Abstract:
Disclosed herein are haloketone refrigerant or heat transfer fluid compositions that are useful in refrigeration or air conditioning apparatus or as heat transfer fluids. The compositions of the present invention are also useful in centrifugal compressor systems that employ two-stage compressors or single slab/single pass heat exchangers.
Abstract:
The present invention relates to dispersion compositions comprising synthetic oils or other heat transfer fluids and fine particles. The compositions also comprise at least one dispersant. The dispersion compositions have improved thermal conductivity properties, which may translate to improved energy efficiency performance in a variety of heat transfer applications. Such applications include vapor compression air conditioning and refrigeration systems of all types, secondary heat transfer fluids, and other heating or cooling fluid applications.
Abstract:
Disclosed are refrigerant compositions comprising the following components, as expressed in weight percent, and such that the total adds up to 100%, including any additives. 7.0-9.0 % wt. R32 [difluoromethane, CH2F2, having a normal boiling point of -51.7°C]; 39.0-50.0 % wt. R125 [pentafluoroethane, CF3CHF2, having a normal boiling point of -48.5°C]; 39.0 50.0 % wt R134a [1, 1, 1, 2 tetrafluoroethane, CF3CHF2, normal boiling point of -26.1 °C]; 1.9 to 2.5 % wt hydrocarbon, which consists essentially of 1.5 -1.8 % wt R600 [n-butane, CH3CH2CH2CH3, normal boiling point of -0.5°C], and 0.4 - 0.7 % wt R601a [isopentane, ((CH31)21CHCH2CH3, having normal boiling point of +27.8°C] or R601 [n-pentane (CH3CH2CH2 CH2CH3, having a normal boiling point of +36°C)]. Further disclosed are refrigerators, freezers, air conditioners, water chillers, and heat pumps using the compositions described herein as at least one of the heat transfer compositions in the equipment.
Abstract:
The present invention relates to fluoroolefin compositions. The fluoroolefin compositions of the present invention are useful as refrigerants or heat transfer fluids and in processes for producing cooling or heat. Additionally, the fluoroolefin compositions of the present invention may be used to replace currently used refrigerant or heat transfer fluid compositions that have higher global warming potential.
Abstract:
The present disclosure relates to compositions comprising at least one fluoroolefin and an effective amount of a stabilizer comprising at least one phosphorus-containing compound selected from the group consisting of thiophosphates, butylated triphenylphosphorothionates, and organophosphates. The stabilized compositions may be useful in cooling apparatus, such as refrigeration, air-conditioning, chillers and heat pumps, as well as in applications as foam blowing agents, solvents, aerosol propellants, fire extinguishants, and sterilants.
Abstract:
Disclosed herein are refrigerant and heat transfer fluid compositions comprising 1,1,1,2,2,4,5,5,5-nonafluoro-4-(trifluoromethyl)-3-pentanone and at least one hydrofluorocarbon for use in refrigeration and air conditioning systems employing a centrifugal compressor. The compositions may be azeotropic or near-azeotropic.
Abstract:
The present invention is related to refrigerant and lubricant compositions containing performance-enhancing additives. The performance enhancing additives are found to improve the energy efficiency and capacity of vapor compression refrigeration and air conditioning systems, which utilize hydrofluorocarbon refrigerants (e.g. HFC-134a) and oxygenated refrigeration lubricants (e.g. POEs, PAGs and PVEs).
Abstract:
The present invention provides methods for reducing the propagation of a flame to or from a refrigerant source and an ignition source in or adjacent to a cooling system, comprising positioning a metal mesh flame arrestor between said refrigerant source and said ignition source. The methods allow the use of flammable refrigerants with reduced risk of fire.
Abstract:
The present disclosure relates to compositions comprising at least one fluoroolefin and an effective amount of a stabilizer comprising at least one benzophenone derivative. The stabilized compositions may be useful in cooling apparatus, such as refrigeration, air-conditioning, chillers and heat pumps, as well as in applications as foam blowing agents, solvents, aerosol propellants, fire extinguishants, and sterilants.
Abstract:
Disclosed herein are refrigerant and heat transfer fluid compositions comprising 1,1,1,2,2,4,5,5,5-nonafluoro-4-(trifluoromethyl)-3-pentanone and at least one hydrocarbon. These compositions are useful in refrigeration and air conditioning systems that employ a centrifugal compressor. Also disclosed herein are azeotropic or near azeotropic refrigerant and heat transfer fluid compositions comprising 1,1,1,2,2,4,5,5,5-nonafluoro-4-(trifluoromethyl)-3-pentanone and at least one hydrocarbon.