Patent ID: 6539723
Filing Date: 2003-04-01
Classification: F01K,F02C,F05D,Y02E

Abstract:
Apparatus for producing power comprising:a) an indirect contact heat exchanger for extracting heat from combustion products for producing cooled combustion products and a heated medium whereby a working fluid present in a working fluid vaporizer of an energy converter is heated with said cooled combustion products, said energy converter further comprising a turbine responsive to vaporized working fluid produced by said working fluid vaporizer that produces power and expanded working fluid, and a working fluid condenser responsive to said expanded working fluid that condenses the latter to working fluid condensate and returns said working fluid to said working fluid vaporizer; b) means for heating heat transfer fluid that flows in a dedicated heat transfer fluid closed loop; and c) a preheater for transferring heat from said heat transfer fluid flowing in said dedicated heat transfer fluid closed loop to working fluid contained in said energy converter by transferring the heat to working fluid condensate for preheating said working fluid condensate before it is supplied to said working fluid vaporizer.