关于孔板送风建筑室内新风量的探讨——室内人员呼吸区所需最小新风量的实验研究  

Fresh Air Requirement in Buildings with Perforated Ceiling Air Supply——an Experimental Study on Minimum Fresh Air Requirement in Breathing Zone of Indoor Occupant

作　　者：王杰村 周斌[1] 刘金祥[1] 谈美兰[1] 陈丽萍[1] 

机构地区：[1]南京工业大学,南京210009

出　　处：《建筑科学》2015年第4期50-55,共6页Building Science

基　　金：南京工业大学科研启动基金"针对室内空气品质;人体呼吸污染物方面的研究"(39114111)

摘　　要：本文研究了办公建筑中采用孔板送风时所需的最小新风量,参考并采用我国的GB 50736—2012《民用建筑供暖通风与空气调节设计规范》、《日本空调设计手册》、美国ASHRAE Stand62.1—2010中的标准送风量分别进行送风,在每个新风标准下调节人员密度,以引起人体头痛、闷热的室内CO2浓度0.1%作为标准进行比较,得出办公建筑采用孔板送风时人员移动与静坐两种状态时不同的人员密度所对应的最小新风量标准。实验结果表明:在人员移动时,人员密度小于等于0.21人/m2时建议采用美国ASHRAE Standard62.1—2010的新风标准推荐值,当人员密度介于0.21人/m2与0.28人/m2之间时建议采用《日本空气调节手册》的新风标准推荐值;当人员密度介于0.28人/m2与0.42人/m2之间时建议采用我国的GB50736—2012《民用建筑供暖通风与空气调节设计规范》的新风标准推荐值。在人员静坐时,人员密度小于等于0.14人/m2时建议采用美国ASHRAE Stand62.1—2010或者《日本空气调节手册》的新风标准推荐值;当人员密度介于0.14人/m2与0.21人/m2之间时建议采用《日本空气调节手册》的新风标准推荐值;当人员密度介于0.21人/m2与0.35人/m2之间时建议采用我国的GB 50736—2012《民用建筑供暖通风与空气调节设计规范》的新风标准推荐值。人员静坐时呼吸区的CO2浓度比人员移动时的CO2浓度高15%左右,办公建筑中人员处于移动与静坐的交叉状态,因而进行新风量选择时可按人体静坐时的标准进行选择。The minimum fresh air requirement in office buildings using perforated ceiling air supply was studied. Air was supplied in accordance with the standard air output specified in GB50736--2012 of China, Air Conditioning Design Manual of Japan and ASHRAE Standard 62.1--2010 of USA, respectively. Occupant density was adjusted under each standard. The indoor CO2 concentration of 0. 1% that causes headache and sense of sweltering was considered as the criterion for comparison. The minimum fresh air requirement corresponding to different occupant densities when occupants move or sit quietly in buildings with perforated ceiling air supply was then obtained. The results showed that： when occupants moved, the recommended fresh air requirement in ASHRAE Standard 62. 1--2010 of USA was preferred if the occupant density was less than or equal to 0.21 person/m^2, the recommended fresh air requirement in Air Conditioning Design Manual of Japan was preferred if the occupant density was between 0.21 person/m^2 and 0.28 person/m^2 , and the recommended fresh air requirement in GB50736-2012 of China was preferred if the occupant density was between 0.28 person/m^2 and 0.42 person/m^2 ; when occupants sat quietly, the recommended fresh air requirement in ASHRAE Standard 62.1--2010 of USA or in Air Conditioning Design Manual of Japan was preferred if the occupant density was less than or equal to 0.14 person/m^2, the recommended fresh air requirement in Air Conditioning Design Manual of Japan was preferred if the occupant density was between 0. 14 person/m^2 and 0.21 person/m^2 ; the recommended fresh air requirement in GB50736--2012 of China was preferred if the occupant density was between 0.21 person/m^2 and 0.35 person/m^2. The CO2 concentration in breathing zone when occupants sat quietly was about 15% higher than that when occupants moved. In reality, the staff in office buildings moves or sits quietly from time to time, so the fresh air requirement can be determined according to the standards when people sit quietly.

关 键 词：孔板送风 最小送风量 人员密度 

分 类 号：TU831.1[建筑科学—供热、供燃气、通风及空调工程]