Performance analysis of evaporatively-condensed cooling system in underground project

Abstract

In response to the difficulty of waste heat removal in underground confined spaces, a calculation model of evaporatively condensed cooling systems in underground projects has been established in this paper. Through calculation and analysis, the results show that among various influencing factors, the change in condensing temperature has the greatest influence on the cooling air volume. Increasing the condensing temperature can significantly reduce the air volume and air duct section, and there exists an optimal condensing temperature range that will reduce the total energy consumption and air volume of the system. On this basis, a calculation App for the optimal condensing temperature of the cooling system under different working conditions was designed, and the cooling system of a practical project was optimized, greatly reducing the difficulty and cost of air duct construction.