Experimental and Theoretical Studies on the Structure of Highly Preheated Air Flames

高度预热空气火焰结构的实验与理论研究

• 批准号: 9610095
• 负责人: Ashwani Gupta
• 金额: $ 20.15万
• 依托单位: University of Maryland, College Park
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-07-01 至 2005-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9610095&HistoricalAwards=false
• 关键词: Experimental; Theoretical; Studies; Structure; Highly

Abstract-Gupta The structure of flames is examined under conditions of highly preheated air using methane or propane as the fuel. Specific matters of interest include flame stability limits, flame signature, flame radiation and emission-adsorption spectra, flame temperature, and chemical species within the flame as affected by air preheat temperature, fuel, and flame equivalence ratio. The experimental facility uses a pair of regenerative burners which allow the test section to be maintained at any temperature up to 1800( K; combustion air can be preheated up to 1300( K, giving a much higher air temperature than in conventional furnaces. The test section is optically accessible permitting the use of a number of optical diagnostics. Highly-preheated air combustion offers many potential advantages but has not been deemed practical up to now. It can reduce fuel consumption up to 30%, reduce carbon dioxide emissions, reduce equipment size, and reduce pollutants by 20-30% for a given therm production. The recirculating system used in this study may be a practical way to exploit these benefits.

古普塔简介 在高度预热的空气条件下， 甲烷或丙烷作为燃料。 感兴趣的具体问题包括火焰稳定性极限， 火焰特征、火焰辐射和发射吸收光谱、火焰温度，以及 受空气预热温度、燃料和火焰影响的火焰内的化学物质 当量比 该实验设备使用一对蓄热式燃烧器， 允许试验段保持在1800（K;燃烧空气）以下的任何温度 可以预热到1300（K），使空气温度远高于 传统的熔炉。 测试部分是光学可访问的，允许使用 光学诊断的数量。 高度预热的空气燃烧提供了许多潜在的优点，但没有 到目前为止被认为是可行的。 它可以减少燃料消耗高达30%，减少 二氧化碳排放量，减少设备尺寸，并减少20-30%的污染物， 给定热生产。 本研究所用的循环系统可能是一种实用的 如何利用这些好处。