| 摘要 |
Closed cycle plant (1), particularly a Rankine cycle plant, for converting thermal power into mechanical and/or electric power, comprising: a closed circuit (2) inside which a working fluid circulates according to a predetermined circulation direction, a volumetric expander (4) configured to receive at the inlet the working fluid at the gaseous state. The volumetric expander (4) comprises: a jacket (5) having an inlet (8) and an outlet (9) respectively suitable for enabling to introduce and discharge the working fluid, an active element (6) housed in said jacket and suitable for defining, in cooperation with said jacket (5), a variable volume expansion chamber (7), a main shaft (11) associated to the active element (6) and configured to rotatively move around an axis, a valve (10) active on the inlet and outlet of the jacket (5), and configured to selectively open and close the inlet and outlet to enable at least one condition of introducing, one condition of expanding and one condition of discharging the working fluid from said expansion chamber (7), an electric or mechanical power generator (12) connected to the main shaft (11). The valve (10) comprises an regulation device (14) configured to enable to vary at least one of the following parameters: the duration of the introduction condition, the maximum through cross- section of the inlet (8). |
