The effect of air-conditioning parameters and deposition dust on microbial growth in supply air ducts
The effect of air-conditioning parameters and deposition dust on microbial growth in supply air ducts
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空调参数和沉积粉尘对送风管道微生物生长的影响
DOI：
10.1016/j.enbuild.2009.10.013
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发表时间：
2010-04-01
影响因子：
6.7
通讯作者：
Wang, Qingqin
中科院分区：
文献类型：
--
作者：
Li, Angui;Liu, Zhijian;Wang, Qingqin
为了研究空调参数（包括温度、相对湿度和风速）和沉积粉尘对送风管道中微生物生长的影响，根据ASHRAE标准62.1-2007构建了一套完整的测试装置。在不同的工作条件（如不同的温度和相对湿度）下进行了一系列测试微生物浓度（包括细菌和真菌）的实验。空气速度恒定地保持在2.0m/s。采用正交设计对试验数据进行分析。结果表明，送风风速沿送风方向的衰减在一定程度上影响了风管底部粉尘的分布，微生物数量与粉尘量呈正相关。在温度22-32 ℃、相对湿度40- 90%的范围内，随着温度的升高和相对湿度的增加，微生物的生长速度明显加快。粉尘中的有机物对微生物的生长也有很大的影响。为控制空调室内微生物的生长，改善室内微环境提供了基础研究。(c)2009 Elsevier B. V.保留所有权利。
To investigate the effect of air-conditioning parameters (including temperature, relative humidity and air velocity) and deposition dust on microbial growth in supply air duct, a complete test facility according to ASHRAE Standard 62.1-2007 was constructed. A series of experiments for testing microbial concentration (including bacteria and fungus) were conducted under different working conditions (such as different temperatures and relative humidity). The air velocity was constantly kept at 2.0 m/s. Orthogonal design was employed for the analysis of test data. The results indicated that air velocity attenuation down the direction of the supply air affected dust distribution at the bottom of duct, to some extent, and the number of microorganisms was positively correlated with the quantity of dust. In the range of temperature 22-32 degrees C and relative humidity (RH) 40-90%, microbial growth significantly accelerated with higher temperature and RH increasing. The organic compounds composing the dust also had great impact on microbial growth. The basic researches are contributed to control the growth of microorganism and improve the indoor microenvironment in the air-conditioning room. (c) 2009 Elsevier B.V. All rights reserved.