U.S.-UK Cooperative Research: Corrosion, Oxygen Mass Transfer and Heat Transfer

该奖项将支持Euan Somerscales博士、Rensselaer理工学院和dr。A.D. Mercer， P.E. Francis和A. Turnbull，国家物理实验室（NPL），特丁顿，米德尔塞克斯，英国。该项目的目的是研究氧气在腐蚀传热表面的传输，使用国家物理实验室的一种独特的实验设备。流动的水对传热表面的腐蚀会导致材料从表面流失并最终穿孔。此外，腐蚀产物的积累引入了热阻，阻碍了热量的传递。这是一个具有重要技术意义的课题，因为几乎普遍使用各种水质的水作为加热或冷却的介质。尽管如此，从基本的观点来看，传热表面的腐蚀还没有得到很好的理解。因此，无法获得能够使传热设备的设计者和使用者有把握地预测腐蚀对其寿命的影响的定量信息。提出的调查将提供在紊流传热条件下氧向腐蚀表面的质量传输速率的数据。本研究的结果将对预测传热设备的工作寿命和性能的方法的发展做出重大贡献，例如内燃机的冷却通道，蒸汽发电厂的冷凝器和太阳能集热器的接收器。该项目将受益于美国和英国研究人员在传热表面腐蚀污垢领域的互补专业知识，以及国家物理实验室独特的实验设备的可用性，以开展拟议的研究。

This award will support collaborative research between Dr. Euan Somerscales, Rensselaer Polytechnic Institute and Drs. A.D. Mercer, P.E. Francis and A. Turnbull, National Physical Laboratory (NPL), Teddington, Middlesex, England. The objective of the project is the study of the transport of oxygen to a corroding heat transfer surface, using a unique piece of experimental equipment at the NPL. The corrosion of heat transfer surfaces by flowing water can result in loss of material from the surface and eventual perforation. In addition, the accumulation of corrosion products introduces a thermal resistance which impedes the transfer of heat. This is a topic of technical importance because of the almost universal use of water of various qualities, as a medium of heating or cooling. In spite of this, the corrosion of heat transfer surfaces is not well understood from the fundamental point of view. Consequently, quantitative information of the type that would permit the designer and user of heat transfer equipment to predict with confidence the effects of corrosion on its life is not available. The proposed investigation will provide data on the mass transport rate of oxygen to a corroding surface under heat transfer conditions in turbulent flow. The results of this research will make a significant contribution to the development of methods to predict the operating life and performance of heat transfer equipment, such as cooling passages of internal combustion engines, steam power plant condensers, and receivers of solar collectors. The project will benefit from the complementary expertise of the U.S. and British investigators in the area of corrosion fouling of heat transfer surfaces, and from the availability of unique experimental equipment at NPL to carry out the proposed studies.