An air cycle machine includes an air inlet connected to an air cycle compressor. Air downstream of the air cycle compressor is connected to be delivered across a first turbine. The air cycle compressor is driven by the first turbine through a shaft. Air downstream of the first turbine is connected to a second turbine. The second turbine is connected to deliver air downstream. The second turbine is connected with a second shaft to drive a fan rotor. The fan rotor delivers a source of air across a primary heat exchanger positioned between the inlet and the air cycle compressor. The air cycle compressor and the first turbine are formed of a metal. The second turbine and the fan rotor are formed of non-metallic materials.

An air cycle machine includes a compressor in fluid communication with a load cooling heat exchanger, a first valve and a first turbine connecting the compressor to the load cooling heat exchanger, and a second valve and a second turbine. The second valve and the second turbine connect the compressor to the load cooling heat exchanger and connected in parallel with the first valve and the first turbine between the compressor and the load cooling heat exchanger. Air cycle machine systems and methods of controlling air flow through air cycle machines are also described.

Disclosed is an air conditioner, including an air compressor intended to compress the air to cool, an air-liquid thermal exchanger designed to transfer heat from the compressed air to a liquid placed in a tank, an air-to-air thermal exchanger designed to further lower the temperature of the air to be cooled which, at this stage, is still kept in the compressed air state, a compressed air engine to provide an expansion of the compressed air, which naturally lowers its temperature and provides cooled air, and an envelope, with good thermal insulation properties and intended to contain all the constituent elements of the air conditioner; it will then not be necessary to provide for a hot air evacuation as on most air conditioners known in the state of the art.

A system and method for using cold atmospheric plasma to treat an air flow to inactivate viruses and sterilize the air flow. The system comprises a source of a carrier gas, a humidifier connected to said source of a carrier gas, a source of a feed gas, a plasma generator configured to plasmatize said carrier gas into a plasma; and a mixer having an interior chamber, an active electrode inside said interior chamber and connected to an electrical output of said plasma generator, an outer electrode connected to a ground and a dielectric barrier between said inner electrode and said outer electrode, wherein said mixer has a first fluid input port connected to said source of a carrier gas, a second fluid input connected to said source of a feed gas and a fluid output connected to a ventilation system.

A humidifier cools air in an air path that supplies the air to an internal space of a storage chamber such as a container or a warehouse, extracts water in a water extracting unit, stores the extracted water in a humidifying unit, and humidifies the internal space. The air path includes a main path that communicates with the internal space and a discharge path that discharges a part or all of water-extraction air to the outside of the target space, so that the humidifier can sufficiently humidify the internal space without receiving supply of water.

A humidifier cools air in an air path that supplies the air to an internal space of a storage chamber such as a container or a warehouse, extracts water in a water extracting unit, stores the extracted water in a humidifying unit, and humidifies the internal space. The air path includes a main path that communicates with the internal space and a discharge path that discharges a part or all of water-extraction air to the outside of the target space, so that the humidifier can sufficiently humidify the internal space without receiving supply of water.

A humidifier cools air in an air path that supplies the air to an internal space of a storage chamber such as a container or a warehouse, extracts water in a water extracting unit, stores the extracted water in a humidifying unit, and humidifies the internal space. The air path includes a main path that communicates with the internal space and a discharge path that discharges a part or all of water-extraction air to the outside of the target space, so that the humidifier can sufficiently humidify the internal space without receiving supply of water.

An air conditioning apparatus includes an air vacuum pump that sucks in air from a prescribed space to place the space under negative pressure, a first hot and cool air tank that contains the sucked air, first valves that adjust the flow rate of air supplied to or discharged from the first hot and cool air tank, a second hot and cool air tank that contains the sucked air while an air flow from the air vacuum pump to the first hot and cool air tank is restricted, second valves that adjust the flow rate of air supplied to or discharged from the second hot and cool air tank, and a heating and cooling device that manages the temperature of at least one of the first and second hot and cool air tanks to which an air flow from the air vacuum pump is restricted.

A refrigerated air conditioning unit partitioned into an inside plenum and an outside plenum and having a single refrigeration loop, a single evaporator, and a recirculated air stream, the unit also having a dynamic intelligent air management system (DIAMS) internal to the unit that is cooperatively configured and operable to continuously introduce preconditioned fresh air directly into the recirculated air stream whenever the unit is operating and to exercise control over a mixed air flow discharged from the unit into an identified space to achieve a desired air temperature and humidity within the identified space.

An air cycle machine includes an air inlet connected to an air cycle compressor. Air downstream of the air cycle compressor is connected to be delivered across a first turbine. The air cycle compressor is driven by the first turbine through a shaft. Air downstream of the first turbine is connected to a second turbine. The second turbine is connected to deliver air downstream. The second turbine is connected with a second shaft to drive a fan rotor. The fan rotor delivers a source of air across a primary heat exchanger positioned between the inlet and the air cycle compressor. The air cycle compressor and the first turbine are formed of a metal. The second turbine and the fan rotor are formed of non-metallic materials.