Experimental investigation of the heat transfer characterization of multiple microjet impingement cooler

Abstract

In this paper, a new type microjet with a return channel was designed and constructed from plastics using 3-Dimensional print techniques. The array of 12 microjets with diameter 3mm was tested using high pressure (17.3KPa-275.8 KPa) air as coolant for jet diameter Reynolds number from 1.5 × 103 -6.75 × 103. The effects of the design parameters such as standoff that is the distance of the nozzle exit to the heated surface were analyzed under different input power and Reynolds number. The pressure drop and COP of the cooler were explored under different conditions in the present study.