Zonal guarantee technology of indoor environment for the underground diesel generator plant, part II: Application

In this paper the ZGT (zonal guarantee technology), which has been introduced in the companion paper, is applied to the deep-buried underground engineering. Then, four novel ventilation and cooling systems for the underground diesel generator plant are presented. The optimization of the location of the fume exactor and exhaust duct and the speed of the supply air is done by the CFD simulation for one of the ventilation and cooling system. The results show that the ZGT could remove the residual heat and contaminant effectively. It is also advised that the form 1, in which the heated air is exhausted by both sides of the duct and the fume exactor locates on the lower right of the duct, may be the most effective one. According to the numerical experiment, the temperature and the velocity profile are controlled strictly when the speed of supply air is 0.8 m/s.