摘要
为确切了解夏季屋顶架空绿藤棚对南方民宅室内外热环境的防热效果,本文以厦门兑山村的典型民宅为研究对象在2014年8月9日~10日进行实测研究,对比包括"遮蔽房和无遮蔽房的空气温度、相对湿度、黑球温度、风速、顶棚表面温度、室内热舒适PMV值、屋顶地表温度、屋顶室外热舒适SET值",实验结果遮蔽房的室内PMV平均值为2.08,比无遮蔽房低0.84,尤其是20:30~次日10:30能提供14 h左右的PMV值1.3~2.0相对好的热舒适环境,午后室内PMV值下降相对无遮蔽房更明显且快速。绿藤棚灰空间的WBGT值低于32℃且显著低于露台,绿藤棚灰空间的SET值白天在30~35℃感受稍热,明显低于露台区域的30~38.55℃。结论证明绿藤棚的防热效果对于屋顶空间及遮蔽房都有明显作用,辅助降低空调能耗。
In order to know heat shielding of green pergola on the roof of residential buildings in Southern China in summer, this paper is targeted to typical residential buildings in Duishan Village, Xiamen City, and provides study on measurements of the residential buildings from August 9 to August 10, 2014 by measuring and comparing such climatic parameters as ＂air temperature, air humidity, black globe temperature, air velocity, surface temperature of roof floor, PMV value of indoor area, roof surface temperature, outdoor thermal comfort SET value of outdoor area on the roof of shielded and unshielded buildings＂. The measurement results show that the average of PMV is 2.08, which is 0. 84 lower than that of unshielded rooms, especially in the time frame of 20：00 - 10：30 when it can support about 14 hour thermal comfort time while its PMV is 1.3 -2.0, and the PMV drops faster in the afternoon; the WBGT of pergola grey space is lower than 32 ℃ and remarkably lower than the terrace, and its SET is 30 ~ 35 ℃ which is a little hotter, yet it is far below the temperature of the terrace which is 30 ~ 38.55 ℃. It is concluded that green pergola is of great significance to heat shielding of roof and shielded rooms and is helpful to reduce air- conditioning energy eonsumption.
出处
《建筑科学》
CSCD
北大核心
2017年第10期13-20,共8页
Building Science
基金
国家自然科学基金青年基金项目"南方炎热地区民宅附加棚幔被动式防热及建筑化改造研究"(51308231)
华侨大学中央高校基本科研业务费专项基金项目"国际先进建筑设计理念的闽南地域化适应模式研究"(ZQN-PY118)
福建省自然科学基金项上项目上(2015J01637)
关键词
屋顶遮阳
屋顶绿化
预计平均热感觉指数
湿球黑球温度
标准有效温度
湿热气候
roof sunshade, roof greening, predicted mean vote （PMV） , wet bulb globe temperature （ WBGT）,standard effective temperature （SET） , hot and humid climate
