[citation][nom]memadmax[/nom]The design looks wrong, one fan blowing its hot air onto another fan.It should be 2 fans blowing in opposite directions, drawing cold air down the middle...............[/citation]
Two fans in opposite directions would cause a low pressure between fans which will result in a small amount of hot exhaust air from the cooler to recycle back to the fan inlets. Push-pull configuration here prevents this from occurring and is the most efficient heat-exchange design for a single-pass system.