像用沙子制造金的效果一样。从这些结果开始，第一个模型将补充一个额外的模型，以分析这种新的再生（振荡和传导）传热模式。这在蒸汽的饱和温度与过冷的散装水的温度之间的温度场中结合了储热管壁和振荡水柱的特性。模型计算与实验结果相比具有优势。这是讨论该过程及其物理参数的基础，它是脉动热管或二次过冷沸腾模式的基本概念。

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