SBIR Phase I: Fine Particles as a Means of Extinguishing Fires

SBIR 第一阶段：细颗粒作为灭火手段

• 批准号: 9660274
• 负责人: Richard Lyon
• 金额: $ 7.5万
• 依托单位: Energy & Environment Research Corporation
• 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: 1997-01-01 至 1997-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9660274&HistoricalAwards=false
• 关键词: SBIR; Phase; Fine; Particles; Means

*** 96-60274 Lyon This Small Business Innovative Research (SBIR) Phase I project will explore the fire extinguishing properties of particles smaller than 100 microns. Larger particles that are commonly used in dry powder extinguishers absorb relatively little heat as they pass through a flame, and they extinguish fires chiefly by absorbing heat from the surroundings. Small particles, however, can come to flame temperature and thus remove heat directly from the flame by vaporizing and/or by acting as radiators. They can inhibit flame propagation by providing surface area for free radical recombination. Small particles of calcium bromide may be particularly effective since they will oxidize to calcium oxide and bromine. Calcium oxide will cool the flame by acting as a radiator, and the bromine will inhibit free radical reactions via the same mechanism which makes halons effective fire extinguishing agents. Phase I will address the problem of imparting sufficient momentum to carry small particles to the flame and demonstrate a solution to this problem. With the banning of halons, polar operations and many other activities face severe fire protection problems. Commercial applications are anticipated in these and many other fire suppression situations. ***

* 96-60274里昂 这个小企业创新研究（SBIR）第一阶段项目将探索火 小于100微米颗粒的灭火性能。 更大的颗粒 通常用于干粉灭火器，当它们通过时吸收相对较少的热量 火，主要是通过吸收火焰中的热量来灭火。 四周 然而，小颗粒可以达到火焰温度， 通过蒸发和/或作为散热器直接从火焰中除去热量。 他们 可以通过提供自由基复合的表面积来抑制火焰传播。 溴化钙的小颗粒可能特别有效，因为它们会氧化成 氧化钙和溴。 氧化钙可以起到散热器的作用来冷却火焰， 溴会通过相同的机制抑制自由基反应， 哈龙有效的灭火剂。 第一阶段将解决传授 足够的动量携带小颗粒的火焰，并证明了解决方案， 这个问题 随着哈龙的禁止，极地行动和许多其他活动面临严重火灾 保护问题。 商业应用预计在这些和许多其他 灭火情况。 ***