自然通风模式下开放式办公室内局部热舒适的数值分析  

Numerical Analysis of Local Thermal Comfort in an Open Plan Office under Natural Ventilation Mode

作　　者：邓翔 薛雪 樊文科 DENG Xiang;XUE Xue;FAN Wen-ke(School of Automation Science and Engineering,South China University of Technology,Guangzhou 510000,China;Research and Development Centre,Shenzhen DAS Intellitech Co.,Ltd.;Research and Development Centre,Hanergy Thin Film Power Group,Shenzhen 518000,China;Sustainable Buildings Research Centre,University of Wollongong,Wollongong 2519,Australia)

机构地区：[1]华南理工大学自动化科学与工程学院,广州510000 [2]深圳达实智能股份有限公司研发中心 [3]汉能薄膜发电集团深圳研发中心,深圳518000 [4]伍伦贡大学可持续建筑研究中心,伍伦贡2519

出　　处：《科学技术与工程》2019年第28期304-311,共8页Science Technology and Engineering

摘　　要：自然通风研究应该重点关注人员活动区域而非建筑整体的热舒适性。为了对采用自然通风的办公室的局部热环境情况进行探究,以某办公大楼为例,通过基于Fluent模拟和实地测试的方法对其采用窗户自动控制系统进行自然通风的开放式办公室的局部热环境情况进行了数值模拟。根据模拟结果,讨论了在不同的室外气象参数条件及其对应的通风控制模式下,室内人员活动区的室内预测平均评价和吹风感两个指标表现情况。结果表明,现有自然通风控制策略的室外温度选取范围偏低,在室外气温较低或强风的情况下,仍存在室内预测平均评价偏低和吹风感强的风险。研究对建筑窗户通风控制系统的优化设计具有重要的参考价值。Primary focus of natural ventilation for indoor thermal comfort maintenance should be on occupied area rather than the whole building. In order to better understand the local thermal comfort conditions in naturally ventilated buildings,an office building was selected as an example to perform a computational fluid dynamics( CFD) method based analysis of the local thermal environments of the building’s open plan office where automatic window control was adopted for natural ventilation. Based on the emulated results,two thermal performance indices,i. e. the extended predicted mean vote( PMVe) and draught rate( DR) were employed to evaluate the thermal comfort levels of the interested areas under different outdoor weather conditions and the corresponding window control states. The numerical results indicate a lower temperature range selected for natural ventilation in the current control algorithm and reveals a risk of lower PMVe and higher DR values in the event of low outdoor air temperature and strong wind. This study can be used as an important reference for the design of window control system in naturally ventilated buildings.

关 键 词：自然通风 局部热舒适 计算流体力学 热舒适指标 窗户控制 

分 类 号：TU834.1[建筑科学—供热、供燃气、通风及空调工程]