It looks like each blade has 4 modules with 2 processors each with up to 9 blades plus management and networking in each blade cabinet and 4 of those in each rack. Liquid cooling is only an option, so it could be possible to run it on air only. I couldn't find much on the cooling system other than it's self contained if you have one if the separate cooling cabinets. It does look like is an air to water radiator. You could pay run it off of a pool pump or something.