Investigation on the Burning Behavior of Alkane / Alcohol / Diesel Multicomponent Fuel Droplets
Date Issued
2016
Date
2016
Author(s)
Wang, Ting-Dhieh
Abstract
This experiment applies Ink-Jet Printing method by using droplet generator to generate free falling droplets into a high temperature glass tube. In this experiment, we focus on analyzing the flame colors, flame shrinkage, ignition delay, burning time, burning rate, and micro-explosion. This experiment is separated into three parts. The first part is about the combustion behaviour of the single fuel droplets. The fuels include: alcohols e.g. methanol, ethanol, propanol, 1-butanol, octanol, dodecanol, alkanes e.g. hexane, heptane, decane, dodecane, dodecane, and diesel. We measure the ignition delay, burning time of each fuels. And summarize the ignition delay, burning time influenced by different chemical and physical properties. The second part is about the combustion behaviour of the mixture fuel droplets. We mix high carbon number fuel and low carbon number fuel. In order to observe the combustion behaviour of the mixture fuel influenced by different carbon number. The third part is about the combustion behaviour of diesel adding acetone-butanol-ethanol(ABE) and water-containing acetone-butanol-ethanol(WABE). According to the experiment results, the burning time of alcohol is related carbon number and the ignition delay is related latent heat of evaporation. The timing of flame shrinkage occurring depends upon the variety of boiling point. When the proportion of high carbon number is increased in the composition, the flame shrinkage will occur early. We observe the micro-explosion of diesel whether mixing anything fuels or not. And diesel adding WABE can make the burning time decreased because of the micro-explosion.
Subjects
Droplets
Micro explosion
Flame shrinkage
Ignition delay
WABE
Type
thesis
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