A method for forming a system. Rack containers include rack units stacked in a first direction. Each rack unit has wheels and includes at least one heat generating device configured to generate heat while in operation. The wheels are positioned on a supporting structure on the floor which enables adjacent rack containers to move closer to or further from each other. A cooling conduit is secured on a top surface of each rack container to allow a cooling fluid to flow through a flexible tube into each rack container via the cooling conduit that encapsulates the flexible tube. The cooling fluid is configured to be heated by absorbing heat from the at least one heat generating device. The exhaust conduit is secured on the top surface of each rack container to allow the heated cooling fluid to be exhausted from each rack container via the exhaust conduit.