Ruikang Wu
State Key Laboratory of Coal Combustion and Thermal Packaging Laboratory, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
Wei Lan
Huazhong University of Science and Technology, 1037 Luo Yu Rd. Hongshan District, Wuhan 430074, China
Bin Xie
School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China; Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen 518055, China
Xingjian Yu
State Key Laboratory of Coal Combustion and Thermal Packaging Laboratory, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
Bofeng Shang
State Key Laboratory of Coal Combustion and Thermal Packaging Laboratory, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
Jie Sun
State Key Laboratory of Coal Combustion and Thermal Packaging Laboratory, School of Energy and Power Engineering Huazhong University of Science and Technology Wuhan 430074, China
Run Hu
State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
Xiaobing Luo
State Key Laboratory of Coal Combustion and Thermal Packaging Laboratory, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
Active liquid cooling system is urgently required for heat dissipation of high-power electronics. However, the key
part of the system, micro-pump, is still challenged by the bearing wear failure caused by mechanical friction. To solve this problem, we proposed a centrifugal micro-pump with the hydro-dynamically levitated bearing to make the rotor suspended without any mechanical friction. It is able to provide a 1.0 L/min flow rate and a 45 kPa pressure head at 20000 rpm, with an oversize of 23mm×23mm×25mm (length×width×height). Experiments were
conducted to test both the axial and radial suspension performance of the rotor. The results showed that the rotor
surrounded by working fluid is able to be stablely suspended under various working conditions. Therefore the reliability and lifetime of the micro-pump are heavily improved.