屈曲風路に実装された高発熱CPUモジュールの冷却特性(熱工学,内燃機関,動力など)

概要

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We have developed a method of cooling high-power-density CPU modules within a bending duct. The method uses a jet-duct system made of an air duct and axial fans. This system has slit orifices upstream from the CPU modules. Pressure drops in this system are calculated as four values: wringing loss in the chamber, friction loss in the duct, extrusion loss from the duct, and wringing loss in the slit orifice. These loss values agree with the experimentally measured losses to within an error of ±10%. The calculation showed that when the duct width is small, the wringing loss in the chamber account for the major part of the total loss. Experiments in a wind channed show that a CPU module can be cooled by a volumetric flow rate of more than 0.32m^3/min and a velocity in front of the CPU module of more than 2m/sec. These results show that the jet-duct system has good cooling performance and redundancy.
一般社団法人日本機械学会の論文
2002-04-25