Motive column : Ø The natural ventilation air current flow around the mine simply because the downcast air column is heavier than the...

VENTILATION Ventilation of mines is a form of air conditioning by the distribution of air currents in U/G opening in quantity sufficient...

ATKINSON'S EQUATION Before discussing Atkinson's formual/equation . we have to understand the LAW'S OF MINE AIR FRICTION, then we can...

Methane Explosibility Curve If you want to find out the flammability of methane-air mixtures, explosibility curve of methane is extremely...

AXIAL FLOW FAN It consists of a shaft with a hub (Boss). A number of blades are attached to the hub. The salient constructional features...

FAN LAWS The fan laws are a set of proportionalities relating each of the following parameters of airflow with fan speed (n), air density...

Motive column Motive column is a height of imaginary column of air that produces a pressure equal to difference of pressure between...

Natural ventilation- Mine Airflow caused by pressure difference between upcast & downcast shaft [Because of unequal densities of weight...