纳米流体在铜丝丝网平板热管中的应用

Application of Water-Based Nano-Fluid in Copper Wire Flat Heat Pipe with Mesh Structure

以去离子水和水基铜纳米流体为工质,对一种铜丝丝网平板热管的传热特性进行了实验研究.分析了不同工作压力、不同工质和纳米流体质量分数对铜丝丝网平板热管传热性能的影响,并与单一铜丝平板热管的换热性能进行了比较.结果表明:纳米流体在低压条件下可以显著提高热管的换热特性,是一种适用于平板热管的新型工质;在使用水和纳米流体2种工质的实验中,铜丝丝网平板热管的各项换热功能指标均优于铜丝平板热管,并且热管热阻明显降低,最大功率也明显增加.

The heat transfer characteristics of a novel flat heat pipe, the copper wire bonded and mesh screen flat heat pipe ,were investigated experimentally. The effect of various working pressures, nano fluid concentration and working fluids which include deionized water and water-based copper nanofluids on copper wire-bonded and mesh screen flat heat pipe was analyzed. Besides, the performance was compared to that of copper wire-bonded flat heat pipe. The results show that nanofluid under low-pressure conditions can significantly improve the heat transfer characteristics of heat pipe and is a new working medium which can be applied to flat heat pipe. The overall thermal performances of new heat pipe are superior to those of copper wire bonded flat heat pipe, the thermal resistance reduces distinctly and the maximum power increases obviously.