COOLING SYSTEM

A cooling system includes: a compressor; a condenser; an expansion valve; an evaporator; an internal heat exchanger having a first conduit in heat exchanging contact with a second conduit, the first conduit being part of a high pressure fluid line between the condenser and the expansion valve, the second conduit being part of a low pressure fluid line between the evaporator and the compressor; a bypass line connecting the high pressure fluid line with the low pressure fluid line and for injecting small amounts of liquid fluid from the high pressure fluid line into the low pressure fluid line; a valve arranged in the bypass line for opening and closing the bypass line; and a control device for monitoring a load point of the compressor and controlling the valve to an open position when the load point exceeds a threshold.