Development of Liquid Fuel Combustion by Relaxation of Phase Change in Liquid-Vapor

通过缓和液-汽相变发展液体燃料燃烧

• 批准号: 13650810
• 负责人: KOBAYASHI Noriyuki
• 金额: $ 2.18万
• 依托单位: Nagoya University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-13650810/
• 关键词: Hot Water Supplier; Conservation of Electric Energy; Radiation Heat; Reflux; Turn Down Ratio; Relaxation of Phase Change in Liquid-Vapor; 灯油給湯器

In oil vaporizing boiler as an energy device for home use, the vaporizing combustor has a demerit that much consumption of electric energy is required for pre-heating of fuel vaporizer in order to prepare the hot water supply instantaneously. It is required for improvement of the cost advantage that the consumption of the electric energy is reduced on fuel vaporizer. In the previous work, it was reported that a kerosene vaporizing heating could be mitigated during the stable combustion state because the kerosene vaporization was sustained to enhance the heat reflux of radiation of the flame and high temperature furnace with higher porous ceramic plate burner. On the other hand, the problem in large consumption of the electric energy has not been solved yet at the ignition and start up state. To meet the techniques of requirement above, we proposed the kerosene ignition device with ultrasonic atomizing burner. But fundamental combustion characteristics of ultrasonic atomizing burner had … More been little researched.To develop the new liquid fuel combustion process, which is a quick phase change in liquid fuel atomized with high frequency ultrasonic oscillator, through an instantaneous mixing with air. In this work, we manufactured ultrasonic atomizing premixed burner and the ignition characteristics was investigated. As other characteristics of this ultrasonic combustor, the stable combustion range and NOx emission were examined with considering the combustion air supply. We have clarified research results as shown below.1) Kerosene droplets had several micron diameter and sharp size distribution caused by ultrasonic atomizing method. Accordingly, ultrasonic atomizing method is effective for instantaneous ignition of kerosene.2) The stable combustion region of ultrasonic atomizing burner was decision by the balance between primary and secondary air flow rate.3) Compared with conventional models, NOx emission could be extremely reduced because of diffusion of the high temperature zone in the flame with appropriate air supply Less

在蒸发中，Boiller作为房屋的能量，以便在稳定的燃烧状态下，可以减少燃油供应的燃料蒸发剂。煤油的持久增强了辐射的热量，另一方面，陶瓷板燃烧器的高温。在上面的需求中，我们用超声波燃料燃烧器支撑了煤油点火装置这项工作，我们制造了超声燃烧器，并作为该超声波燃烧器的其他特征，稳定的燃烧范围和NIX使用了燃烧空气供应。弯曲和尖锐的尺寸是，超声原子化方法对煤油的瞬时点火有效。2）超声雾化ner的稳定燃烧区是由初级空气流量和二级空气流量之间的平衡决定的。火焰中温度区域的sion，适当的空气供应更少

项目成果

Fuse T., N.Kobayashi, M.Hasatani, Y.Tanaka: "Combustion Characteristics of Premixed Oil Burner using Ultrasonic Atomization"Proceeding of 9th Asian Pacific Confederation of Chemical Engineering Congress. (CD-ROM). 327 (2002)

Fuse T.、N.Kobayashi、M.Hasatani、Y.Tanaka：“使用超声波雾化的预混油燃烧器的燃烧特性”第九届亚太化学工程联合会大会论文集。

Fuse T., N.Kobayashi, M.Hasatani: "Performance of Flammability and NOx Emission in Premixed Oil Burner Using Ultrasonic Atomization"Journal of Chemical Engineering of Japan. (印刷中).

Fuse T.、N.Kobayashi、M.Hasatani：“使用超声波雾化的预混油燃烧器的可燃性和氮氧化物排放性能”日本化学工程杂志（正在出版）。