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On-road air quality and the effect of partial recirculation on in-cabin air quality for vehicles.

机译:道路空气质量以及部分再循环对车辆舱内空气质量的影响。

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摘要

The California Air Resource Board (CARB) recently reported that due to exposure to particle emissions, 9,000 people die annually in California alone [11]. A method for quantifying the exposure during a daily commute as well as reducing the exposure for the passengers has been developed. A fractional recirculation of cabin air was proposed and studied to improve cabin air quality by reducing cabin particle concentrations. Vehicle tests were run with differing number of passengers (1, 2, 3, and 4), four fan speed settings and at 15, 40, and 70 mph. A manual control was installed for the recirculation flap door so different ratios of fresh air to recirculated air could be used. Full recirculation is the most efficient setting in terms of thermal management and particle concentration reduction, but this causes elevated CO2 levels in the cabin [5]. The study demonstrated cabin CO2 concentrations could be controlled below a target level of 2000ppm at various driving conditions and fan speeds with more than 85% of recirculation. Additionally, some energy saving is also expected with the air conditioning system. More recirculation means less energy is required to cool the cabin air, as opposed to cooling 100% outside air under hot weather conditions. The proposed fractional air recirculation method is a simple yet innovative way of improving cabin air quality.
机译:加利福尼亚州空气资源委员会(CARB)最近报告说,由于暴露于颗粒物排放,仅加利福尼亚州每年就有9000人死亡[11]。已经开发出一种用于量化每天通勤期间的暴露以及减少乘客的暴露的方法。提出并进行了部分机舱空气再循环,并进行了研究,以通过降低机舱颗粒浓度来改善机舱空气质量。在不同人数的乘客(1、2、3和4),四个风扇速度设置以及15、40和70 mph的情况下进行了车辆测试。为再循环风门安装了手动控制器,因此可以使用新鲜空气与再循环空气的不同比例。就热管理和降低颗粒浓度而言,完全再循环是最有效的设置,但这会导致机舱内的CO2浓度升高[5]。这项研究表明,在各种驾驶条件和风扇转速下,车厢内的二氧化碳浓度可以控制在2000ppm的目标水平以下,再循环率超过85%。此外,空调系统还有望节省一些能源。与炎热天气条件下冷却100%的室外空气相反,更多的再循环意味着冷却机舱空气所需的能量更少。提议的分数空气再循环方法是一种改善机舱空气质量的简单但创新的方法。

著录项

  • 作者

    Grady, Michael Lee.;

  • 作者单位

    University of California, Riverside.;

  • 授予单位 University of California, Riverside.;
  • 学科 Engineering Mechanical.
  • 学位 M.S.
  • 年度 2013
  • 页码 53 p.
  • 总页数 53
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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