Heat dissipation apparatus with coarse surface capable of intensifying heat transfer

Abstract

A heat dissipation apparatus with coarse surface capable of intensifying heat transfer comprises a base plate, a plurality of plate members, a flow passage, and a heat transfer reinforced unit; the plate members each extend upright from the base plate in parallel; the flow passage is formed between any two adjacent plate members; the heat transfer reinforced unit is provided at the first surface and/or the second surface and further comprises at least a raised part being disposed slightly upright from the respective surface and spacing apart a distance from each other, and a plurality of fish-scale-like parts each being disposed on the respective surface next to the respective raised part, providing a recess toward said surface with an inclining angle to the surface and having an edge such that a sharp end is formed by every two adjacent fish-scale-like parts and disposed at an intersection of the respective edge of the two adjacent fish-scale-like parts, wherein the raised part and the fish-scale-like parts allow fluid near the surface creating eddy flows and secondary flows and breaking boundary layers of the fluid.