Abstract: A refrigerant composition for an HVACR system that includes R1123 refrigerant, R32 refrigerant, and CF3I. The refrigerant composition having a capacity greater than 85% of a capacity of R410 or a capacity of R32. A method of making a refrigerant composition for a HVACR system is also disclosed. The method includes mixing an amount of R1123, an amount of R32, and an amount of CF3I. A method of retrofitting a refrigerant composition that results in the refrigerant composition is disclosed.

Abstract: A transport refrigeration system (TRS) includes a first heat transfer circuit including a first compressor, a condenser, a first expansion device, and a cascade heat exchanger. The first compressor, the condenser, the first expansion device, and the cascade heat exchanger are in fluid communication such that a first heat transfer fluid can flow therethrough. The TRS includes a second heat transfer circuit including a second compressor, the cascade heat exchanger, a second expansion device, and an evaporator. The second compressor, the cascade heat exchanger, the second expansion device, and the evaporator are in fluid communication such that a second heat transfer fluid can flow therethrough. The first heat transfer circuit and the second heat transfer circuit are arranged in thermal communication at the cascade heat exchanger such that the first heat transfer fluid and the second heat transfer fluid are in a heat exchange relationship at the cascade heat exchanger.

Abstract: A transport refrigeration system (TRS) includes a first heat transfer circuit including a first compressor, a condenser, a first expansion device, and a cascade heat exchanger. The first compressor, the condenser, the first expansion device, and the cascade heat exchanger are in fluid communication such that a first heat transfer fluid can flow therethrough. The TRS includes a second heat transfer circuit including a second compressor, the cascade heat exchanger, a second expansion device, and an evaporator. The second compressor, the cascade heat exchanger, the second expansion device, and the evaporator are in fluid communication such that a second heat transfer fluid can flow therethrough. The first heat transfer circuit and the second heat transfer circuit are arranged in thermal communication at the cascade heat exchanger such that the first heat transfer fluid and the second heat transfer fluid are in a heat exchange relationship at the cascade heat exchanger.

Abstract: Embodiments as disclosed herein are directed to a heat pump that employs at least two different refrigerants, each of which is optimized for either a cooling operation mode or a heating operation mode. The embodiments as disclosed herein can help increase the capacity and/or efficiency of a heat pump in both the cooling operation mode and the heating operation mode. In addition, the embodiments as disclosed herein may also eliminate the need for a ground source in a relatively low ambient temperature environment.

Abstract: A refrigeration system is disclosed. The system includes a compressor, a condenser, an expansion device, and an evaporator fluidly connected to form a refrigeration circuit. A refrigerant composition including an environmentally-suitable chiller refrigerant that has a 100 year direct global warming potential (GWP) of less than 150 is included. The refrigerant composition includes a mixture including R-1336mzz-(Z) and R-1130-(E), wherein an amount of R-1336mzz-(Z) in the mixture is in a range from at or about 69% by weight to at or about 81% by weight, and an amount of R-1130-(E) in the mixture is in a range from at or about 31% by weight to at or about 19% by weight.

Abstract: Methods of using refrigerant compositions and systems thereof are described. In particular, methods of using refrigerant compositions and systems thereof, include refrigerant compositions including a two component blend. One of the components is a refrigerant blend that, when first combined, is considered an azeotropic blend, azeotrope, near azeotropic, or the like. This component is one component of the two components of the resulting refrigerant composition, which is combined with a second component being another refrigerant.

Abstract: A refrigerant composition for an HVACR system that includes R1123 refrigerant, R32 refrigerant, and CF3I. The refrigerant composition having a capacity greater than 85% of a capacity of R410 or a capacity of R32. A method of making a refrigerant composition for a HVACR system is also disclosed. The method includes mixing an amount of R1123, an amount of R32, and an amount of CF3I. A method of retrofitting a refrigerant composition that results in the refrigerant composition is disclosed.

Abstract: A non-flammable refrigerant composition for a HVACR system that includes R134a refrigerant, a hydrofluorocarbon refrigerant that has a global warming potential (GWP) of less than 150 or a hydrofluoroolefin refrigerant, and CF3I. A method of making a refrigerant composition for a HVACR system that includes selecting an amount of a first refrigerant that is a hydrofluorocarbon refrigerant or a hydrofluoroolefin refrigerant, selecting an amount of CF3I, and selecting an amount of R134a refrigerant. A method of retrofitting a refrigerant composition in an HVACR system that includes adding one or more compounds to the refrigerant composition. The retrofitted composition including R134a refrigerant, a hydrofluorocarbon refrigerant having a GWP of less than 150, and CF3I, or R134a refrigerant, a hydrofluoroolefin refrigerant, and CF3I.

Abstract: Refrigerant compositions for an HVACR system that includes R1123, R32 and at least one more refrigerant. The refrigerant composition has a reduced GWP of about or less than 1500. Some of the refrigerant composition may be suitable for replacing R410A, R32, and/or R22. Methods for making the refrigerant composition including mixing an amount of R1123, and amount of R32, and an amount of at least one more refrigerant. Methods of retrofitting an existing refrigerant composition include adding an amount of at least one refrigerant to an existing refrigerant composition to produce a retrofitted refrigerant composition. The retrofitted refrigerant composition includes at least R1123 and R32.

Abstract: Refrigerant compositions are described, which can be used for example, in refrigeration, air conditioning, and/or heat pump systems which for example, can be incorporated into a heating, ventilation and air conditioning (HVAC) system or unit. The refrigerant composition includes an amount of a R125 refrigerant, an amount of a R32 refrigerant, and an amount of a R1234yf refrigerant, where the R32 refrigerant has higher flammability than the R125 refrigerant, and the R1234yf refrigerant has higher flammability than the R125 refrigerant.

Abstract: A refrigeration system is disclosed. The system includes a compressor, a condenser, an expansion device, and an evaporator fluidly connected to form a refrigeration circuit. A refrigerant composition including an environmentally-suitable chiller refrigerant that has a 100 year direct global warming potential (GWP) of less than 150 is included. The refrigerant composition includes a mixture including R-1336mzz-(Z) and R-1130-(E), wherein an amount of R-1336mzz-(Z) in the mixture is in a range from at or about 69% by weight to at or about 81% by weight, and an amount of R-1130-(E) in the mixture is in a range from at or about 31% by weight to at or about 19% by weight.

Abstract: The present disclosure provides a compressor system operable for compressing a working fluid such as air. A conditioner is positioned upstream of the compressor to reduce the humidity and may in certain forms control a temperature of the working fluid entering the compressor. An aftercooler and an oil cooler is positioned downstream of the compressor. A first heat exchange system may direct water from a source through the conditioner to the aftercooler and oil cooler. An oil heat exchange circuit directs oil from the compressor to the oil cooler and then to a regenerator prior to reentry into the compressor. A control system is operable for controlling portions of compressor system to provide inlet air to the compressor at a desired temperature and humidity.

Abstract: Compositions and methods are described for reducing flammability in a heating, ventilation, and air conditioning (HVAC) system having R32 refrigerant included in the refrigerant composition. Refrigerant compositions and methods of use are described which can be used for retrofitting, servicing, controlling flammability, improving performance, lubricant solubility and miscibility, and improving the safety of an HVAC system.

Abstract: Refrigerant compositions are described, which can be used for example, in refrigeration, air conditioning, and/or heat pump systems which for example, can be incorporated into a heating, ventilation and air conditioning (HVAC) system or unit. The refrigerant composition includes an amount of a R125 refrigerant, an amount of a R32 refrigerant, and an amount of a R1234yf refrigerant, where the R32 refrigerant has higher flammability than the R125 refrigerant, and the R1234yf refrigerant has higher flammability than the R125 refrigerant.

Abstract: Heat is recovered from a heat source to heat water to high temperatures. Apparatuses, systems and methods are described to heat water to a high temperature by using heat, such as may be considered in some instances as waste heat, recovered from a heat source. The methods, systems, and apparatuses described utilize low pressure refrigerant(s) as a fluid to provide a refrigeration cycle that utilizes a source of heat to heat water to a high temperature. The refrigeration cycle can be with or without a cascade cycle. The refrigerant cycle in some examples uses an oil free compressor.

Abstract: Methods of using refrigerant compositions and systems thereof are described. In particular, methods of using refrigerant compositions and systems thereof, include refrigerant compositions including a two component blend. One of the components is a refrigerant blend that, when first combined, is considered an azeotropic blend, azeotrope, near azeotropic, or the like. This component is one component of the two components of the resulting refrigerant composition, which is combined with a second component being another refrigerant.

Abstract: Refrigerant compositions are described. In particular, refrigerant compositions are described that include a two component blend, where one of the components is a refrigerant blend that, when first combined, is considered an azeotropic blend, azeotrope, near azeotropic, or the like. This component is one component of the two components of the resulting refrigerant composition, which is combined with a second component being another refrigerant.

Abstract: A system for detecting if a refrigerant in an HVACR system is contaminated. The system includes a detector that detectes a property of a refrigerant gas in a vapor space and compares the detected property with a reference property for uncontaminated refrigerant gas. The detector determines that a contaminant is present in the refrigerant gas if the detected property is different from the reference property. The property detected by the dectector can be either a speed of sound through the refrigerant gas or a thermal conductivity of the refrigerant gas. Also disclosed is a method for detecting contamination of refrigerant gas in a HVACR system that includes detecting, by a detector, a property of refrigerant gas in a vapor space of the HVACR system.

Abstract: The present disclosure provides a compressor system operable for compressing a working fluid such as air. A conditioner is positioned upstream of the compressor to reduce the humidity and in some embodiments may control a temperature of the working fluid entering the compressor. A working fluid aftercooler and a lubricant cooler is positioned downstream of the compressor. A first heat exchange system directs water from a source through the conditioner and then to the aftercooler and oil cooler in parallel. A second heat exchange system directs oil from the compressor to the oil cooler and then to a regenerator prior to reentry into the compressor. A control system with one or more control valves is configured to provide oil to the compressor at a target temperature defined to ensure that the temperature of the discharged compressor is above a pressure dew point temperature.

Abstract: The present disclosure provides a compressor system operable for compressing a working fluid such as air. A conditioner is positioned upstream of the compressor to reduce the humidity and may in certain forms control a temperature of the working fluid entering the compressor. An aftercooler and an oil cooler is positioned downstream of the compressor. A first heat exchange system may direct water from a source through the conditioner to the aftercooler and oil cooler. An oil heat exchange circuit directs oil from the compressor to the oil cooler and then to a regenerator prior to reentry into the compressor. A control system is operable for controlling portions of compressor system to provide inlet air to the compressor at a desired temperature and humidity.