Adaptive Wall-Based Attachment Ventilation:A Comparative Study on Its Effectiveness in Airborne Infection Isolation Rooms with Negative Pressure  

作　　者：Ying Zhang Ou Han Angui Li Li’an Hou Thomas Olofsson Linhua Zhang Wenjun Lei 

机构地区：[1]School of Building Services Science and Engineering,Xi’an University of Architecture and Technology,Xi’an 710055,China [2]Department of Applied Physics and Electronics,UmeåUniversity,UmeåSE 90187,Sweden [3]School of Thermal Engineering,Shandong Jianzhu University,Jinan 250101,China

出　　处：《Engineering》2022年第1期130-137,共8页工程（英文）

基　　金：supported by the Ministry of Science and Technology of China,the Chinese Academy of Engineering,a project on the risk prevention and control of the relationship between the spread of COVID-19 and the environment(2020YFC0842500 and 2020-ZD-15);the National Key Research and Development(R&D)Program of China(2017YFC0702800).

摘　　要：The transmission of coronavirus disease 2019(COVID-19)has presented challenges for the control of the indoor environment of isolation wards.Scientific air distribution design and operation management are crucial to ensure the environmental safety of medical staff.This paper proposes the application of adaptive wall-based attachment ventilation and evaluates this air supply mode based on contaminants dispersion,removal efficiency,thermal comfort,and operating expense.Adaptive wall-based attachment ventilation provides a direct supply of fresh air to the occupied zone.In comparison with a ceiling air supply or upper sidewall air supply,adaptive wall-based attachment ventilation results in a 15%–47%lower average concentration of contaminants,for a continual release of contaminants at the same air changes per hour(ACH;10 h^(-1)).The contaminant removal efficiency of complete mixing ventilation cannot exceed 1.For adaptive wall-based attachment ventilation,the contaminant removal efficiency is an exponential function of the ACH.Compared with the ceiling air supply mode or upper sidewall air supply mode,adaptive wall-based attachment ventilation achieves a similar thermal comfort level(predicted mean vote(PMV)of0.1–0.4;draught rate of 2.5%–6.7%)and a similar performance in removing contaminants,but has a lower ACH and uses less energy.

关 键 词：Ventilation efficiency Air change rate COVID-19 Attachment ventilation Air distribution Isolation ward 

分 类 号：R184.6[医药卫生—流行病学]