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    吕阳

    • 副教授     博士生导师   硕士生导师
    • 性别:男
    • 毕业院校:日本东北大学
    • 学位:博士
    • 所在单位:土木工程系
    • 学科:供热、供燃气、通风及空调工程
    • 办公地点:大连市高新园区凌工路2号大连理工大学土木工程学院3号楼326室
    • 电子邮箱:lvyang@dlut.edu.cn

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    The transmission characteristics of indoor particles under two ventilation modes

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    论文类型:期刊论文

    第一作者:Lv, Yang

    通讯作者:Lv, Y (reprint author), Dalian Univ Technol, Sch Civil Engn, Dalian 116024, Peoples R China.

    合写作者:Wang, Haifeng,Wei, Shanshan

    发表时间:2018-03-15

    发表刊物:ENERGY AND BUILDINGS

    收录刊物:SCIE、EI

    卷号:163

    页面范围:1-9

    ISSN号:0378-7788

    关键字:Indoor particles; Ventilation modes; Distribution characteristics; Air exchange rate; Attenuation index

    摘要:In modern society, ventilation is an important method for removing indoor particles. This study applies the parameter of attenuation index to analyse the effect of the removal of indoor particles in the two typical ventilation modes called ceiling exhaust and slit exhaust. Experiment was conducted in a chamber and riboflavin particles were used as the indoor particles source, instantaneous microbial detection (IMD) used to measure the particulate concentration. The results showed there was obvious concentration difference in the vertical distribution for the slit exhaust when indoor particles tended stable, and the smaller the particle size was, the more obvious the difference was. Air exchange rate (ACH) is an important factor affecting the indoor particle concentration distribution. In the process of indoor free settling (air exchange rate is 0 ACH), the sedimentation rate were 0.086 h(-1), 0.122 h(-1) and 0.173 h(-1) for the particles of 0.5-1.0 mu m, 1.0-3.0 and 3.0-5.0 mu m. When the air exchange rate increased to 2.5 ACH, the differences in the attenuation index is significant. There was also a significant linear relationship between air exchange rate and attenuation index. Furthermore, the effect of the slit exhaust mode on the removal of coarse particles is more remarkable as the increasing air exchange rate. (C) 2017 Elsevier B.V. All rights reserved.