Abstract: The present invention relates to a device and method for operating a refrigeration cycle with the addition of noncondensable gas.

Abstract: A refrigeration plant comprising a compressor having an inlet and an outlet, a condenser connected to the outlet of the compressor, an evaporator connected to the condenser and to the inlet of the compressor, and a regulation valve provided between the condenser and the evaporator. According to a peculiar feature of the present invention, the solenoid valve has no metering orifice through which the refrigerant fluid could be expanded. The condenser furnishes a high pressure refrigerant fluid to the regulation valve, which is constituted by a solenoid valve having solenoid actuator that, when is activated (energized), moves a valve member in its open position while when said actuator is deactivated (de-energized) it allows the valve member to return in its closed position by means of a suitable return spring.