Eastern Macedonia and Thrace Institute of Technology
Abstract
To effectively improve the climate conditions of the excavation roadway in coal mine, the calculation of the chilling
requirement taking air conditioning measures is extremely necessary. The temperature field of the surrounding rock with
moving boundary in the excavation roadway was numerically simulated by using finite volume method. The unstable
heat transfer coefficient between the surrounding rock and air flow was obtained via the previous calculation. According
to the coupling effects of the air flow inside and outside air duct, the differential calculation mathematical model of air
flow temperature in the excavation roadway was established. The chilling requirement was calculated with the selfdeveloped
computer program for forecasting the required cooling capacity of the excavation roadway. A good air
conditioning effect had been observed after applying the calculated results to field trial, which indicated that the
prediction method and calculation procedure were reliable