초록 ▼

The invention relates to regenerative working and thermal processes, the drive energy of which is supplied by external combustion of the fuel. The heat supply for this, almost always assumed to be isothermic, is achieved only in exceptional cases, since the flue gases usually have a low specific the

The invention relates to regenerative working and thermal processes, the drive energy of which is supplied by external combustion of the fuel. The heat supply for this, almost always assumed to be isothermic, is achieved only in exceptional cases, since the flue gases usually have a low specific thermal capacity. The invention explains new types of processes in order to obtain the optimum thermodynamic efficiency even for these less efficient heating cases. The heating heat exchangers and thermal regenerators used in regenerative processes are replaced by regenerative heat exchangers, which comprise a plurality of short regenerators, which are connected by tubular heat exchangers for the heating medium. It is thereby possible to supply the heat to the process not at a fixed but at a sliding temperature. In the same way, regenerative coolers are used for the dissipation of heat from Stirling engines and regenerative heat pumps or refrigeration machines, if, for example, only air is available as heat transfer medium.

대표청구항 ▼

1. A method for entropy transfer via at least one open periodic thermodynamic cyclic process using at least one working volume filled with a working fluid and at least one central partial volume in the working volume, which is located between at least two isothermal sectional areas, the method compr

1. A method for entropy transfer via at least one open periodic thermodynamic cyclic process using at least one working volume filled with a working fluid and at least one central partial volume in the working volume, which is located between at least two isothermal sectional areas, the method comprising:periodically modifying the at least one central partial volume in size, wherein a flow of working fluid through the at least one central partial volume takes place from one isothermal sectional area to the other one, wherein an exchange of working fluid takes place at different pressure levels and at different time periods from at least one of 1) the working volume to at least one volume having a largely constant pressure and 2) at least one volume having a largely constant pressure into the working volume, wherein a modification of the working fluid temperature averaged through the working volume is concurrently brought about by the periodic modification of size of the at least one central partial volume, wherein the at least one central partial volume is modified in size during the exchange of working fluid at a largely constant pressure, wherein the size of the at least one central partial volume, or the ratio of its size relative to that of the working volume, is largely kept constant when the pressure in the working volume is modified without exchange of working fluid, wherein heat is input or output in the range of the at least two isothermal sectional areas, wherein one respective further partial volume borders on each of the flow section isothermal areas delimiting the at least one central partial volume, the working fluid in the partial volumes presents different temperatures, and the sizes of the partial volumes are modified periodically, and wherein, during a time interval much longer in comparison with the duration of one period of the cyclic process, either intake of heat energy to or discharge of heat energy from the working fluid in the working volume takes place with the aid of at least one substance of at least one continuously or periodically increasing and decreasing mass flow at a sliding temperature or at several temperature levels.