...
首页> 外文期刊>Energy and Buildings >Full scale experimental study of single-sided ventilation: Analysis of stack and wind effects
【24h】

Full scale experimental study of single-sided ventilation: Analysis of stack and wind effects

机译:单面通风的全面实验研究:烟囱和风的影响分析

获取原文
获取原文并翻译 | 示例
           

摘要

Natural ventilation can contribute to the reduction of the air conditioning demand and to the improvement of thermal comfort in buildings. In this paper, the flow field and the air change rate generated by a simple configuration of natural ventilation, namely single-sided ventilation, are examined experimentally. The experiments are realized in a full scale building exposed to outdoor conditions, using several measurement techniques. The main features of the flow generated by stack and wind effect are examined for different outdoor conditions (temperature difference, wind speed and direction). Finally, measured air change rates are compared to those calculated by existing correlations in order to analyze their applicability to the experimental configuration. Results show that the wind generates turbulence diffusion at the opening, counteracting the stack effect. Moreover, in the case of windward opening, there is an additional effect, namely the effect of mixing layer, which tends to increase the airflow rate. Existing correlations give reasonably good results in the case of windward opening, while in the case of leeward opening they overestimate the airflow rate.
机译:自然通风可有助于减少空调需求并改善建筑物的热舒适性。在本文中,通过自然通风的简单配置(即单面通风)产生的流场和换气率将通过实验进行检验。使用多种测量技术,可在暴露于室外条件的大型建筑物中进行实验。针对不同的室外条件(温度差,风速和风向)检查了烟囱产生的气流和风效应的主要特征。最后,将测得的空气变化率与现有相关性计算出的空气变化率进行比较,以分析其对实验配置的适用性。结果表明,风在开口处产生湍流扩散,抵消了烟囱效应。而且,在迎风打开的情况下,存在另外的效果,即混合层的效果,其趋向于增加气流速率。现有的相关性在迎风打开的情况下会给出相当好的结果,而在背风打开的情况下会高估气流速率。

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