It is well known that the most effective method of air distribution in high-heat
areas is displacement ventilation with a variable air loss according to changeable
operating conditions. Dense equipment arrangement makes requirements to air
distribution even higher. The necessity of spreading jets till they reach convective
flows is shown. To slow down these jets uniform air supply is required at the exit of
an air distributor. Modern devices do not fully meet this requirement. The suggested
method of air supply ensures uniform air distribution and thorough ventilation
of the area at a changed expenditure of inflowing air.