Simplification of liquid cooling for A-C turbine generators

The design of liquid-cooled turbine generators has been simplified by eliminating some complications first thought necessary and enumerated in an earlier paper.¹ The external deaerators and small ducts below the rotor´s main slots may not be omitted; the stator can be cooled with water instead of by an insulating liquid; and complications associated with hydrogen may be obviated in small and moderate size generators by operating in an air atmosphere.