Abstract: A dry-type cooling system for condensing steam in a steam operated electric power generating plant and disposing of the heat withdrawn, by converting some of the heat to a form of power or work, such as electric power, and rejecting some of the heat to the air. The system requires a power input at relatively high ambient air temperatures, but such power consumption is offset by power produced during cooling with ambient air at lower temperatures.The cooling system utilizes a closed loop containing a suitable refrigerant fluid. The loop contains a steam condenser in the hot-well of a steam system of an electric generating plant, and a heat exchanger in a cooling tower through which air enters at atmospheric temperature and exits at an elevated temperature. The closed loop is branched to incorporate two consecutively operable cooling cycles employing the same refrigerant fluid.