Abstract. Methods for calculation of thermal regime and heat loss parameter for underground tunnel into surrounding sub-soil were developed in first half of XX century, when the study of complex heatmass exchange processes between underground tunnel, sub-soil and outdoor air is started. In tunnel it need to be provided a specific microclimate parameters, that requires a certain load on environmental control system. At present time there are some methods for calculation of heat loss parameter for underground tunnel. In this paper the analysis of real methods of calculation of heat losses of underground tunnel is accomplished.
The paper is dedicated to the urgent issue - improvement of air environment parameters in the working zones of the civil building rooms. The specificity of such rooms impedes provision of the required air parameters using the standard air distribution diagrams. The authors have proposed a new type of the air distribution device based on the spot cooling of the working zones. The schematic diagram of the personalized air distribution device developed based on the textile terminal with micro-holes allowing supply of intake air in micro jets with small impulse to the worker's breathing zone is presented.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.