Cooling system employable in data center

A cooling system employable in a data center, the cooling system comprising:

• a first refrigeration medium;
• a first evaporator;
• a first condenser;
• and
• an all-condition cooling tower, wherein:
• the first evaporator is installed in a to-be-cooled space, the first evaporator is connected to the first condenser, an installation position of the first condenser is higher than an installation position of the first evaporator, the first refrigeration medium in the first evaporator absorbs heat from the to-be-cooled space and is vaporized into the first refrigeration medium in a gaseous state, the first refrigeration medium in the gaseous state rises to the first condenser and is cooled by the first condenser to be liquefied into the first refrigeration medium in a liquid state, the first refrigeration medium in the liquid state returns to the first evaporator;
• and
• the first condenser is connected to the all-condition cooling tower, the all-condition cooling tower is disposed outside the to-be-cooled space, and the all-condition cooling tower is used for providing the first condenser with a cold source cooling the first refrigeration medium in the gaseous state.