Cooling system

A cooling system, comprising:

• an air-cooling device, comprising:
• a first fan, arranged in a first cooling room and configured to blow a hot air inside a rack into a first cooling room;
• an evaporator, arranged in the first cooling room;
• a first condenser, arranged in a second cooling room;
• and
• a second fan, arranged in the second cooling room and configured to blow an outside air into the second cooling room;
• wherein, in response to the evaporator receiving the hot air through the first fan, the evaporator is configured to heat a refrigerant into a gaseous state and transmit the refrigerant to the first condenser through a first pipeline;
• in response to the first condenser receiving the outside air through the second fan, the first condenser is configured to condense the refrigerant into a liquid state and transmit the refrigerant to the evaporator through a second pipeline;
• and
• a water-cooling device, comprising:
• a radiator, arranged in the second cooling room and configured to receive a hot liquid from an electronic device in the rack through a third pipeline and transmit a cold liquid to the electronic device through a fourth pipeline;
• wherein, in response to the radiator receiving the outside air through the second fan, the radiator is configured to cool down the hot liquid to the cold liquid.