Air conditioning method in machine room having forced air-cooling equipment housed therein

Claim 1

An air conditioning method, comprising the steps of: supplying a cooling air generated from an air conditioner into an air passageway formed below a floor; guiding said cooling air within said air passageway into an equipment disposed on the floor through an opening made in the floor; releasing the cooling air introduced into said equipment into the free space within a room; and introducing the air within the room into the equipment; wherein the air released from within said equipment into the free space within the room is partly guided again directly into the equipment; wherein said cooling air is prepared by sucking the air within said room into said air conditioner; wherein the cooling air within the cooling passageway is guided into a plurality of equipments disposed on the floor; and wherein the flow rate of the cooling air introduced into each equipment through the floor is controlled in accordance with the temperature of the cooling air supplied from the air conditioner into the space below the floor, the difference in temperature between the air released from each equipment into the free space within the room and the cooling air introduced into each equipment through the floor, and the temperature, which is set in advance, within the free space of the room.