...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Fuel >Emission characteristics of methanol-in-canola oil emulsions in a combustion chamber
【24h】

Emission characteristics of methanol-in-canola oil emulsions in a combustion chamber

机译：芥菜籽油中甲醇在燃烧室内的排放特性

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This paper focuses on the emulsification and combustion characteristics of different methanol-in-canola oil blends subject to different conditions including swirl number and equivalence ratio. Exhaust emissions data such as nitrogen oxides (NO_x), unburned hydrocarbons (UHC's), carbon monoxide (CO) and carbon dioxide (CO_2) emission levels were measured and analyzed thoroughly. Stable methanol-in-canola oil emulsions were made by using a combination of Span 80 and Tween 80 surfactants. The three different fuels studied were; pure canola oil, 89-9 emulsion [9% methanol - in - 89% canola oil emulsion with 2% surfactant (w/w)] and 85-12.5 emulsion [12.5% methanol - in - 85% canola oil emulsion with 2.5% surfactant (w/w)]. All the experiments were conducted in a 30 kW combustion chamber equipped with a twin fluid atomizer and a radial vane swirler. The swirler vanes were positioned at 60° and 51° angles (with respect to vertical axis) in order to achieve swirl numbers (SNs) of 1.40 and 1.0, respectively. The fuels were tested at equivalence ratios (ø) of 0.83, 0.91,1.0, 1.05 and 1.11. Ultimate analysis, higher heating value (HHV), kinematic viscosity and density were used to characterize the fuel properties. Experimental results showed that fuel type and swirl number had a major influence on emission levels. All the emulsions produced lower NO_x, CO and unburned hydrocarbon emissions than pure canola oil at both swirl numbers and all equivalence ratios. The emulsions also produced higher CO_2 emissions than pure canola oil. On comparing the performance of the emulsions, it was seen that the addition of methanol to the blend had a definite positive impact on the combustion characteristics. It was observed that higher percentage of methanol in the emulsions led to lesser NO_x, UHC and CO emissions. The vorticity imparted to the secondary air by the swirler also affected emission levels considerably. Increased vorticity at higher swirl angle led to better mixing of air and fuel, minimizing emission levels specifically at swirl number of 1.4.
机译：本文重点研究了在旋涡数和当量比等不同条件下不同的甲醇/低芥酸菜子油混合物的乳化和燃烧特性。测量并彻底分析了废气排放数据，例如氮氧化物（NO_x），未燃烧的碳氢化合物（UHC），一氧化碳（CO）和二氧化碳（CO_2）的排放水平。通过使用Span 80和Tween 80表面活性剂的组合来制备稳定的低芥酸菜籽油甲醇乳液。研究的三种不同的燃料是：纯菜籽油，89-9乳状液[9％甲醇-含89％菜籽油乳状液，含2％表面活性剂（w / w）]和85-12.5乳状液[12.5％甲醇-含-85％菜籽油乳状液，含2.5％表面活性剂（w / w）]。所有实验均在装有双流体雾化器和径向叶片旋流器的30 kW燃烧室中进行。将旋流器叶片以相对于垂直轴成60°和51°的角度定位，以分别获得1.40和1.0的旋流数（SNs）。燃料的当量比（ø）为0.83、0.91、1.0、1.05和1.11。最终分析，较高的热值（HHV），运动粘度和密度被用来表征燃料特性。实验结果表明，燃料类型和旋流数对排放水平有重大影响。在旋流数和所有当量比下，所有乳液均比纯菜籽油产生更低的NO_x，CO和未燃烧碳氢化合物排放。与纯菜籽油相比，乳液还产生更高的CO_2排放量。在比较乳液的性能时，可以看出向混合物中添加甲醇对燃烧特性具有肯定的积极影响。观察到，乳液中甲醇的百分比越高，NO_x，UHC和CO排放量越少。旋流器赋予二次空气的涡旋性也极大地影响了排放水平。在较高的旋流角下增加的涡流导致空气和燃料更好地混合，从而最大程度地降低了排放水平，尤其是在1.4的旋流数下。

著录项

  • 来源
    《Fuel》 |2013年第11期|97-106|共10页
  • 作者

    Shreyas Bhimani; Jorge L. Alvarado; Kalyan Annamalai; Charles Marsh;

  • 作者单位

    Department of Mechanical Engineering, Texas A&M University, College Station, TX 77843, USA;

    Department of Engineering Technology and Industrial Distribution, Texas A&M University, 118 Thompson Hall, 3367 TAMU, College Station, TX 77843-3367, USA;

    Department of Mechanical Engineering, Texas A&M University, College Station, TX 77843, USA;

    US Army, Engineer Research and Development Center, Construction Engineering Research Laboratory, 2902 Newmark Drive, Champaign, IL 61822-1076, USA Department of Nuclear Plasma and Radiological Engineering at the University of Illinois at Urbana-Champaign, 104 South Wright Street, Urbana, IL 61801, USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Canola oil; Methanol; Swirler; Emulsion; Twin-fluid atomizer;

    机译：菜籽油;甲醇;旋流器乳液;双流体雾化器;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号