Patent ID: 6629413
Filing Date: 2003-10-07
Classification: F02C,F03G,Y02B,Y02E

Abstract:
A thermodynamic apparatus comprising a compressor, an expander and heat exchange means connecting the compressor and the expander in a closed cycle, and a compressible working fluid arranged to flow in the closed cycle; the heat exchange means including a first heat exchange member and a second heat exchange member, both of which being connected between the compressor and the expander, the first member being arranged downstream to the compressor, and the second member downstream to the expander; heat recovery means having a heat transfer medium arranged to recover heat by transferring at least certain amount of the heat to and/or from the working fluid, the heat recovery means being configured so that the temperature of the working fluid is within a first predetermined range of temperatures when entering the compressor and/or within a second predetermined range of temperatures when entering the expander; and heat storage means arranged for storing said transferred heat for controllably releasing said stored heat to the working fluid, the heat storage means thereby serving to substantially control temperature of the working fluid and to substantially even out varying temperatures caused by fuel supplies of varying calorific value and quantity, and the heat transfer medium being arranged to transfer heat to said first member and to receive heat from the first member so that the temperature of the working fluid at the second member is reduced to within the first range of temperatures, and the heat transfer medium is arranged to be heated in a combustion chamber so that at the second member it can transfer heat to the working fluid to increase the temperature of the working fluid to within the second range of temperatures.