Cooling system for electronic equipment

A cooling system for an electronic device comprising:

• a device room in which a plurality of electronic devices are placed;
• an evaporator which is provided close to each of the electronic devices, and cools exhaust air from the electronic device by vaporizing a refrigerant with heat generating from the electronic device;
• a cooling tower which is provided at a place higher than the evaporator, cools the refrigerant by outside air and water sprinkling, and condenses the vaporized refrigerant;
• a circulation line in which the refrigerant naturally circulates between the evaporator and the cooling tower;
• a heat exchanger which cools the refrigerant;
• a series line which is a flow path for the refrigerant, connected to the circulation line, and is provided so that the heat exchanger has series relation with respect to the cooling tower, with the line being constituted so that the refrigerant returning from the evaporator reaches the heat exchanger after passing through the cooling tower;
• and
• a series control mechanism which controls cooling capacity of the heat exchanger.

A cooling system for an electronic device comprising:

• a device room in which a plurality of electronic devices are placed;
• an evaporator which is provided close to each of the electronic devices, and cools exhaust air from the electronic device by vaporizing a refrigerant with heat generating from the electronic device;
• a cooling tower which is provided at a place higher than the evaporator, cools the refrigerant by outside air and water sprinkling, and condenses the vaporized refrigerant;
• a circulation line in which the refrigerant naturally circulates between the evaporator and the cooling tower;
• an air-conditioning machine which cools high-temperature air taken in from the device room, and returns the air into the device room;
• and
• an air-conditioning circulation line which is branched from the circulation line, and circulates the refrigerant to and from a cooling part of the air-conditioning machine.