invention selectable portions of the total carbon dioxide gas can be made available via valve 63 for use in generating electrical power and via valve 71 for producing refrigeration considering the power generation phase of our invention first it is assumed that valve 63 is open permitting a selected portion of the gas at the regeneration exit temperature and pressure to flow into superheater coil 64 super heater coil 64 adds heat supplied by burner 90 to provide additional energy to the carbon dioxide gas gas turbine 60 is operatively connected to drive electrical generator 66 the superheated carbon dioxide flowing through pipe 65 is allowed to expand in gas turbine 60 thereby driving turbine 60 and generator 66 the turbine exit temperature and pressure of the carbon dioxide may be typically 100 u00b0 to 300 u00b0 f and from near atmospheric pressure to 100 p s i a respectively carbon dioxide as a working fluid for driving a turbine has an advantage over steam in that it has a very low vaporization point therefore there is little danger of liquid droplets damaging the turbine blades the small amount of remaining water vapor with the carbon dioxide can be prevented from condensing in the turbine by proper selection of turbine outlet conditions the exhaust carbon dioxide from turbine 60 is conducted via control valve 19 and pipe 17 to gas conditioner 20 preparatory.