Investigation on the Cooling a Simultated Electronic component using multiple JET impingement

Abstract

An experimental investigation was carried out to study the effect of multiple jet impingement on a simulated electronic component using water and air as coolants. This component consists of an electrically heated test plate of size 2cmX2cm area. Heat flux is varied from 25 to 200W/cm2 was dissipated using 0.25 and 0.5mm diameter newlinejets placed in a 7X7 array with a jet spacing of 3mm. The difference in temperature between the fluid inlet and test surface is within 300C for water jets and within 700C for air jet experiments. Experiments were newlineconducted by changing the [i] heat flux, [ii] flow rate, [iii] distance between the test surface and jet exit and [iv] horizontal and vertical positioning of the jets. It was found that heat flux, jet diameter and newlineReynolds number are important factors in determining the heat transfer. The effects of distance between test surface and jet exit [Z], and positioning of the jets (Vertical/horizontal) were insignificant.