Burners Producing Large Excess Enthalpies
Burners Producing Large Excess Enthalpies
复制标题
产生大量过量热函的燃烧器
DOI：
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发表时间：
1973
期刊：
影响因子：
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通讯作者：
F. Weinberg
中科院分区：
文献类型：
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作者：
D. Hardesty;F. Weinberg
分析了反应物和产物不直接混合时燃烧系统中热再循环的原理。该概念导致一般的治疗，关联火焰温度与初始混合物的化学计量和燃料热值的限制被删除在燃烧器依赖于焓超过初始和最终状态。这对于热含量非常低的反应物具有重要的影响。否则，不可燃混合物可通过再循环热燃烧，以提高反应区的温度，而不产生高的最终温度。理想化的模型被用来证明潜在的回报，从应用的原则在发电（包括直接能源转换）从低热含量的气体，节省燃料，火焰稳定性（可燃性极限和最大质量吞吐率）和污染物排放的领域。实验结果从一个简单的燃烧器结合逆流热交换器。
The principle of heat recirculation in combustion systems is analyzed for the case where no direct mixing of reactants and products occurs. The concept leads to a general treatment, the restriction of associating flame temperature with the initial mixture stoichiometry and fuel heating value being removed in burners which rely on an enthalpy excess over initial and final states. This has important consequences particularly for reactants of very low heat content. Otherwise nonflammable mixtures may be burned by recirculating heat so as to increase the temperature in the reaction zone without generating a high final temperature. Idealized models are used to demonstrate the potential rewards from application of the principle in the areas of power generation (including direct energy conversion) from gases of low heat content, fuel saving, flame stability (flammability limits and maximum mass throughput rates) and pollutant emission. Experimental results from a simple burner incorporating a counterflow heat ex...