Entrepreneur develops more efficient engine By Ed Taylor, Tribune Brian Hageman has devoted a good part of his life to building nuclear power plants. Now he is ready to commercialize a new type of engine that could drastically reduce the need for electricity — and save money in the process. Hageman is president and chief executive of Deluge, a Phoenix-based company that is preparing to bring its thermal hydraulic engine to the marketplace. Ten manufactured prototypes of the engine, which convert heat energy to mechanical energy without combustion, will be used to drive pumps at an old oil field on...