...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Building and Environment >Vertical ventilation concepts for future passenger cars
【24h】

Vertical ventilation concepts for future passenger cars

机译：未来乘用车的垂直通风概念

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

We compared three vertical ventilation concepts to dashboard ventilation in a generic car cabin with the aim to improve thermal passenger comfort and energy efficiency of future cars. Temperatures were analyzed with an infrared camera and local temperature sensors. Omnidirectional velocity probes were used to capture the fluid velocities and temperatures in the vicinity of thermal passenger dummies, which were used to simulate the thermal impact of the passengers. Further, the ventilation efficiency was measured with the tracer gas technique using humidity sensors in the vicinity of the dummies and in the air outlets. Besides the experimental investigations, the relevant flow cases were studied by Computational Fluid Dynamics simulations using the RANS method, providing insight into the complex and three-dimensional flow structures of the passenger compartment. Validation of the simulations with the experimental data revealed acceptable consistency, however, with local deviations indicating further need for experimental investigations. The ventilation efficiencies of the vertical ventilation concepts were at least comparable or even better as compared to dashboard ventilation. Regarding the comfort-relevant flow parameters, dashboard ventilation stood out with the lowest temperature stratification but revealed comfort-critical flow velocities. The vertical ventilation concepts allowed for comfortable velocities, but tended to produce comfort-critical temperature stratifications. Pursuing the equivalent temperatures, the vertical systems revealed an improved heating performance over dashboard ventilation. During summer and spring/fall conditions, low momentum ceiling ventilation as well as the combination of cabin displacement ventilation and low momentum ceiling ventilation were able to provide comfortable equivalent temperature distributions.
机译：我们将三种垂直通风概念与普通车厢中的仪表板通风进行了比较，目的是提高乘客的热舒适性和未来汽车的能源效率。用红外摄像机和本地温度传感器分析温度。全向速度探针用于捕获热乘客假人附近的流体速度和温度，用于模拟乘客的热冲击。此外，在假人附近和空气出口处使用示踪气体技术使用湿度传感器测量了通风效率。除了实验研究之外，还使用RANS方法通过计算流体动力学模拟研究了相关的流动情况，从而深入了解了客舱的复杂和三维流动结构。用实验数据进行的仿真验证显示出可接受的一致性，但是局部偏差表明还需要进行实验研究。与仪表板通风相比，垂直通风概念的通风效率至少可比甚至更高。关于与舒适度相关的流量参数，仪表板通风在最低温度分层方面表现突出，但显示出对舒适度至关重要的流速。垂直通风概念允许舒适的速度，但往往会产生对舒适性至关重要的温度分层。追求等效温度，垂直系统显示出比仪表板通风更高的加热性能。在夏季和春季/秋季情况下，低动量天花板通风以及机舱排气和低动量天花板通风的结合能够提供舒适的等效温度分布。

著录项

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