Patent
Air cycle air conditioner for heating and cooling
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TLDR
In this paper, a compact, exhasut gas driven air cycle air conditioning system including an expansion turbine, two compressors, two heat exchangers and an exhaust turbine which is preferably controlled by means of an exhaust gas bypass arrangement and supplies either hot or cold conditioning air to a load air space.Abstract:
A compact, air cycle air conditioning system including compressor, turbine, heat exchanger and high speed electric motor is thermostatically controlled to supply either hot or cold conditioned air to a load air space. In a second arrangement, compact, exhaust gas driven air cycle air conditioning system including a compressor, turbine, two heat exchangers and an exhaust turbine is controlled by means of an exhaust gas bypass arrangement and supplies either hot or cold conditioned air to a load air space. In a third arrangement compact, exhasut gas driven air cycle air conditioning system includes an expansion turbine, two compressors, two heat exchangers and an exhaust turbine which is preferably controlled by means of an exhaust gas bypass arrangement and supplies either hot or cold conditioning air to a load air space.read more
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References
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Patent
Air cycle refrigeration system
TL;DR: An air cycle refrigeration system for cooling and ventilating an aircraft cabin includes a circulation heat exchanger (145) for absorbing heat from air within the cabin, a sink heat exchange liquid circulates through both heat exchangers in a single loop (100).
Patent
Air conditioning system for aircraft
TL;DR: In this article, an open loop air cycle air conditioning system draws ambient air into a turbine for expansion and cooling, and the air passes through a heat exchanger where it withdraws heat from recirculated cabin air and is passed to a compressor which is operatively coupled to and driven by the turbine to partially recompress the air.
Patent
Combined air cycle heat pump and refrigeration system
TL;DR: In this paper, a plurality of valves are arranged so that in the refrigeration mode the refrigerant air operates in a closed dry air loop to avoid problems associated with moisture, and in the heat pump mode the valves are rearranged so that the air can operate open loop by using ambient air as the input to the cycle, and avoiding icing problems by rejecting the drier air, together with any ice present, back into the ambient.
Patent
Compressor-expander with volume compensation
TL;DR: A compressor-expander has a vaned rotor eccentrically mounted in a cylindrical chamber to define a series of compartments which vary in volume through volumetric stages which are maximum, convergent, minimum and divergent.