Abstract: The invention relates to a process and a device for process realizing to increase the efficiency of power stations by improvement of the efficiency of using the heat potentials for an electric power production by using of supercritical carbon dioxide as a working fluid and heat transfer medium as well as for the improvement of the ecological balance of power stations by minimization of the carbon dioxide emission and the total avoidance of NOx-emissions by using of pure oxygen for the burning process. Additionally the process allows the buffering of electric overcapacity energy producing mass storages for natural gas, pressed air and carbon dioxide and their effective using as well as in the continuous operation and for peak load supply of power stations.

Abstract: The invention relates to the using of low temperature heat for the production of electrical energy by using of supercritical carbon dioxide as working fluid. It included a process and a device for process realizing with higher efficiency in relation to other known processes and with a wide temperature working range. This is related to a wider adjustability which allows an optimal operation both in summer and in winter operation without technical or constructional changes. The process is realizable without damages to the environment and is realizable with low effort. The relative emission of carbon dioxide is reduced in relation to other processes. Low temperature heat from a given heat source (1) is taken off by carbon dioxide at high supercritical pressure as heat transfer and working fluid in the process. Then the heated fluid is expanding in an expansion machine (2), which is connected with a generator (3) for the production of electric power.