| 摘要 |
The present invention relates to a refrigeration system primarily using CO2 as refrigerant, which system comprises a receiver, where a liquid outlet is connected to expansion valves, which are connected to evaporators, which are connected to the suction side of the compressor, which receiver comprises a second gas outlet, which is connected to a second pressure reduction device. It is the object of the invention to reduce the energy consumption in CO2 cooling systems, a further object is to protect one ore more compressors against liquid CO2 in the compressor inlet by heating the suction gas. The second pressure reduction device is connected by tubing to a first heat ex- changing device, which first heat exchanging device is integrated in the receiver. Hereby can be achieved that gas that is evaporated in the top of a receiver can be used for cooling the liquid part of the same receiver. Because the gas is sent to a pressure reduction valve, the temperature is decreased in the gas, before the gas is sent into a heat exchanging device from which heat exchanging device the gas is sent to the suction side of the compressor. |
