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.

抽象 - 古普塔在使用甲烷或丙烷作为燃料的高度预热空气的条件下检查火焰的结构。 感兴趣的特定问题包括火焰稳定性限制，火焰签名，火焰辐射和发射吸附光谱，火焰温度以及在受空气预热温度，燃料和火焰等效比的影响的火焰中。 实验设施使用一对再生燃烧器，可以将测试部分维持在任何温度高达1800的温度（K;燃烧空气中可以预热至1300（K，提供比常规炉中的气温更高。在常规炉中都更高的气温。在传统上，测试部分是可以在光学上可访问的，允许使用多种速度的燃料量，但可以使用多种效率。对于给定的THORM生产，消费高达30％，减少二氧化碳排放，减少设备尺寸，并将污染物减少20-30％。