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Effect of natural ventilation on indoor air quality and thermal comfort in dormitory during winter

机译：冬季自然通风对宿舍室内空气质量和热舒适度的影响

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摘要

This study is to prove that natural ventilation is necessary for students' sleeping even in Beijing's 9 degrees C winter and explain that opening windows at proper width will decrease the indoor temperature slightly, but obviously reduce the CO2 concentration. The indoor air quality in dormitories was monitored experimentally at different ventilation areas (from 0.011 m(2) to 0.11 m(2)), and the thermal comfort and mental state of the students after 7 h of sleep were analyzed through a questionnaire survey. Results showed that indoor air quality generally improved with the increase in natural ventilation area, whereas the thermal comfort level gradually declined. Approximately 0.055 m(2) is the appropriate natural ventilation area (corresponding to 0.036 m(3)/s natural ventilation rate) for dormitories with 10-12.5 m(3) per capita space during Beijing's winter. In addition, a model was proposed for window opening to predict indoor air quality and temperature in different natural ventilation areas during winter nights. With increasing the student number in dormitory, it is necessary to increasing the windows open area, and once the per capita space is less than 6.5 m(3), the indoor air quality cannot meet the comfortableness only by windows opening. (C) 2017 Elsevier Ltd. All rights reserved.
机译：这项研究旨在证明即使在北京9摄氏度的冬季，自然通风对于学生的睡眠也是必要的，并说明以适当的宽度打开窗户会稍微降低室内温度，但明显降低CO2浓度。在不同通风区域（从0.011 m（2）到0.11 m（2））通过实验监测宿舍的室内空气质量，并通过问卷调查分析学生睡眠7小时后的热舒适度和心理状态。结果表明，室内空气质量总体上随着自然通风面积的增加而改善，而热舒适度逐渐下降。在北京冬季，人均空间为10-12.5 m（3）的宿舍大约为0.055 m（2）是适当的自然通风区域（相当于0.036 m（3）/ s的自然通风率）。此外，提出了一个用于打开窗户的模型，以预测冬季夜晚不同自然通风区域的室内空气质量和温度。随着学生人数的增加，有必要增加开窗面积，一旦人均空间小于6.5 m（3），室内空气质量仅靠开窗就无法满足舒适度。 （C）2017 Elsevier Ltd.保留所有权利。

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  • 来源
    《Building and Environment》 |2017年第11期|240-247|共8页
  • 作者

    Lei Zhangping; Liu Chuanping; Wang Li; Li Na;

  • 作者单位

    Univ Sci & Technol Beijing, Sch Energy & Environm Engn, Beijing 100083, Peoples R China;

    Univ Sci & Technol Beijing, Sch Energy & Environm Engn, Beijing 100083, Peoples R China;

    Univ Sci & Technol Beijing, Sch Energy & Environm Engn, Beijing 100083, Peoples R China|Beijing Engn Res Ctr Energy Saving & Environm Pro, Beijing 100083, Peoples R China;

    Univ Sci & Technol Beijing, Sch Energy & Environm Engn, Beijing 100083, Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Natural ventilation; Indoor air quality; Thermal comfort;

    机译：自然通风;室内空气质量;热舒适度;

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