Cooling device for data center and cooling system for data center

A cooling system for data center, comprising a plurality of cooling devices, and each of the plurality of cooling devices comprising:

• a housing chamber configured for housing the data center;
• an air inlet plenum positioned at one side of the housing chamber and configured for inflowing of external natural wind;
• an air outlet plenum positioned at another side of the housing chamber;
• an air return plenum defining two opposite ends communicated with the air inlet plenum and the air outlet plenum respectively, and comprising a return air damper;
• a controller connected to the return air damper and adapted for controlling the opening and closing of the return air damper;
• and
• a cooling coil located in the air inlet plenum and connected to the controller, wherein, when a temperature of the natural wind is higher than or equal to a preset temperature, the controller controls the return air damper to close, the natural wind is cooled by the cooling coil to the preset temperature, and then the natural wind enters the housing chamber and drives heat generated by the data center dissipating from the air outlet plenum;
• wherein, when the temperature of the natural wind is lower than the preset temperature, a mixed air flow having the preset temperature is obtained by mixing the natural wind with a heated flow of air entered the air inlet plenum through the air return plenum from the housing chamber, and then the mixed air flow enters the housing chamber and drives heat generated by the data center dissipating from the air outlet plenum;
• and
• wherein the housing chamber comprises a chamber body and a roof covering the chamber body, the roof is sloped, a partition plate is obliquely positioned between the air outlet plenum and the housing chamber, the partition plate comprises at least one air outlet damper connected to the controller and configured for allowing airflow from the housing chamber inflows to the air outlet plenum, an inclined direction of the partition plate is opposite to an inclined direction of the roof, and a lower side of the partition plate leaves a gap to a upper side of the roof to form the air outlet plenum.