Research Initiation: Experimental Studies of Film and Transition Boiling Heat Transfer

研究启动：薄膜与过渡沸腾传热实验研究

• 批准号: 8808988
• 负责人: Jose Orozco
• 金额: $ 7.99万
• 依托单位: University of Illinois at Chicago
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-09-01 至 1991-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8808988&HistoricalAwards=false
• 关键词: Research; Initiation; Experimental; Studies; Film

This research considers natural and forced convection boiling heat transfer from cylindrical and spherical bodies in both transition and film boiling. The objective is to investigate the influence of surface roughness, fluid subcooling, liquid velocity, and fluid chemistry on the stability of the thin vapor films. The experimental approach seeks the conditions for instability and the parameters that contribute to the transition region of the boiling curve. Effective and efficient heat transfer is important in a wide variety of energy systems, and convective boiling is often used in such systems. The transition and film boiling regions of the boiling curve are generally viewed as regions where equipment should not operate due to the instability of the flow in these boiling regions. The design and stable operation of these systems will benefit from the better understanding of the basic mechanisms involved.

本研究考虑了自然对流和强制对流沸腾热 从圆柱体和球体的过渡和 薄膜沸腾 目的是调查 表面粗糙度、流体过冷度、液体速度和流体 化学对薄蒸汽膜的稳定性的影响。 实验 方法寻求不稳定的条件和参数， 有助于沸腾曲线的过渡区。 有效且高效的热传递在多种应用中是重要的。 在能源系统中，对流沸腾经常用于这种 系统. 沸腾曲线的过渡区和膜沸腾区 通常被视为设备不应运行的区域， 这些沸腾区域的流动不稳定性。 设计 这些系统的稳定运行将受益于更好的 了解所涉及的基本机制。