Experimental investigation of new structure microchannel heat sinks with laminar flow heat transfer

In this chapter, a new microchannel heat sink with staggered structure was designed based on thermal boundary layer technology for enhancing heat transfer performance and reducing flow resistance. Comparative experiments were carried out between a test section having the new staggered structure microchannel and a conventional straight microchannel keeping the values of three control parameters, inlet temperature, heating power, and flow rate, very close. The results indicated that there was an obvious difference between the friction resistance factor from experimental data and calculated values from theoretical formula. The staggered structure increased the partial friction resistance to a certain extent, but the advantage for heat transfer was more evident. The temperature distribution of the wall was more uniform along the flow direction.