In order to cool computer chip efficiently with the least noise,a single phase water-cooling radiator for computer chip driven by piezoelectric pump with two parallel-connection chambers is developed. The structure and work principle of this radiator is described. Material,processing method and design principles of whole radiator are also explained. Finite element analysis （FEA） software,ANSYS,is used to simulate the heat distribution in the radiator. Testing equipments for water-cooling radiator are also listed. By experimental tests,influences of flowrate inside the cooling system and fan on chip cooling are explicated. This water-cooling radiator is proved more efficient than current air-cooling radiator with comparison experiments. During cooling the heater which simulates the working of computer chip with different power,the water-cooling radiator needs shorter time to reach lower steady temperatures than current air-cooling radiator.
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