...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Building and Environment >Setting the standard: The acceptability of kitchen ventilation for the English housing stock
【24h】

Setting the standard: The acceptability of kitchen ventilation for the English housing stock

机译：制定标准：英国房屋库存的厨房通风可接受性

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

Exposure to particulate matter with diameter <= 2.5 mu m (PM2.5) is associated with an elevated risk of adverse health effects and cooking is a primary source of PM2.5 in non-smoking households. Therefore, it is important to investigate PM2.5 concentrations that might be found in domestic kitchens, and the appropriate ventilation mechanisms to reduce them.Uncertainty in daily mean PM2.5 concentrations in English kitchens is predicted using a statistical model and stochastic simulation. A worst-case heating season scenario is considered where 3 meals are cooked per day and fresh air is provided by infiltration and fans.The model predicts that > 98% of English houses are too airtight to dilute PM2.5 emissions solely by infiltration so that daily mean concentrations in kitchens are below the WHO guideline of 25 mu g/m(3). Therefore, controlled ventilation is required in all kitchens. Ventilation strategies prescribed by English Building Regulations and ASHRAE 62.2 are found to be adequate for < 12% and 75% of houses, respectively, when applied during cooking. Continuing to ventilate for a further 10 minutes has a significant effect when using an intermittent strategy, increasing the centiles of compliant houses to 46% and > 98%, respectively. A cooker hood is the most effective ventilation strategy when used during cooking plus 10 minutes. Standards should be amended to incorporate required combinations of airflow rates and capture efficiencies. A hood with a capture efficiency of 50% requires airflow rates of 52 l/s and 90 l/s for PM2.5 concentrations to remain below WHO guidelines in 75% and 98% of houses, respectively.
机译：暴露于直径小于等于2.5微米（PM2.5）的颗粒物会增加不利健康影响的风险，而烹饪是非吸烟家庭PM2.5的主要来源。因此，调查家用厨房中可能存在的PM2.5浓度以及降低其的合适通风机制非常重要。使用统计模型和随机模拟预测英国厨房中PM2.5的每日平均浓度的不确定性。考虑到最坏的供暖季节情况，每天要煮三顿饭，并由渗透和风扇提供新鲜空气。该模型预测，> 98％的英国房屋太密闭，无法仅通过渗透来稀释PM2.5排放，因此厨房中的日平均浓度低于WHO准则25μg/ m（3）。因此，所有厨房都需要控制通风。当在烹饪过程中使用时，发现英国《建筑规范》和ASHRAE 62.2规定的通风策略分别适用于<12％和75％的房屋。使用间歇性策略时，继续通风10分钟具有显着效果，可将合规房屋的百分率分别提高到46％和> 98％。抽油烟机在烹饪过程中使用10分钟以上是最有效的通风策略。应修订标准以纳入所需的气流速率和捕集效率的组合。捕获效率为50％的抽油烟机要求PM2.5浓度的空气流率分别为52 l / s和90 l / s，才能分别低于75％和98％的房屋的WHO准则。

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