Citation

Li N, Chang S, Guo Z, He J, Yuan M. China Saf. Sci. J. 2020; 30(3): 178-184.

Copyright

(Copyright © 2020, China Occupational Safety and Health Association, Publisher Gai Xue bao)

DOI

10.16265/j.cnki.issn1003-3033.2020.03.027

PMID

unavailable

Abstract

In order to quantitatively study the heat and moisture transfer performance of SRBA and improve the thermal comfort of SRBA, a thermal manikin was used to measure and analyze thermal insulation and evaporative resistance of cooling vest, SRBA and both stacks at different temperatures (25, 30, 40 ℃) and humidity (40%, 55%, 70%). It is found that the thermal insulation changes at the three temperatures measured as SRBA> both stacks > cooling vest, and the evaporative resistance follows this characteristic above 30 ℃, that the higher the temperature is, the greater the effect of the cooling vest on the heat transfer efficiency of the SRBA will be, and that the thermal insulation can be reduced by up to 46.75% and the evaporative resistance can be reduced up to 82.97%. The results show that at higher ambient temperature (> 30 ℃), the cooling vest can effectively reduce the thermal insulation and evaporative resistance of the SRBA and improve the heat and moisture transfer efficiency, and that the influence of the cooling vest on the heat and moisture transfer of the SRBA changes with the ambient temperature, humidity and design characteristics. © 2020 China Safety Science Journal. All rights reserved.

Language: zh