柔性平板热管的设计制作与传热性能研究

novel flexible flat heat pipe is designed and fabricated. Liquid crystal polymer(LCP) is used as the case material to achieve the flexibility of the heat pipe.Heat transfer passages are made on the evaporator and condenser sections by micro-machining to obtain a favorable heat transfer property. The heat transfer performance is measured and analysed when deionized(DI) water and acetone are used as the working fluid, separately. Experimental results reveal that, when the flexible flat heat pipe is laid in a horizontal position, the thermal resistance 1.02K/W is much smaller than that（4.6K/W） of a copper plate with the same thickness.The effective thermal conductivity of the heat pipe is up to 736W/m.K when the heating power is 10.3W and the value will increase as the tilt angle changes from 0℃ to 90℃.