Numerical analysis of moisture ventilation in a lithium ion battery manufacturing dry room

In this paper, the characteristics of moisture ventilation in a lithium ion battery manufacturing dry room are studied numerically using the standard k - epsilon turbulence model. Both the steady-state and the unsteady behavi or of moisture ventilation are analyzed by considering two different cases; i.e.., local moisture generation and uniformly distributed moisture genera tion in the room. In order to evaluate the characteristics of moisture vent ilation, three scales of ventilation efficiency and characteristic ventilat ion time are presented from the numerical results. It is shown that moistur e distribution is dependent strongly on the flow field. The characteristics of moisture ventilation are improved by 20% and 40% in terms of the Ist sc ale of ventilation efficiency (SVE1) and the 2nd scale of ventilation effic iency (SVE2), respectively, through the modifications of design variables s uch as the addition of inlets, outlets and partition. A significant improve ment in the characteristic ventilation time and the moisture exhaust effici ency is also achieved by these modifications.