Abstract
In the present study, a micro bare-tube heat exchanger without conventional fins is propsed and evaluated for electronic equipment cooling application. A micro bare-tube heat exchanger composed of 0.5mm outer diameter copper tubes is manufactured and tested experimentally. The optimal dimensionless transverse and longitudinal tube pitches were around P_T=2.3 and P_L=1.3,respectively. It is shown that the resultant micro bare-tube heat exchanger can drastically reduce the core volume compared to that of the conventional plate fin and tube heat exchanger.
