Fluid Flow Characteristics in Micro-Pump with the Aid of Peltier Devices and Thermal Expansion Material  

作　　者：Shuichi Torii Yasuhiro Takakura 

机构地区：[1]Graduate School of Science and Technology, Kumamoto University, Kumamoto 860-8555, Japan

出　　处：《Journal of Energy and Power Engineering》2016年第2期93-101,共9页能源与动力工程（美国大卫英文）

摘　　要：Experimental study is performed to design and develop a cylindrical micro-pump driven by expansion and contraction of the heat deformation material, whose variation is caused with the aid of heating and cooling properties of Peltier devices. The pump consists of the diffuser valve unit, the heat deformation material unit, the nozzle valve unit, the Peltier devices and the cover. The input current of the Peltier devices is controlled by the bipolar power supply so that the Peltier devices are heated and cooled periodically. The working fluid flow in the micro-pump is caused by the periodical thermal deformation of material which is caused by the periodical heating and cooling of the Peltier devices. In order to measure the fluid flow in the micro-pump, micro air bubbles are employed as a tracer. The corresponding movement is recorded by X-ray apparatus and its velocity is measured by PIV （particle image velocimetry）. It is found that, the micro-pump developed here can make the working fluid flow. The corresponding fluid flow in the micro pump is confirmed by the numerical method.

关 键 词：Flow visualization MICROPUMP Peltier device X-ray. 

分 类 号：TH3[机械工程—机械制造及自动化] TN303[电子电信—物理电子学]