Influence of indoor airflow regulation on human health in hot-humid areas

Airflow regulation plays a key role in improving the quality of the summer thermal environment in hot-humid areas.However,most studies have focused on the positive effects of airflow on human overall thermal comfort,while ignoring the potential effects of airflow local exposure on human health.In this study,a questionnaire survey is conducted in 21 prefecture-level cities in Guangdong Province from August to October 2023 using the random sampling method,and a total of 1 349 valid questionnaires are collected.The statistical analysis results show that when the airflow temperature is too low or the airflow mainly acts on sensitive parts such as forehead,abdomen,and temples,it is most likely to cause the symptoms such as headache,runny nose,and facial paralysis.In terms of age and gender differences,young people are more likely to suffer from such symptoms due to the influence of airflow than other age groups,and females are more reluctant to be directly blown by airflow than males.These findings can provide support for the development of healthy airflow control strategies for different populations in hot-humid areas,which is conducive to improving the quality of life and health of urban residents.