Abstract: A refrigerant for a cooling device including a cooling circuit with at least one heat exchanger, the refrigerant undergoing a phase transition in the heat exchanger, the refrigerant being a refrigerant mixture composed of a mass fraction of carbon dioxide, a mass fraction of pentafluoroethane, a mass fraction of difluoromethane and a mass fraction of at least one other component, wherein the mass fraction of carbon dioxide in the refrigerant mixture is 28 to 51 mass percent, the mass fraction of pentafluoroethane being 14.5 to 32 mass percent, the mass fraction of difluoromethane being 14.5 to 38 mass percent, the other component being fluoromethane.

Abstract: A test chamber (10) for conditioning air has a test space (12), and a temperature control device (11) for controlling the temperature of the test space and allowing a temperature in a range of ?80° C. to +180° C., preferably ?100° C. to +200° C., to be established within the test space, the temperature control device having a cooling device (16) with a cooling circuit (17), a heat exchanger (18), a compressor (19), a condenser (20), and an expansion element (21), wherein the refrigerant is a nearly azeotropic and/or zeotropic refrigerant mixture of a mass percentage of carbon dioxide and a mass percentage of at least one of the components ethane, ethene, hexafluoroethane, pentafluoroethane, monofluoro-ethane, 1,1-difluoroethene, fluoromethane and/or propane and/or xenon, the refrigerant having a relative CO2 equivalent of <3000, preferably <500, in particular preferably <10, with respect to 20 years.

Abstract: The invention relates to a humidifier (10) for a test chamber, in particular a climate chamber or the like, as well as to a method for conditioning air of a test space of a test chamber, said humidifier comprising a container (11) having a container interior (12) for receiving a water bath (13), a heating device (15) of a temperature-control system (14) for controlling the temperature of the water bath, and a ventilation system (17) for generating air bubbles (18) in the water bath, a container opening (28) being formed in the container above the water bath in order to connect the container interior to a test space of a test chamber, said humidifier comprising a cooling device (16) of the temperature-control system.

Abstract: The invention relates to a climate testing device (15) and to a climate testing device kit for forming a climate testing device, in particular a corrosion testing device or the like, comprising a test-chamber module (16) having a test space which can be closed off from the surroundings and which serves to receive test specimens, a tank module (12) having a container for receiving a corrosive liquid, a control module (13) having a controller for carrying out a test cycle, and a housing assembly (17) for at least partially accommodating the test space, the container and the controller, wherein the climate testing device comprises a frame assembly, the frame assembly being composed of spaced-apart parallel frame carriers and frame profiles, the frame profiles interconnecting the frame carriers, the frame profiles and the frame carriers forming spatially separate module seats for the test space, the container and the controller.

Abstract: A test chamber for conditioning air has a temperature-insulated test space sealable against an environment for receiving test materials and a temperature control device for controlling the temperature of the test space, a temperature ranging from ?20° C. to +180° C. in temperature being able to be realized within the test space by means of the temperature control device, said temperature control device comprising a cooling device having a cooling cycle having a refrigerant, a heat transmitter, a compressor, a condenser and an expanding element, the cooling cycle comprising an internal heat transmitter, the internal heat transmitter being connected to a high-pressure side of the cooling cycle upstream of the expanding element and downstream of the condenser in a flow direction, said refrigerant being able to cooled by means of the internal heat transmitter which is coupled to an adjustable supplementary refrigeration of the cooling device.

Abstract: The invention relates to a climate testing device (15) and to a climate testing device kit for forming a climate testing device, in particular a corrosion testing device or the like, comprising a test-chamber module (16) having a test space which can be closed off from the surroundings and which serves to receive test specimens, a tank module (12) having a container for receiving a corrosive liquid, a control module (13) having a controller for carrying out a test cycle, and a housing assembly (17) for at least partially accommodating the test space, the container and the controller, wherein the climate testing device comprises a frame assembly, the frame assembly being composed of spaced-apart parallel frame carriers and frame profiles, the frame profiles interconnecting the frame carriers, the frame profiles and the frame carriers forming spatially separate module seats for the test space, the container and the controller.