不同送回风方式对主动式置换通风住宅室内环境的影响
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摘要
随着人们对改善工作以及生活环境的要求越来越迫切,室内环境成为人们越来越关注的问题,置换通风因其舒适度高、空气品质良好、节能等优点,得到了国内外学者的广泛关注。不同送回风方式对主动式置换通风的效果具有很大影响,利用计算流体力学(CFD)方法,针对某住宅建筑三种通风方式下的室内速度场、室内CO2浓度、室内PM2.5浓度等进行了模拟研究。研究结果表明,单送单回方式通风时,通风效果明显弱于多送单回与多送多回方式,而室内CO2浓度和室内PM2.5浓度均较高;冬季室内CO2浓度较高,夏季室内PM2.5浓度较高。
With the urgency of improving the work and living environment, the indoor environment has been a considerable problem for the people. Displacement ventilation has received wide attention from overseas and domestic scholars because of its high comfort, good air quality, energy saving and other advantages. However, the different ventilation patterns have great influence on the effect of active displacement ventilation. This paper established three ventilation models of residence and used computational fluid dynamics(CFD) method to study indoor wind speed, concentration of CO2 and PM2.5. The results indicates that the ventilation method of an inlet with an outlet is less ventilation effect than the ventilation methods of multiple inlets with an outlet and multiple inlets with multiple outlets. Furthermore, the concentration of CO2 in winter is highest and the concentration of PM2.5 in summer is highest under the ventilation method of an inlet with an outlet.
With the urgency of improving the work and living environment, the indoor environment has been a considerable problem for the people. Displacement ventilation has received wide attention from overseas and domestic scholars because of its high comfort, good air quality, energy saving and other advantages. However, the different ventilation patterns have great influence on the effect of active displacement ventilation. This paper established three ventilation models of residence and used computational fluid dynamics(CFD) method to study indoor wind speed, concentration of CO2 and PM2.5. The results indicates that the ventilation method of an inlet with an outlet is less ventilation effect than the ventilation methods of multiple inlets with an outlet and multiple inlets with multiple outlets. Furthermore, the concentration of CO2 in winter is highest and the concentration of PM2.5 in summer is highest under the ventilation method of an inlet with an outlet.
引文
[1]杨永建.室内空气质量与人体健康[J].中国科技信息,2007,(13):158-159.
[2]曹富军,李波,王若飞,等.冬季三种通风方式下室内环境的数值模拟[J].建筑热能通风空调,2008,(1):59-62.
[3]曹建伟,任庆元.置换通风空调室内空气品质的数值模拟研究[C].全国暖通空调专业委员会空调模拟分析学组学术交流会,2009.
[4]韩海涛,张吉光.置换通风与室内空气品质[J].制冷与空调,2004,18(4):32-35.
[5]徐丽,翁培奋,孙为民.三种通风方式下的室内气流组织和室内空气品质的数值分析[J].空气动力学学报,2003,21(3):311-319.
[6]刘玉峰,徐永清.房间气流组织对污染物空间分布的影响[J].山东科技大学学报(自然科学版),2004,(2):104-107.
[7]姚军,荣煜.不同回风口位置对层状通风办公室内环境的影响[J].洁净与空调技术,2015,(1):7-14.
[8]黄育华.重庆市办公建筑室内外颗粒物浓度水平及暴露评价[D].重庆:重庆大学,2013.
[2]曹富军,李波,王若飞,等.冬季三种通风方式下室内环境的数值模拟[J].建筑热能通风空调,2008,(1):59-62.
[3]曹建伟,任庆元.置换通风空调室内空气品质的数值模拟研究[C].全国暖通空调专业委员会空调模拟分析学组学术交流会,2009.
[4]韩海涛,张吉光.置换通风与室内空气品质[J].制冷与空调,2004,18(4):32-35.
[5]徐丽,翁培奋,孙为民.三种通风方式下的室内气流组织和室内空气品质的数值分析[J].空气动力学学报,2003,21(3):311-319.
[6]刘玉峰,徐永清.房间气流组织对污染物空间分布的影响[J].山东科技大学学报(自然科学版),2004,(2):104-107.
[7]姚军,荣煜.不同回风口位置对层状通风办公室内环境的影响[J].洁净与空调技术,2015,(1):7-14.
[8]黄育华.重庆市办公建筑室内外颗粒物浓度水平及暴露评价[D].重庆:重庆大学,2013.