Abstract: Disclosed is a transportation refrigeration system including a transportation refrigeration unit configured to maintain a temperature in a refrigerated cargo space and comprising a refrigerant expansion device, a refrigerant heat absorption heat exchanger, a refrigerant compression device, and a refrigerant heat rejection heat exchanger; and a refrigeration augmentation unit comprising a water tank having an outlet, and a water droplet generator in fluid communication with a water tank outlet and configured to disperse water droplets into an air stream flowing to the refrigerant heat rejection heat exchanger. Also disclosed are methods of using the transportation refrigeration system.

Abstract: A method for forming an ultra-high temperature (UHT) composite structure includes dispensing a first polymeric precursor with a spinneret; forming a first plurality of nanofibers from the first polymeric precursor; depositing the first plurality of nanofibers with a collector; and applying a fluid, with a nozzle, onto the first plurality of nanofibers disposed on the collector. The fluid includes a second polymeric precursor.

Abstract: A refrigeration system includes a trailer refrigeration unit including a refrigerant circuit through which a refrigerant is circulated. The trailer refrigeration unit includes a condenser. A fuel cell is configured to generate electrical power for the trailer refrigeration unit. A coolant circuit includes a radiator configured to dissipate heat generated by the fuel cell. The condenser and the radiator are positioned such that each of the condenser and the radiator receives a flow of unconditioned ambient air.

Abstract: A method for forming an ultra-high temperature (UHT) composite structure includes dispensing a first polymeric precursor with a spinneret; forming a first plurality of nanofibers from the first polymeric precursor; depositing the first plurality of nanofibers with a collector; and applying a fluid, with a nozzle, onto the first plurality of nanofibers disposed on the collector. The fluid includes a second polymeric precursor.

Abstract: An additive processing method includes providing a cover gas in a chamber in connection with additive fabrication of an article in the chamber, the cover gas entraining impurities during the additive fabrication, circulating the cover gas with entrained impurities from the chamber into a gas recirculation loop, removing the entrained impurities from the cover gas in the gas recirculation loop to generate a clean cover gas, circulating the clean cover gas into the chamber during the additive fabrication, and metering an amount of new cover gas provided into the chamber from a cover gas source connected to the chamber, the amount being metered with respect to an amount of the clean cover gas circulated into the chamber from the gas recirculation loop.

Abstract: A method for forming an ultra-high temperature (UHT) composite structure includes dispensing a polymeric precursor with a spinneret biased at a first DC voltage; forming a plurality of nanofibers from the polymeric precursor; receiving the plurality of nanofibers with a collector biased at a second DC voltage different than the first DC voltage; and changing a direction of movement of the plurality of nanofibers between the spinneret and the collector with a plurality of magnets having a magnetic field by adjusting the magnetic field.

Abstract: A method for forming an ultra-high temperature (UHT) composite structure includes dispensing a first polymeric precursor with a spinneret; forming a first plurality of nanofibers from the first polymeric precursor; depositing the first plurality of nanofibers with a collector; and applying a fluid, with a nozzle, onto the first plurality of nanofibers disposed on the collector. The fluid includes a second polymeric precursor.

Abstract: A method for forming an ultra-high temperature (UHT) composite structure includes dispensing a polymeric precursor with a spinneret biased at a first DC voltage; forming a plurality of nanofibers from the polymeric precursor; receiving the plurality of nanofibers with a collector biased at a second DC voltage different than the first DC voltage; and changing a direction of movement of the plurality of nanofibers between the spinneret and the collector with a plurality of magnets having a magnetic field by adjusting the magnetic field.

Abstract: An additive processing method includes providing a cover gas in a chamber in connection with additive fabrication of an article in the chamber, the cover gas entraining impurities during the additive fabrication, circulating the cover gas with entrained impurities from the chamber into a gas recirculation loop, removing the entrained impurities from the cover gas in the gas recirculation loop to generate a clean cover gas, circulating the clean cover gas into the chamber during the additive fabrication, and metering an amount of new cover gas provided into the chamber from a cover gas source connected to the chamber, the amount being metered with respect to an amount of the clean cover gas circulated into the chamber from the gas recirculation loop.

Abstract: An additive processing apparatus includes a chamber and an irradiation device that together are operable to additively fabricate an article from a powder layer-by-layer in a work space in the chamber. A gas recirculation loop is connected at a first end thereof to an outlet of the chamber and at a second end thereof to an inlet of the chamber. The gas recirculation loop includes at least one purification device that is configured to remove impurities from a cover gas and generate a clean cover gas.

Abstract: In one aspect, a refrigeration system is provided. The refrigeration system includes a refrigeration circuit configured to condition an air supply, a subcooling circuit configured to cool the refrigeration circuit, the subcooling circuit including a subcooling condenser, a subcooling heat exchanger, and at least one adsorption bed, and a heat generation system thermally coupled to the subcooling circuit.

Abstract: In one aspect, a heat exchanger layer for an adsorption bed heat exchanger assembly is provided. The heat exchanger layer includes at least one fluid tube configured to supply a heat transfer fluid, a sorbent containment structure having a plurality of compartments, and a sorbent disposed within the plurality of compartments.

Abstract: In one aspect, a refrigeration system is provided. The refrigeration system includes a refrigeration circuit configured to condition an air supply, a subcooling circuit configured to cool the refrigeration circuit, the subcooling circuit including a subcooling condenser, a subcooling heat exchanger, and at least one adsorption bed, and a heat generation system thermally coupled to the subcooling circuit.

Abstract: Systems, methods, and apparatus for the use of an emergency dye for search, rescue, and recovery is disclosed. In various embodiments, an emergency dye may comprise a high-visibility dye configured to reflect light in a visible light spectrum. The emergency dye may be configured to be disposed of on an aircraft. The emergency dye may be configured to be disposed of within an emergency dye package. The emergency dye may also be configured to be disposed of within an aircraft's hydraulic system. The emergency dye may be configured to be released from the aircraft, based on monitoring an aircraft's avionics system for an imminent crash alert.

Abstract: An additive processing apparatus includes a chamber and an irradiation device that together are operable to additively fabricate an article from a powder layer-by-layer in a work space in the chamber. A gas recirculation loop is connected at a first end thereof to an outlet of the chamber and at a second end thereof to an inlet of the chamber. The gas recirculation loop includes at least one purification device that is configured to remove impurities from a cover gas and generate a clean cover gas.

Abstract: In one aspect, a heat exchanger layer for an adsorption bed heat exchanger assembly is provided. The heat exchanger layer includes at least one fluid tube configured to supply a heat transfer fluid, a sorbent containment structure having a plurality of compartments, and a sorbent disposed within the plurality of compartments.

Abstract: A contactor configured for use in a dehumidification system is provided including a plurality of contact modules. Each contact module has a porous sidewall that defines an internal space through which a hygroscopic material flows. Adjacent contact modules are fluidly coupled to form a multipass flow path for the hygroscopic material through the contactor.

Abstract: A chemical reactor comprises a flow channel, a source, and a destination. The flow channel is configured to house at least one catalytic reaction converting at least a portion of a first nanofluid entering the channel into a second nanofluid exiting the channel. The flow channel includes at least one turbulating flow channel element disposed axially along at least a portion of the flow channel. A plurality of catalytic nanoparticles is dispersed in the first nanofluid and configured to catalytically react the at least one first chemical reactant into the at least one second chemical reaction product in the flow channel.

Abstract: A contactor configured for use in a dehumidification system is provided including a plurality of contact modules. Each contact module has a porous sidewall that defines an internal space through which a hygroscopic material flows. Adjacent contact modules are fluidly coupled to form a multipass flow path for the hygroscopic material through the contactor.

Abstract: A chemical reactor comprises a flow channel, a source, and a destination. The flow channel is configured to house at least one catalytic reaction converting at least a portion of a first nanofluid entering the channel into a second nanofluid exiting the channel. The flow channel includes at least one turbulating flow channel element disposed axially along at least a portion of the flow channel. A plurality of catalytic nanoparticles is dispersed in the first nanofluid and configured to catalytically react the at least one first chemical reactant into the at least one second chemical reaction product in the flow channel.