Abstract: A method for conditioning a fluid in a temperature-insulated test space and a test space of a test chamber for receiving test materials. A cascading cooling device creates a particular temperature range within the test space, and the cooling device has a first cooling circuit comprising a cascading heat exchanger, a first compressor, a condenser and a first expanding element, and a second cooling circuit comprising a heat exchanger, a second compressor, the cascading heat exchanger and a second expanding element. The cascading heat exchanger is cooled by the first cooling circuit, the heat exchanger is cooled by a bypass passing through the heat exchanger and bridging the cascading heat exchanger, the first compressor is turned off, and a first refrigerant is conducted and condensed in a gaseous state in the cascading heat exchanger on a low-pressure side of the bypass.

Abstract: A method for conditioning a fluid in a temperature-insulated test space and a test space of a test chamber for receiving test materials. A cascading cooling device creates a particular temperature range within the test space, and the cooling device has a first cooling circuit including a cascading heat exchanger, a first compressor, a condenser and a first expanding element, and a second cooling circuit including a heat exchanger, a second compressor, the cascading heat exchanger and a second expanding element The cascading heat exchanger is cooled by the first cooling circuit, the heat exchanger is cooled by a bypass passing through the heat exchanger and bridging the cascading heat exchanger, the first compressor is turned off, and a first refrigerant is conducted and condensed in a gaseous state in the cascading heat exchanger on a low-pressure side of the bypass.

Abstract: A method for conditioning a fluid in a temperature-insulated test space and a test space of a test chamber for receiving test materials are provided. A particular temperature range within the test space is provided by a cascading cooling device having a first cooling circuit a cascading heat exchanger, a first compressor, a condenser and a first expanding element, and a second cooling circuit, a heat exchanger, a second compressor, the cascading heat exchanger and a second expanding element, said cascading heat exchanger cooled by the first cooling circuit, said heat exchanger subsequently cooled by a bypass passing through the heat exchanger and bridging the cascading heat exchanger, said first compressor being turned off, a first refrigerant conducted and condensed in a gaseous state in the cascading heat exchanger on a low-pressure side of the bypass.