Patent ID: 8056356

Claim:
A refrigerating plant, comprising: a refrigerant circuit, in which an overall mass flow of a refrigerant is circulated, a high-side refrigerant-cooling heat exchanger, which is disposed in the refrigerant circuit, an expansion cooling device, which is disposed in the refrigerant circuit and in an active state cools the overall mass flow of the refrigerant and thereby produces a main mass flow of liquid refrigerant and an additional mass flow of gaseous refrigerant, a reservoir for the main mass flow, at least one normal cooling stage, which removes a normal cooling mass flow from the reservoir and has a normal cooling expansion element and a low-side normal cooling heat exchanger, provided downstream of said expansion element and providing refrigerating capacity for the normal cooling, an intense cooling stage, which removes an overall intense cooling mass flow from the reservoir and has an intense cooling expansion element and a downstream intense cooling heat exchanger providing refrigerating capacity for the intense cooling, and also with an intense cooling compressor unit downstream of the intense cooling heat exchanger, and at least one refrigerant compressor unit, which is disposed in the refrigerant circuit and compresses the refrigerant of the main mass flow and of the additional mass flow to high pressure, the intense cooling stage having an intense cooling expansion device for further cooling of the overall intense cooling mass flow, wherein the intense cooling expansion device in the active state cools the overall intense cooling mass flow and thereby produces a main intense cooling mass flow, which is fed to the intense cooling expansion element, and an additional intense cooling mass flow.