COSTS REDUCTION OF MAIN FANS OPERATION ACCORDING TO SAFETY VENTILATION IN MINES – A CASE STUDY

Considering the various hazards present in an underground mine, safe ventilation entails maintaining a certain airflow rate mining workings. The air velocity, and composition must be regulated network by operation of main fans. On other hand, costs minimized. Thus, optimal solution is when requisite safety features are fulfilled power output fans at minimal yet sufficient rate. In real-world mines, it common to have airstreams interlinking subnets current restructuring sector commonly involves connection different which leads increase number such cases. This article presents results research into networks containing these kind introduces new method for reducing costs. based on algorithm allows determination resistance stopping, head quantity distribution optimal. As result, total lowest level that yields reduction was applied two theoretical examples practical one taken from real network. first example, fan reduced 17.252 kW, gave annual 188.909 MWh, electricity cost €27014. Therefore, optimization enabled saving approximately 14% second 106.152 produced 1162.364 €166218. this case, allowed 40%. both examples, reductions did not affect For savings were 2343 corresponds €335000.