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Continuous/Intermittent Combustion of Liquid Fuel in Porous Body and Innovative Application to Heat Engines

液体燃料在多孔体中的连续/间歇燃烧及其在热力发动机中的创新应用

基本信息

批准号：
06508002
负责人：
ECHIGO Ryozo
金额：
$ 19.58万
依托单位：
Tokyo Institute of Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A)
财政年份：
1994
资助国家：
日本
起止时间：
1994 至 1996
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-06508002/
关键词：
porous body condensation-evaporation processes diffusion combustion flammable limit reciprocating flow

项目摘要

The recent progresses on combustion researches in porous media have brought about effective utilization of energy as well as remarkable reduction of exhaust pollutants. However, these studies have all been more or less limited to the homogeneous premixture combustion of gaseous fuel. In this study liquid droplets combustion is developed to investigate detaild combustion processes such as heat transfer mechanism, evaporation, diffusion and subsequent combustion.In first year experimental and theoretical researches have been executed to extend a flammable limit of extraordinary lean mixture and to mitigate the energy input for self-sustain combustion in the porous system of reciprocating flow regime.In second fiscal year standardized basic experimental work has been conducted in O-ita University on the diffusion combustion prior to the other related researches through the world. In consequence, some important prominent features have been elucidated the effects of porous body on the extremely low NO_x emission and also on the combustion enhancement for low quality combustible materials.In last fiscal year a new concept has been proposed to realize the constant temperature expansion combustion in reciprocating engines and/or gas turbines which results in higher energy conversion ratio to mechanical power and extended discussions on the thermodynamic cycle.

近年来，多孔介质内的燃烧研究取得了很大进展，在有效利用能源的同时，排放污染物也得到了显著的降低。然而，这些研究都或多或少地局限于气态燃料的均质预混燃烧。在这项研究中，液滴燃烧被用来研究详细的燃烧过程，如换热机理、蒸发、扩散和后续燃烧。第一年，为了扩大极稀薄混合气的可燃极限，减少往复流动多孔系统中自持燃烧的能量输入，进行了实验和理论研究。第二财年，奥伊塔大学在扩散燃烧方面进行了标准化的基础实验工作，领先于世界各地的其他相关研究。在上个财政年度，提出了在往复式发动机和/或燃气轮机中实现恒温膨胀燃烧的新概念，从而提高了能量与机械能的转换比，并扩大了对热力学循环的讨论。