preferred embodiment the gas supply comprises a u201c squirrel cage u201d type blower a first duct 100 is coupled to the portion of the blower exhaust port which has the high velocity airflow exiting first duct 100 provides a passageway for the gas flow from the blower to the first heatsink 120 a second duct provides a passageway for gas flow from the first heatsink 120 to second heatsink 65 duct 100 includes a plurality of vanes 105 disposed therein the vanes 105 are designed to reduce the turbulence within the first duct 100 prevent or reduce air boundary separation within the duct and to maintain the velocity head pressure the vanes minimize the discontinuities in the airflow through the duct as a result a high pressure generally uniform stream of gas is provided by the first duct 100 to a first heatsink 120 the vanes are preferably solid pieces having a smooth finish in order to minimize turbulence transition vanes not shown may also be incorporated at the end of the duct 100 as shown in fig2 3 b duct 100 is coupled to gas mover 75 the gas velocity coming out of the gas mover 75 is non uniform across the output of the gas mover accordingly the duct 100 should be carefully matched to the fan to prevent large pressure drops from occurring the incorporation of vanes 60 within the duct 20 keep the gas flow attached thus the separation and turbulence are minimized as is the.