A modified two-phase refrigeration cycle compresses a working fluid, condenses the working fluid into a saturated or supercooled liquid, expands the saturated or supercooled liquid into a two-phase fluid, and evaporates the two-phase working fluid. The modified two-phase refrigeration cycle reduces irreversibilities imposed by conventional refrigeration cycles and extracts energy from the working fluid during the expansion process. For instance, a system that employs the modified two-phase refrigeration cycle includes a two-phase expander to reduce irreversibilities during an expansion process and extract energy. In some instances, the system includes a two-phase compressor to compress two-phase fluids for varying loads and environmental conditions of the system.

A modified two-phase refrigeration cycle compresses a working fluid, condenses the working fluid into a saturated or supercooled liquid, expands the saturated or supercooled liquid into a two-phase fluid, and evaporates the two-phase working fluid. The modified two-phase refrigeration cycle reduces irreversibilities imposed by conventional refrigeration cycles and extracts energy from the working fluid during the expansion process. For instance, a system that employs the modified two-phase refrigeration cycle includes a two-phase expander to reduce irreversibilities during an expansion process and extract energy. In some instances, the system includes a two-phase compressor to compress two-phase fluids for varying loads and environmental conditions of the system.

A thermal management system comprises a first heat exchanger configured to exchange heat between a first component and a first working fluid, a first working fluid compressor downstream in first working fluid flow of the first heat exchanger and configured to compress the first working fluid, a second heat exchanger downstream in first working fluid flow of the compressor and configured to exchange heat between the first working fluid and a second working fluid and an expander downstream in first working fluid flow of the second heat exchanger, and configured to expand and cool first working fluid and deliver cooled first working fluid to the first heat exchanger. The system further comprises a third heat exchanger upstream in second working fluid flow of the second heat exchanger, and configured to exchange heat between a second component and the second working fluid.

A thermal management system comprises a first heat exchanger configured to exchange heat between a first component and a first working fluid, a first working fluid compressor downstream in first working fluid flow of the first heat exchanger and configured to compress the first working fluid, a second heat exchanger downstream in first working fluid flow of the compressor and configured to exchange heat between the first working fluid and a second working fluid and an expander downstream in first working fluid flow of the second heat exchanger, and configured to expand and cool first working fluid and deliver cooled first working fluid to the first heat exchanger. The system further comprises a third heat exchanger upstream in second working fluid flow of the second heat exchanger, and configured to exchange heat between a second component and the second working fluid.

A compact energy cycle construction that utilizes a working fluid in its operation is disclosed having a compact housing of a generally cylindrical form, an orbiting scroll type expander, a central shaft which is driven by the expander, a generator having a rotor and a stator with the central shaft being mounted to the rotor for rotating the rotor relative to the stator, a pump mounted to the central shaft, an evaporator positioned between the expander and the generator and surrounding the central shaft, and the orbiting scroll type expander, the central shaft, the generator, the pump, and the evaporator being housed within the compact housing to form an integrated system operable in accordance with an energy cycle.

A compact energy cycle construction that utilizes a working fluid in its operation is disclosed having a compact housing of a generally cylindrical form, an orbiting scroll type expander, a central shaft which is driven by the expander, a generator having a rotor and a stator with the central shaft being mounted to the rotor for rotating the rotor relative to the stator, a pump mounted to the central shaft, an evaporator positioned between the expander and the generator and surrounding the central shaft, and the orbiting scroll type expander, the central shaft, the generator, the pump, and the evaporator being housed within the compact housing to form an integrated system operable in accordance with an energy cycle.

Refrigeration cycle ejector power generator makes use of refrigerant in a refrigeration cycle to feed an ejector or injector within the refrigeration cycle causing the ejector to fire refrigerant at extremely high pressures and velocities into a turbine fan or blade that is sealed inside the refrigeration system and is connected to a generator in order to generate electricity. Refrigeration cycle ejector power generator comprises: a condenser, an expansion valve, an evaporator, a compressor, an ejector valve, a first ejector, a turbine, and a controller or computer. Refrigeration cycle ejector power generator is a refrigeration cycle with at least one ejector positioned in the refrigeration cycle that emits refrigerant at a high pressure and high velocity that is directed at a turbine, causing it to rotate, where this rotational energy may be used to turn a generator, thereby generating electricity.

A new combined thermodynamic system (101) uses waste heat from an exhaust combustion gas of a prime mover (162) to produce mechanical power that operates a refrigeration circuit (105). The refrigeration circuit can cool air ingested by the prime mover to improve its power rate and/or efficiency. The system comprises a power generation circuit (103) adapted to circulate a first flow of a working fluid and produce mechanical power therewith. The combined thermodynamic system (1) further comprises a refrigeration circuit (105) comprising a refrigerant compressor (117) driven by mechanical power generated by the power generation circuit (103) and adapted to circulate a second flow of said working fluid in the refrigeration circuit (105).

A new combined thermodynamic system (101) uses waste heat from an exhaust combustion gas of a prime mover (162) to produce mechanical power that operates a refrigeration circuit (105). The refrigeration circuit can cool air ingested by the prime mover to improve its power rate and/or efficiency. The system comprises a power generation circuit (103) adapted to circulate a first flow of a working fluid and produce mechanical power therewith. The combined thermodynamic system (1) further comprises a refrigeration circuit (105) comprising a refrigerant compressor (117) driven by mechanical power generated by the power generation circuit (103) and adapted to circulate a second flow of said working fluid in the refrigeration circuit (105).

Refrigeration cycle ejector power generator makes use of refrigerant in a refrigeration cycle to feed an ejector or injector within the refrigeration cycle causing the ejector to fire refrigerant at extremely high pressures and velocities into a turbine fan or blade that is sealed inside the refrigeration system and is connected to a generator in order to generate electricity. Refrigeration cycle ejector power generator comprises: a condenser, an expansion valve, an evaporator, a compressor, an ejector valve, a first ejector, a turbine, and a controller or computer. Refrigeration cycle ejector power generator is a refrigeration cycle with at least one ejector positioned in the refrigeration cycle that emits refrigerant at a high pressure and high velocity that is directed at a turbine, causing it to rotate, where this rotational energy may be used to turn a generator, thereby generating electricity.