Influence of masks protecting against sars-cov-2 on thermal comfort

Abstract

Due to the spread of the SARS-CoV-2 virus, most countries have tightened their public health policies. One way to limit the spread of the virus is to make mouth and nose cover compulsory in public spaces. The article presents the impact of wearing masks on the perception of thermal comfort. The following masks were analysed: FFP2, cotton, medical, PM2.5, half-face protective shield plastic and full-face protective shield plastic. The research was carried out for two scenarios of an ambient temperature: −20 and 30◦C. A thermal manikin was used for the tests. In the case of when a temperature equals 20◦C, the dry masks increase comfort, both general and local, while wet masks reduce comfort. On the other hand, at 30◦C, only wet masks do not increase discomfort. In addition, moist masks require less heat flux to achieve a certain skin temperature. However, it should be remembered that it is not advisable to wet the masks from the health point of view.