An enhancement surface of heat transfer has been developed based on the field synergy principle. The characteristic of the turbulent heat transfer and flow was studied experimentally. Effects of the fin angle

the channel height

and the Reynolds number have been evaluated. The assessment under the constraint of the identical pump power consumption reveals that the in the fin angle range of β＝0－23.2° the enhancement ratio increases monotonically with b

but decreases with the Reynolds number. For a fixed fin angle

thick ducts show better feature of lower power consumption and higher heat transfer.