The Optimization of A Multiple Fan Ventilation Network. A study on the optimum control of a mine ventilation system (3 rd Report).

There are many ventilation networks utilizing multiple fan system. Not only the airflow distribution analysis but also the optimization of such ventilation networks are affected by the interaction of these fans. This paper describes the influence of the interaction of fans on the optimization of the network.Firstly, fundamental procedures for the optimization of multiple fan network are explained. They are similar to those for a single fan network, the interaction of the fans interferes the convergence of the analysis to the optimum conditions depending on the configurations of the network and fans. The economical conditions of such a procedures will be deduced theoretically.An improved method for optimization of multiple fan network system in various condition is developed on the basis of the theory. Finally, criteria for checking the optimization of a multiple fan ventilation network is proposed and several examples of the application will be shown.