A study of the inhibitory effect and mechanism of airflow regarding mould on building surfaces  

作　　者：Hongling Zhang Hui Zhang Edward Arens Ling Jin Yingdong He Erxun Zhou Linxuan Zhou Jinhua Hu 

机构地区：[1]School of Water Conservancy and Civil Engineering,South China Agricultural University,Guangzhou 510642,China [2]Center for Built Environment,University of California Berkeley,CA 94720,USA [3]College of Civil Engineering,Hunan University,Changsha 410082,China [4]College of Plant Protection,South China Agricultural University,Guangzhou 510642,China [5]College of Civil Engineering,Hunan University of Science and Technology,Xiangtan 411201,China

出　　处：《Frontiers of Architectural Research》2024年第5期1067-1078,共12页建筑学研究前沿（英文版）

基　　金：National Natural Science Foundation of China(Grant No.51708228);GD Midea Environment Appliances MFG.Co.,Ltd.

摘　　要：Air movement dries surfaces by increasing evaporation and convection,which may prevent mould growth.Cladosporium sp.is used as the test organism(dominant fungi in the envelope of rural houses in hot summer and warm winter areas),and the effect of fans on inhibiting mould growth on building materials is investigated.Surface mould growth on materials was simulated and compared after rain leakage and surface condensation,and spore germination was studied in high humidity,with or without airflow.The results are as follows:(1)Airflow has an evident inhibitory effect on mould growth on wet building materials.This observation was linked to the availability of moisture content in the building materials.(2)Airflow can slow the appearance of visual mould on the material surface.Mould did not appear on the gypsum surface due to the airflow,and mould growth on a wood surface was delayed for about two days.(3)Periodically,spore eluates were examined by electron microscopy to determine the stage of spore germination,and it was found that airflow delayed mould spore germination for about 2-3 days.

关 键 词：Building envelope MOULD AIRFLOW SPORES Building material 

分 类 号：TU50[建筑科学—建筑技术科学] TU111.4