Two Phase Cooling of Power Electronics Devices-2Two Phase Cooling of Power Electronic Devices - A novel approach to cooling power electronics which utilizes R134a refrigerant in an active Two Phase Cooling system. The system eliminates the superheating of the refrigerant and replaces the compressor with a low-pressure liquid circulation pump to conduct heat into the heat exchanger. This presentation will describe the system advantages and the energy transfer process in greater detail. View the presentation.