A cooling system, comprising a receiver tank, an evaporator, a compressor and a gas cooler, wherein - the receiver tank comprises a fluid inlet, a liquid outlet and a gas outlet; - the evaporator comprises an evaporator inlet and an evaporator outlet, - the compressor comprises a compressor inlet and a compressor outlet; - the gas cooler comprises a cooler inlet and a cooler outlet; and the liquid outlet of the receiver tank is connected to the evaporator inlet via a first conduit, the evaporator outlet is connected to the compressor inlet via a second conduit, the compressor outlet is connected to the cooler inlet via a third conduit, and the cooler outlet is connected to the fluid inlet of the receiver via a fourth conduit, wherein at least one of the first conduit and the fourth conduit comprises a pressure regulator (19,25), and the gas outlet of the receiver tank is connected to the evaporator inlet via a fifth conduit and a gas flow regulator (21,22), such that a flow of liquid refrigerant in the first conduit may be controlled by operating the gas flow regulator (21,22) during use, characterised by further comprising: a first temperature sensor arranged in the second conduit; a control system configured to obtain a differential temperature curve relative to the boiling temperature of the liquid refrigerant within the evaporator based on the temperature measured by the first temperature sensor; and to control the gas flow regulator (21,22) in order to increase or reduce a flow of gaseous refrigerant in the fifth conduit depending on whether the differential temperature curve shows a falling or rising differential temperature, respectively. - the receiver tank comprises a fluid inlet, a liquid outlet and a gas outlet; - the evaporator comprises an evaporator inlet and an evaporator outlet, - the compressor comprises a compressor inlet and a compressor outlet; - the gas cooler comprises a cooler inlet and a cooler outlet; and the liquid outlet of the receiver tank is connected to the evaporator inlet via a first conduit, the evaporator outlet is connected to the compressor inlet via a second conduit, the compressor outlet is connected to the cooler inlet via a third conduit, and the cooler outlet is connected to the fluid inlet of the receiver via a fourth conduit, wherein at least one of the first conduit and the fourth conduit comprises a pressure regulator (19,25), and the gas outlet of the receiver tank is connected to the evaporator inlet via a fifth conduit and a gas flow regulator (21,22), such that a flow of liquid refrigerant in the first conduit may be controlled by operating the gas flow regulator (21,22) during use, characterised by further comprising: a first temperature sensor arranged in the second conduit; a control system configured to obtain a differential temperature curve relative to the boiling temperature of the liquid refrigerant within the evaporator based on the temperature measured by the first temperature sensor; and to control the gas flow regulator (21,22) in order to increase or reduce a flow of gaseous refrigerant in the fifth conduit depending on whether the differential temperature curve shows a falling or rising differential temperature, respectively.