Following is the claim for this invention: -

1 . In this invention we provide a cooling system for rack mounted electronic devices.

The cooling system includes a thermosiphon system that includes a condenser, an evaporator, a regulator coupled with the evaporator and a conduit between the evaporator and the condenser. The thermosiphon system is thermally coupled to the electronic device mounted on the rack such that heat generated by the device is transferred to the working fluid in the evaporator, vaporising the working fluid. The vaporised working fluid is then transferred to the condenser through the conduit, where it releases the transferred heat and condenses to liquid, available for further reuse by the evaporator to maintain a certain level of the working fluid. Also there is a regulator coupled with the evaporator to maintain a fixed level of the working fluid based on the power supply for the rack mounted electronic device to which the thermosiphon system is thermally coupled. The above novel technique by which we provide a cooling system for rack mounted electronic devices is the claim for this invention.