Converting Energy Of Expansion To Mechanical Movement Patents (Class 62/87)
  • Patent number: 10309259
    Abstract: A CO2 power generation system includes a furnace to burn fuel, a turbine operated by a working fluid supplied thereto, the working fluid being heated by heat generated in the furnace, a recuperator exchanging heat with the working fluid passing through the turbine, a cooler to cool the working fluid passing through the recuperator, and a compressor to compress the working fluid passing through the cooler, wherein the working fluid passing through the compressor is circulated to the furnace, and the working fluid is supercritical CO2.
    Type: Grant
    Filed: November 10, 2016
    Date of Patent: June 4, 2019
    Assignee: Doosan Heavy Industries Construction Co., Ltd
    Inventors: Jeong Ho Hwang, Seung Gyu Kang, Eung Chan Lee
  • Patent number: 9857104
    Abstract: An air-cycle machine (ACM) air conditioning system and method, uses a turbocharger to cool cabin air through expansion. The ACM utilizes an unused, excess, compressed air output from another compressor. A compressor provides compressed air to the intake of an internal combustion engine. The unused, excess, compressed air output from another compressor is diverted to and compressed in an ACM compressor. The output of the ACM compressor is cooled in a heat exchanger and then input to an ACM turbine. The ACM turbine expands the output of the heat exchanger to produce expanded, cooled, cabin air. At least a portion of the expanded, cooled, cabin air can be used to cool an intake charge for the internal combustion engine and/or to cool a passenger cabin and/or other enclosed, refrigerated space.
    Type: Grant
    Filed: February 2, 2016
    Date of Patent: January 2, 2018
    Assignee: CAL POLY CORPORATION
    Inventors: Patrick J. E. Lemieux, Cyrille Dennis Moore, Christopher J. Forster
  • Patent number: 9476609
    Abstract: A water separator and system includes a compressed air aftercooler and water/moisture separator with a demister core comprising a plurality of offset fins. In one embodiment, the compressed air aftercooler comprises a compressed air core having an aftercooler inlet, an aftercooler outlet at the bottom of the compressed air core, and one or more heat transfer passages. In one aspect, the system comprises a moisture separator substantially integral to the aftercooler. In another aspect, the system includes a first generally horizontal region beneath and adjacent to the aftercooler outlet; and an expansion zone adjacent to and in fluid communication with the first region, the expansion zone being configured to reduce the horizontal velocity of compressed air passing therethrough. In another aspect, the demister core is in fluid communication with the expansion zone.
    Type: Grant
    Filed: December 7, 2009
    Date of Patent: October 25, 2016
    Assignee: API Heat Transfer Inc.
    Inventors: Timothy J Galus, John Stromecki, Timothy Beechler
  • Patent number: 9243498
    Abstract: Gas Pressure Reduction Generator (GPRG) systems and methods for implementing a GPRG system are provided, where the GPRG systems comprise a gas inlet configured to receive a pressurized gas flow, at least one expander in gas flow receiving communication with the gas inlet wherein the expander is operable to convert the pressurized gas flow into mechanical energy and a depressurized gas flow, and a generator configured to convert the mechanical energy into electrical energy.
    Type: Grant
    Filed: September 5, 2014
    Date of Patent: January 26, 2016
    Assignee: ElectraTherm, Inc.
    Inventor: Andrew Oxner
  • Patent number: 9134049
    Abstract: An energy recovery apparatus for use in a refrigeration system, comprises an intake port, a nozzle, a turbine and a discharge port. The intake port is adapted to be in fluid communication with a condenser of a refrigeration system. The nozzle is configured to expand refrigerant discharged from the condenser and increase velocity of the refrigerant as it passes through the nozzle. The turbine is positioned relative to the nozzle and configured to be driven by refrigerant discharged from the nozzle. The discharge port is downstream of the turbine and is configured to be in fluid communication with an evaporator of the refrigeration system.
    Type: Grant
    Filed: March 17, 2014
    Date of Patent: September 15, 2015
    Assignee: Regal Beloit America, Inc.
    Inventors: Steven W. Post, Bobby D. Garrison
  • Patent number: 9132923
    Abstract: An aircraft light comprises a housing (24), at least one light source (32) to be cooled, the at least one light source (32) being arranged in the housing (24), a heat sink element (26) thermally coupled to the at least one light source (32) and defining a cooling surface (36) exposable to a cooling airstream (52) for the cooling airstream (52) to flow along the cooling surface (36) in a flow direction. The cooling surface (36) extends between upstream and downstream end portions (40,42) spaced apart in the flow direction and means for generating a pressure difference between the upstream and downstream end portions (40,42) of the cooling surface. Due to the pressure difference, a cooling airstream (52) flowing along the cooling surface (36) is created.
    Type: Grant
    Filed: April 18, 2012
    Date of Patent: September 15, 2015
    Assignee: GOODRICH LIGHTING SYSTEMS GMBH
    Inventor: Andre Hessling
  • Patent number: 9016075
    Abstract: An environmental control system including a turbomachine assembly having a shaft, motor, turbine and compressor, the compressor outputting a compressed air stream, a first valve that splits the compressed air stream into first and second compressed air streams, a heat exchanger to cool the first compressed air stream and output a cooled air stream, a second valve positioned to receive the cooled air stream and split the cooled air stream into first and second cooled air streams, wherein the first cooled stream is expanded in the turbine to produce an expanded air stream that is combined with the second compressed air stream and the second cooled air stream to provide a combined air stream having a temperature and a flow rate, and a controller that communicates control signals to the compressor, motor and first and second valves to control the temperature and flow rate of the combined air stream.
    Type: Grant
    Filed: January 4, 2012
    Date of Patent: April 28, 2015
    Assignee: The Boeing Company
    Inventor: Andrew T. Johnson
  • Patent number: 9003814
    Abstract: A method for operating an air-conditioning system for an aircraft includes compressing ambient air with a compressor driven by a shaft in communication with a motor and a turbine. The method includes forwarding the compressed air to an aircraft cabin for circulation and removing circulated compressed air from the aircraft cabin. The method also includes forwarding the circulated compressed air to the turbine, depressurizing the circulated compressed air in the turbine and capturing energy created by depressurizing the circulated compressed air.
    Type: Grant
    Filed: November 11, 2011
    Date of Patent: April 14, 2015
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Thomas M. Zywiak, Louis J. Bruno
  • Patent number: 8997516
    Abstract: The apparatus has a cooling arrangement with an expander/compressor system, condenser and evaporator primarily for air conditioning. An external heat source is provided for transfer of heat to the expander housing. For example, this heating medium is an electrical heat source in thermal contact with the outer side of the expander housing. Alternatively, the expander is provided inside an externally heated liquid buffer tank.
    Type: Grant
    Filed: February 17, 2011
    Date of Patent: April 7, 2015
    Assignee: AC-Sun ApS
    Inventors: Gunnar Minds, Søren Minds
  • Patent number: 8978381
    Abstract: A method of constructing self-powered air-conditioner comprises a convergent divergent nozzle where powered fan pushes air into said nozzle. While the pushed air accelerates toward the nozzle throat it becomes colder as air internal energy transformed into kinetic energy. An axial turbine installed within the nozzle throat extracts energy from the air in the nozzle and drives an electrical generator that provides electricity to the fan electric motor. Alternatively the turbine and fan are installed on common shaft, which could be the electric generator shaft. The cold air within the nozzle throat cools the nozzle throat skin, which serves as air-conditioner core. The cold nozzle skin is wrapped with coiled pipes in which liquid flows, becomes colder and this cold liquid flows away to heat exchanger where air is flowing through it and becomes colder. This cold air is then flows into spaces needed to be air-conditioned.
    Type: Grant
    Filed: August 9, 2007
    Date of Patent: March 17, 2015
    Inventor: Israel Hirshberg
  • Publication number: 20140366563
    Abstract: A cooling system includes a heat exchanger through which a refrigerant flows, and which rejects heat to a fluid, an evaporator, a first circuit having an expansion device, a second circuit having an expansion machine coupled to a compressor, and a set of valves arranged to direct the refrigerant through the first circuit, the second circuit, or both the first and second circuits based on ambient conditions.
    Type: Application
    Filed: December 17, 2013
    Publication date: December 18, 2014
    Applicants: Rolls-Royce North American Technologies, Inc., Rolls-Royce Corporation
    Inventors: Igor Vaisman, Patrick C. Sweeney, Douglas J. Snyder
  • Publication number: 20140190190
    Abstract: An aircraft air conditioning system comprising a compressor adapted to generate compressed process air, an air conditioning unit adapted to cool and expand compressed process air supplied to the air conditioning unit from the compressor, and an energy converter adapted to convert hydraulic energy into electric energy. The compressor is supplied with electric energy generated by the energy converter by converting hydraulic energy supplied to the energy converter.
    Type: Application
    Filed: January 9, 2014
    Publication date: July 10, 2014
    Inventor: Juergen Kelnhofer
  • Patent number: 8769983
    Abstract: The present invention provides a refrigeration cycle apparatus using a first compressor and a second compressor driven by an expander and including a high and low pressure heat exchanger, in which a low-pressure-side outlet of the high and low pressure heat exchanger is bypassed to a low pressure portion or an intermediate pressure portion to adjust an inlet density at the expander and thereby provide high efficiency. The high and low pressure heat exchanger of the refrigeration cycle apparatus of the present invention changes an amount of heat exchange between a high-pressure refrigerant and a reduced-pressure refrigerant branched from the high-pressure refrigerant at an inlet portion of the high and low pressure heat exchanger and reduced in pressure to adjust the density of the refrigerant flowing in the expander so that power recovered by the expander and power required by the second compressor match.
    Type: Grant
    Filed: March 13, 2009
    Date of Patent: July 8, 2014
    Assignee: Mitsubishi Electric Corporation
    Inventor: Takashi Okazaki
  • Patent number: 8612063
    Abstract: An environmental control systems (ECS) for an aircraft in which bleed air is cooled with ram air, the ECS may include a ram air controller configured to control a rate of ram air flow responsively to a desired temperature of bleed air at a bleed air outlet and a bleed air controller configured to control a rate of bleed air flow responsively to a temperature lower than the desired temperature of the bleed air at the bleed air outlet. Collectively the two controllers may provide a minimizing of ram air usage for cooling the bleed air.
    Type: Grant
    Filed: May 2, 2011
    Date of Patent: December 17, 2013
    Assignee: Honeywell International, Inc.
    Inventors: Andrea Chor Ying Lau, Xiaomei Li
  • Patent number: 8584487
    Abstract: A refrigerant system utilizes an expander to expand refrigerant and to drive or assist in driving an associated compressor. By varying the compressor load, the speed of the expander can be adjusted to achieve the desired thermodynamic characteristics of the expanding refrigerant and enhance expander operation.
    Type: Grant
    Filed: April 10, 2007
    Date of Patent: November 19, 2013
    Assignee: Carrier Corporation
    Inventors: Alexander Lifson, Michael F. Taras
  • Patent number: 8528359
    Abstract: A refrigerant vapor compression system includes a compression device, a heat rejecting heat exchanger, an economizer heat exchanger, an expander and an evaporator disposed in a refrigerant circuit. An evaporator bypass line is provided for passing a portion of the refrigerant flow from the main refrigerant circuit after having traversed a first pass of the economizer heat exchanger through the expander to partially expand it to an intermediate pressure and thence through a second pass of the economizer heat exchanger and into an intermediate pressure stage of the compression device. An economizer bypass line is also provided for passing a portion of the refrigerant from the main refrigerant circuit after having traversed the heat rejecting heat exchanger through a restrictor type expansion device and thence into the evaporator bypass line as liquid refrigerant or a mix of liquid and vapor refrigerant for injection into an intermediate pressure stage of the compression device.
    Type: Grant
    Filed: October 27, 2006
    Date of Patent: September 10, 2013
    Assignee: Carrier Corporation
    Inventors: Alexander Lifson, Michael F. Taras
  • Patent number: 8522572
    Abstract: An aircraft adaptive power thermal management system for cooling one or more aircraft components includes an air cycle system, a vapor cycle system, and a fuel recirculation loop operably disposed therebetween. An air cycle system heat exchanger is between the air cycle system and the fuel recirculation loop, a vapor cycle system heat exchanger is between the vapor cycle system and the fuel recirculation loop, and one or more aircraft fuel tanks are in the fuel recirculation loop. An intercooler including a duct heat exchanger in an aircraft gas turbine engine FLADE duct may be in the air cycle system. The system is operable for providing on-demand cooling for one or more of the aircraft components by increasing heat sink capacity of the fuel tanks.
    Type: Grant
    Filed: May 27, 2011
    Date of Patent: September 3, 2013
    Assignee: General Electric Company
    Inventors: George Albert Coffinberry, Neil Richard Garrigan
  • Patent number: 8516792
    Abstract: A system for managing heat fluxes of an aircraft is provided, including a fuel tank supplying a turbomachine with fuel via a fuel supply circuit; a cell cooling circuit connected to a thermal effluents source, which integrates a first heat exchanger ensuring heat transfer between a coolant circulating in the cell cooling circuit and air flow channeled into a cooling air channel extending from an air intake to an exhaust; and a second heat exchanger ensuring a heat transfer between the coolant circulating in the cell cooling circuit and the fuel. The air intake includes a blocker to open/close it. The system includes a fuel transfer circuit, which connects the fuel tank to the second heat exchanger and provides fuel to the second heat exchanger, including a valve selectively changing a fuel supply direction from the second heat exchanger between the directions of the tank and the fuel supply circuit.
    Type: Grant
    Filed: September 24, 2009
    Date of Patent: August 27, 2013
    Assignee: Airbus Operations SAS
    Inventor: Guillaume Bulin
  • Patent number: 8505317
    Abstract: Refrigerating device formed by a main compressor (190), a condenser (140) downstream of and in fluid communication with the main compressor (190), main expansion means (170) downstream of the condenser (140) and an evaporator (180) downstream of and in fluid communication with the main expansion means (170), which also comprises a turbocompressor unit (160) in fluid communication between the evaporator (180) and the main compressor (190) and a heat exchanger (150, 152) having a hot branch (150c) connected upstream, via an inlet line (145), to the condenser (140) and downstream, via an outlet line (149), to the main expansion means (170) and a cold branch (15Of) connected, upstream, to an expansion means (142, 144) mounted on a branch (146) of the line (145) and, downstream, to a turbine portion (162) of the turbocompressor unit (160). The invention also relates to a method for circulating a refrigerating fluid inside the abovementioned device.
    Type: Grant
    Filed: May 22, 2007
    Date of Patent: August 13, 2013
    Assignee: Angelantoni Life Science SRI
    Inventor: Maurizio Ascani
  • Publication number: 20130160472
    Abstract: An air-conditioning system for an aircraft includes a compressed air branch for conveying externally supplied and pressurized air, preferably bleed air. Furthermore, a cooling circuit for conveying preferably liquid refrigerant is provided and extends through a ram air duct. The system also includes a first heat exchanger for the heat transfer between the compressed air branch and the cooling circuit, a compressed air turbine arranged in the compressed air branch and a cooling circuit compressor arranged in the cooling circuit and mechanically coupled to the compressed air turbine. The system can have a modular design and be positioned at optimal locations in the aircraft due to the separation of the compressed air branch and the cooling circuit. In this way, the length of hot compressed air ducts can be shortened.
    Type: Application
    Filed: February 19, 2013
    Publication date: June 27, 2013
    Applicant: AIRBUS OPERATIONS GMBH
    Inventor: AIRBUS OPERATIONS GMBH
  • Patent number: 8459048
    Abstract: An air conditioning system is provided with mainly an evaporator, a compressor, a condenser and an energy recovery device. The compressor is fluidly connected to the evaporator to compress low-pressure refrigerant exiting the evaporator to high-pressure refrigerant. The condenser is fluidly connected to the compressor to receive the high pressure refrigerant and dissipate heat therefrom. The energy recovery device is configured to extract work from refrigerant flowing therethrough. The energy recovery device includes a movable expander and a valve. The movable expander has an inlet fluidly connected to the condenser to receive high pressure refrigerant exiting the condenser, an outlet fluidly connected to the evaporator to deliver low pressure refrigerant thereto and a chamber fluidly connected between the inlet and the outlet. The valve is configured to control a flow rate of high pressure refrigerant flowing from the inlet to the chamber.
    Type: Grant
    Filed: July 23, 2010
    Date of Patent: June 11, 2013
    Assignee: Nissan North America, Inc.
    Inventor: Ronald S. Eisenhour
  • Publication number: 20130118191
    Abstract: A method for operating an air-conditioning system for an aircraft includes compressing ambient air with a compressor driven by a shaft in communication with a motor and a turbine. The method includes forwarding the compressed air to an aircraft cabin for circulation and removing circulated compressed air from the aircraft cabin. The method also includes forwarding the circulated compressed air to the turbine, depressurizing the circulated compressed air in the turbine and capturing energy created by depressurizing the circulated compressed air.
    Type: Application
    Filed: November 11, 2011
    Publication date: May 16, 2013
    Applicant: HAMILTON SUNDSTRAND CORPORATION
    Inventors: Thomas M. Zywiak, Louis J. Bruno
  • Publication number: 20130118190
    Abstract: A method for operating an air-conditioning system for an aircraft including receiving an available power level from a control system of the aircraft, forwarding air from a first compressed air source to an aircraft cabin and forwarding air from a second compressed air source to the aircraft cabin if the available power level exceeds a threshold value.
    Type: Application
    Filed: November 11, 2011
    Publication date: May 16, 2013
    Applicant: HAMILTON SUNDSTRAND CORPORATION
    Inventors: Louis J. Bruno, Thomas M. Zywiak
  • Patent number: 8418495
    Abstract: An air cycle machine includes two turbines and a compressor mounted on an integral shaft. The integral shaft includes a plurality of shaft sections that are welded together and machined in a single set-up process into a desired shaft shape to provide highly aligned bearing surfaces. The shaft includes three stops that cooperate with three fasteners to secure the two turbines and the compressor on the shaft.
    Type: Grant
    Filed: September 20, 2005
    Date of Patent: April 16, 2013
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Brent J. Merritt, Craig M. Beers
  • Publication number: 20130061617
    Abstract: An environmental control system (ECS) includes an air cycle machine with an expansion turbine and a condenser having a cold air inlet connected to receive air from the expansion turbine. The condenser has hollow, internally finned hot bars positioned at the cold air inlet to prevent ice formation at the cold air inlet.
    Type: Application
    Filed: September 13, 2011
    Publication date: March 14, 2013
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: Joe Borghese, Tim Moorhouse, Jorge Alvarez
  • Patent number: 8365550
    Abstract: This invention relates to an aircraft air conditioning system with at least one compressor, a first conduit connected with a pressure side of the compressor and at least one cooling unit provided downstream of the compressor. A second bypass conduit is connected with the pressure side of the compressor to conduct at least part of the compressed air around at least one cooling unit and has a throttle for varying air flow therethrough.
    Type: Grant
    Filed: July 16, 2007
    Date of Patent: February 5, 2013
    Assignee: Liebherr-Aerospace Lindenberg GmbH
    Inventor: Franz Martin Vögel
  • Publication number: 20130000328
    Abstract: The air conditioning system uses an air cycle thermodynamic process. The system comprises a centrifuge. This centrifuge includes at one of its ends, an axial inlet that funnels air into a centrifugal compressor rotating in unison with the centrifuge. The air is compressed, adiabatically heated and directed to a heat exchanger mounted in the rim of, and rotating with the centrifuge. The air is accelerated with respect the centrifuge by varying the centrifuge radius or by using forward leaning impeller blades. The air is cooled by the heat exchanger and directed to an expander also rotating with the centrifuge. The air is expanded and adiabatically further cooled. The cold air exits the centrifuge through an axial outlet located at the second end of the centrifuge.
    Type: Application
    Filed: September 8, 2012
    Publication date: January 3, 2013
    Inventor: George Samuel Levy
  • Patent number: 8327651
    Abstract: A cooling system includes a compressor for compressing a refrigerant from a subcritical state to a supercritical state, a cooler for transferring heat from the refrigerant, an expander for expanding the refrigerant in the supercritical state, an expansion valve for expanding the refrigerant from the supercritical state to the subcritical state and an evaporator for transferring heat from a cooling fluid to the refrigerant in the subcritical state. Work extracted by the expander provides power to the compressor. A method for cooling a vehicle includes compressing a refrigerant from a subcritical state to a supercritical state, cooling the refrigerant, expanding the refrigerant in the supercritical state where work produced by expanding the refrigerant is used to compress the refrigerant, expanding the refrigerant from the supercritical state to the subcritical state, cooling a cooling fluid with the refrigerant in the subcritical state and cooling vehicle components with the cooling fluid.
    Type: Grant
    Filed: July 7, 2009
    Date of Patent: December 11, 2012
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Adam M. Finney, Young K. Park, Scott F. Kaslusky, Daniel R. Sabatino
  • Publication number: 20120285184
    Abstract: An environmental control system (ECS) for providing conditioned air to a cabin of an aircraft at a desired rate may include a bleed-air driven primary air treatment unit configured to produce pack supply air and to recirculate a portion of the pack supply air into a compressor of the primary air treatment unit. The ECS may also include a bleed-air driven secondary air treatment unit configured to compress ram air at a rate that corresponds to the rate of recirculation. The ECS may be configured to selectively deliver conditioned air from both the primary and the secondary air treatment units to the cabin.
    Type: Application
    Filed: May 9, 2011
    Publication date: November 15, 2012
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventor: Soren Voinov
  • Patent number: 8297064
    Abstract: An energy efficient air conditioning system preferably includes a compressor, a reaction turbine, an electrical generator, an expansion device, an evaporator coil, an evaporator fan and a refrigerant gas. A condenser coil and fan are replaced with the reaction turbine. Hot high pressurized gas is piped into the reaction turbine from the compressor, which causes a drive shaft of the reaction turbine to spin the electrical generator. High pressurized liquid exits the reaction turbine into the expansion device as a high pressure liquid. A low pressure liquid exists at an output of the expansion device and enters the evaporator coil. The low pressure liquid boils, absorbing heat in the evaporator. The evaporator fan blows warm air from a confined space over the evaporator coil to provide a flow of cold air to the confined space. The low pressure gas then enters the compressor to start a new cycle.
    Type: Grant
    Filed: June 23, 2011
    Date of Patent: October 30, 2012
    Inventor: James M. Walters
  • Patent number: 8281605
    Abstract: Embodiments of a heat transfer apparatus, and related methods, involve a curved flow path, a heat source external to and in thermal communication with at least a portion of an inner radial boundary of the curved flow path, and a working fluid, including a heavier component and a lighter component, flowing through the flow path. The flow path causes the working fluid to experience centrifugal force so as to preferentially force the heavier component toward the exterior wall portion and thereby cause the lighter component to preferentially absorb heat from the interior wall portion.
    Type: Grant
    Filed: April 8, 2009
    Date of Patent: October 9, 2012
    Assignee: Machflow Energy, Ing.
    Inventors: Arthur R. Williams, Charles Agosta
  • Publication number: 20120192578
    Abstract: A method for managing heat in an airplane includes extracting hot bleed air from a gas turbine engine, and cooling the hot bleed air in a first heat exchanger thereby forming warm bleed air. The method further includes expanding the warm bleed air with a turbine thereby forming cool bleed air, and using the cool bleed air as a heat sink in a second heat exchanger associated with an environmental control system and thereby forming used bleed air.
    Type: Application
    Filed: January 27, 2011
    Publication date: August 2, 2012
    Applicant: HAMILTON SUNDSTRAND CORPORATION
    Inventor: Adam M. Finney
  • Patent number: 8109116
    Abstract: A refrigeration air conditioner includes a first equalizer pipe connecting a bottom portion of a first hermetic vessel, which contains a main compression mechanism and lubricating oil, to a bottom portion of a second hermetic vessel, which contains an expansion mechanism, a sub-compression mechanism, and lubricating oil. A second equalizer pipe connects a side of the second hermetic vessel at a position higher than a minimum oil level to a suction side of the main compression mechanism. The space within the second hermetic vessel is isolated from the expansion mechanism and the sub-compression mechanism, and the pressure within the second hermetic vessel is not dependent upon the pressure within the expansion mechanism and the pressure within the sub-compression mechanism.
    Type: Grant
    Filed: May 24, 2006
    Date of Patent: February 7, 2012
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shin Sekiya, Masayuki Kakuda, Toshihide Koda, Masahiro Sugihara
  • Publication number: 20120000205
    Abstract: An aircraft adaptive power thermal management system for cooling one or more aircraft components includes an air cycle system, a vapor cycle system, and a fuel recirculation loop operably disposed therebetween. An air cycle system heat exchanger is between the air cycle system and the fuel recirculation loop, a vapor cycle system heat exchanger is between the vapor cycle system and the fuel recirculation loop, and one or more aircraft fuel tanks are in the fuel recirculation loop. An intercooler including a duct heat exchanger in an aircraft gas turbine engine FLADE duct may be in the air cycle system. The system is operable for providing on-demand cooling for one or more of the aircraft components by increasing heat sink capacity of the fuel tanks.
    Type: Application
    Filed: May 27, 2011
    Publication date: January 5, 2012
    Inventors: George Albert Coffinberry, Neil Richard Garrigan
  • Patent number: 8056350
    Abstract: An apparatus for cooling, comprising: a liquid pump for transport of fluid through a heating cycle, an external heat source for heating the fluid in the heating cycle, for example a solar heater directly connected to the heating cycle or connected through a heat exchanger, an expander with an expander inlet and an expander outlet, the expander inlet having a fluid connection to the external heat source for receiving fluid in the gas phase to drive the expander by expanding the fluid, a compressor with a compressor inlet and a compressor outlet, the compressor being driven by the expander for compressing working fluid from a low pressure compressor inlet gas to a high pressure compressor outlet gas, a first heat exchanger with a fluid connection to the compressor outlet and connected to the expander inlet for transfer of heat from the high pressure compressor outlet gas to the fluid in the heating cycle, a second heat exchanger with a condenser for condensing the working fluid from the expander by energy trans
    Type: Grant
    Filed: September 28, 2006
    Date of Patent: November 15, 2011
    Assignee: AC-Sun ApS
    Inventors: Gunnar Minds, Søren Minds, John Steen Jensen
  • Publication number: 20110138822
    Abstract: An energy supply system for operating at least one air conditioning system of an aircraft, comprises at least one air line network and at least one electric line network. The air line network is connected to the air conditioning system and at least one bleed air connection for routing bleed air to the air conditioning system. The electric line network is connected to the air conditioning system and at least one electrical energy source for routing electrical energy to the air conditioning system. The air conditioning system has an electrically operable cooling device. By means of the energy supply system according to the invention the energy withdrawn from the power units is better adapted to the energy necessary for operating the air conditioning system and other systems—such as, for example, wing de-icing—and therefore reduces the excess fuel consumption of the aircraft.
    Type: Application
    Filed: November 26, 2008
    Publication date: June 16, 2011
    Inventors: Jan Dittmar, Nicolas Antoine, Uwe Buchholz
  • Patent number: 7918094
    Abstract: Heat pumps move heat from a source to a higher temperature heat sink. This invention enables spontaneous source-to-sink heat transfer. Spontaneous heat transfer is accomplished by conducting heat from the source through rotating disks to a portion of the generally warmer sink flow that is cooled to a temperature below that of the source by the Bernoulli effect. The nozzled flow required for Bernoulli cooling is provided by the corotating disk pairs. The distance between the opposing surfaces of the disk pair decreases with distance from the rotation axis, forming a nozzle. The heat-sink flow through the nozzle is maintained by centrifugal force caused by the circular motion of the gas near the disk surfaces. Embodiments of the invention differ in the paths followed by the source and sink fluid flows, by the number of disk pairs and by the state (gas or liquid.) of the heat source.
    Type: Grant
    Filed: March 9, 2006
    Date of Patent: April 5, 2011
    Assignee: MachFlow Energy, Inc.
    Inventors: Arthur R. Williams, Charles Agosta
  • Patent number: 7908872
    Abstract: Heat pumps move heat from a source to a warmer sink, with Bernoulli heat pumps accomplishing this movement by reducing the temperature in a portion of the generally-warmer heat-sink flow. Heat flows spontaneously from the generally cooler heat-source flow into the locally cold portion of the heat-sink flow, which is the neck of a Venturi. The temperature reduction results from the Bernoulli conversion of random gas-particle motion (temperature and pressure) into directed motion (flow). This invention is a Bernoulli heat pump in which the heat transfer into the Venturi neck exploits unusual thermodynamic transport properties of rare-gases. Rare gases, especially mixtures of them, possess unusually small Prandtl numbers and thereby facilitate the diffusion of random particle motion (heat) relative to the diffusion of directed particle motion (viscosity), viscous friction being responsible for most of the power consumed by a Bernoulli heat pump.
    Type: Grant
    Filed: August 3, 2006
    Date of Patent: March 22, 2011
    Assignee: MachFlow Energy Inc.
    Inventors: Arthur R. Williams, Charles C. Agosta
  • Publication number: 20110005244
    Abstract: A cooling system includes a compressor for compressing a refrigerant from a subcritical state to a supercritical state, a cooler for transferring heat from the refrigerant, an expander for expanding the refrigerant in the supercritical state, an expansion valve for expanding the refrigerant from the supercritical state to the subcritical state and an evaporator for transferring heat from a cooling fluid to the refrigerant in the subcritical state. Work extracted by the expander provides power to the compressor. A method for cooling a vehicle includes compressing a refrigerant from a subcritical state to a supercritical state, cooling the refrigerant, expanding the refrigerant in the supercritical state where work produced by expanding the refrigerant is used to compress the refrigerant, expanding the refrigerant from the supercritical state to the subcritical state, cooling a cooling fluid with the refrigerant in the subcritical state and cooling vehicle components with the cooling fluid.
    Type: Application
    Filed: July 7, 2009
    Publication date: January 13, 2011
    Applicant: HAMILTON SUNDSTRAND CORPORATION
    Inventors: Adam M. Finney, Young K. Park, Scott F. Kaslusky, Daniel R. Sabatino
  • Patent number: 7861541
    Abstract: In a refrigeration system, an asymmetric scroll expander has an orbiting scroll element engaged with a fixed scroll element. The orbiting scroll element and fixed scroll element can define a first expansion pocket and a second expansion pocket at positions relative to one another.
    Type: Grant
    Filed: July 13, 2005
    Date of Patent: January 4, 2011
    Assignee: Tiax LLC
    Inventors: John T. Dieckmann, Detlef Westphalen
  • Patent number: 7837752
    Abstract: A rigid or semi-rigid demister pad is positioned between an air turbine and an inertial water removal device such as extractor in an air conditioning system for an aircraft. The demister pad comprises packed fibers or strands whose diameter typically ranges from approximately 10 or fewer microns to approximately 280 microns. The demister is capable of catching very small droplets discharged from the air turbine that coalesce into larger droplets that exit the demister pad and enter an adjacent water removal device downstream from the pad to separate the larger water droplets from the stream of air. This avoids using a water separator containing a coalescer bag that requires frequent maintenance and is sensitive to dirt and freezing. The demister can operate at freezing temperature, is not dirt-sensitive and requires no maintenance.
    Type: Grant
    Filed: December 3, 2007
    Date of Patent: November 23, 2010
    Assignee: Honeywell International Inc.
    Inventors: Ranjit R. Darke, Michael B. Faust, Allen K. MacKnight, Russell Johnson, Alexander M. Bershitsky
  • Publication number: 20100251766
    Abstract: The present invention provides a method and apparatus for generating refrigeration in a process operating at sub-ambient temperatures in which the refrigeration is generated by a turboexpander. The turboexpander is coupled to a generator controlled so that its speed is maintained at a setpoint through electromagnetic braking and its power output is maintained at line matching voltage and frequency. The speed control of the generator therefore, also controls the speed of the turboexpander. The setpoint is calculated to be equal to a product of an operational efficiency parameter, U/Co, and a square root of twice the enthalpy drop in the flow passing through the turboexpander divided by a product of pi and a diameter of an impeller employed within the turboexpander.
    Type: Application
    Filed: April 3, 2009
    Publication date: October 7, 2010
    Inventors: Jeremiah James Rauch, Robert Leroy Baker, Gerald T. O'Connor, Michael John Stanko, Murali Chinta
  • Patent number: 7797962
    Abstract: The present disclosure relates to a method of operating an aircraft system, in particular for the purpose of fresh air supply, air-conditioning and pressurization of an aircraft cabin, having a first compressed air source formed by a first compressor charged with ambient air, ram air and/or precompressed air and driven by means of at least one motor and/or of at least one turbine and whose outlet is in direct or indirect communication with an aircraft cabin, said aircraft system having at least one second compressed air source whose outlet can be connected directly or indirectly to the aircraft cabin, wherein only the first compressed air source is in communication with the aircraft cabin in a first operating mode, wherein both the first and the second compressed air sources are in communication with the aircraft cabin in a second operating mode, and wherein the selection of the operating mode depends on the pressure of the ambient air such that the first operating mode is set at a high pressure of the ambien
    Type: Grant
    Filed: June 28, 2006
    Date of Patent: September 21, 2010
    Assignee: Liebherr-Aerospace Lindenberg GmbH
    Inventors: Hubert Kresser, Markus Hirschmann, Alfred Sauterleute, David Lavergne, Laurent Hartenstein
  • Patent number: 7753975
    Abstract: A system for conditioning a gas. The system includes a compressor for compressing and heating the gas into a hot gas; an airflow device generating an airflow; and a heat exchanger receiving in a first flow path the hot gas and in a second flow path the airflow. Heat is transferred from the hot gas to the airflow to generate a cool gas and hot airflow, and moisture condenses within the cool gas. A moisture separator separates condensed moisture from the cool gas to generate a saturated gas. A reheater receives in one flow path the saturated gas from the moisture separator and in another flow path the hot airflow from the heat exchanger. Heat is transferred in the reheater from the hot airflow to the saturated gas to generate a superheated gas having a temperature above the saturation temperature of the gas.
    Type: Grant
    Filed: October 24, 2006
    Date of Patent: July 13, 2010
    Assignee: Ingersoll Rand Energy Systems Corporation
    Inventors: Donald Mark Wood, Richard L. Dishman, Jr.
  • Patent number: 7730741
    Abstract: An outdoor heat exchanger (23), an indoor heat exchanger (24), a compression/expansion unit (30), and other circuit components are connected in a refrigerant circuit (20). The compression/expansion unit (30) includes a compression mechanism (50), an electric motor (45), and an expansion mechanism (60). In addition, the refrigerant circuit (20) has an injection pipeline (26). When an injection valve (27) is opened, a portion of high pressure refrigerant after heat dissipation flows into the injection pipeline (26) and is introduced into an expansion chamber (66) of the expansion mechanism (60) in the process of expansion. In the expansion mechanism (60), power is recovered from both high pressure refrigerant introduced into the expansion chamber (66) from an inflow port (34) and high pressure refrigerant introduced into the expansion chamber (66) from the injection pipeline (26).
    Type: Grant
    Filed: July 1, 2005
    Date of Patent: June 8, 2010
    Assignee: Daikin Industries, Ltd.
    Inventors: Katsumi Sakitani, Michio Moriwaki, Yume Inokuchi, Yoshinari Sasaki
  • Patent number: 7716941
    Abstract: Multi-type air conditioner comprising an outdoor unit installed in an outdoor, comprising a compressor, a refrigerant flow controlling part connected to a discharge end of the compressor for guiding the refrigerant proper to operation conditions selectively, an outdoor heat exchanger connected to the refrigerant flow controlling part, a defrosting device at a side of the outdoor heat exchanger, and a piping system connected between the parts, a plurality of indoor units each installed in a room and having an indoor heat exchanger and an electronic expansion valve having one end connected to one end of the indoor heat exchanger, and a distributor between the outdoor unit and the indoor units for selectively guiding refrigerant from the outdoor unit to the plurality of indoor units proper to operation conditions, and guiding the refrigerant passed through the indoor units to the outdoor unit again.
    Type: Grant
    Filed: February 26, 2007
    Date of Patent: May 18, 2010
    Assignee: LG Electronics Inc.
    Inventors: Jong Han Park, Young Min Park, Chang Seon Lee, Sung Oh Choi, Sung Chun Kim, Seung Yong Chang, Seok Ho Yoon, Baik Young Chung
  • Patent number: 7669430
    Abstract: The present invention realizes a reliable heat pump apparatus and heat pump apparatus having high recovering efficiency. The heat pump apparatus includes an expander 711 for expanding working fluid, a permanent magnet type synchronization power generator 710 which is disposed for recovering power by the expander 711 and which generates three phase AC power, and a first converter 708 which converts the AC power to DC power, and which rotates the power generator 710 at a predetermined target number of revolutions by switching of a switching element group 709. The generated electricity is consumed by connection of an AC power supply 701 to a DC power line which is rectified and smoothened by a rectifier circuit 702 and a smoothing capacitor 703, and by driving of an electric motor 706 which rotates a compressor 707 through a motor drive apparatus 704, and the power is efficiently recovered.
    Type: Grant
    Filed: April 26, 2005
    Date of Patent: March 2, 2010
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Keizo Matsui, Hiroshi Hasegawa, Fumitoshi Nishiwaki
  • Publication number: 20090282845
    Abstract: An expander of the invention includes: n-number of rotary type fluid mechanisms (where n is an integer equal to or greater than 2), a first suction port (41b) for sucking a working fluid into a suction-side space (55a) of a first fluid mechanism (41), a communication port (43a) connecting a discharge-side space (55b) of a k-th fluid mechanism (where k is an integer from 1 to n?1) and a (k+1)-th suction-side space (56a) to form a single space, and a discharge port (51a) for discharging the working fluid from the discharge-side space of an n-th fluid mechanism. The expander further includes a second suction port (72f) being capable of changing its connecting position to the suction-side space (55a) of the first fluid mechanism (41), for sucking the working fluid into the suction-side space (55a).
    Type: Application
    Filed: October 27, 2006
    Publication date: November 19, 2009
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    Inventors: Hiroshi Hasegawa, Masaru Matsui, Atsuo Okaichi, Tomoichiro Tamura, Takeshi Ogata, Keizo Matsui, Tetsuya Matsuyama
  • Publication number: 20090277192
    Abstract: Heat pumps move heat from a source to a higher temperature heat sink. This invention enables spontaneous source-to-sink heat transfer. Spontaneous heat transfer is accomplished by conducting heat from the source through rotating disks to a portion of the generally warmer sink flow that is cooled to a temperature below that of the source by the Bernoulli effect. The nozzled flow required for Bernoulli cooling is provided by the corotating disk pairs. The distance between the opposing surfaces of the disk pair decreases with distance from the rotation axis, forming a nozzle. The heat-sink flow through the nozzle is maintained by centrifugal force caused by the circular motion of the gas near the disk surfaces. Embodiments of the invention differ in the paths followed by the source and sink fluid flows, by the number of disk pairs and by the state (gas or liquid.) of the heat source.
    Type: Application
    Filed: March 9, 2006
    Publication date: November 12, 2009
    Inventors: Arthur R. Williams, Charles Agosta
  • Publication number: 20090249806
    Abstract: Embodiments of a heat transfer apparatus, and related methods, involve a curved flow path, a heat source external to and in thermal communication with at least a portion of an inner radial boundary of the curved flow path, and a working fluid, including a heavier component and a lighter component, flowing through the flow path. The flow path causes the working fluid to experience centrifugal force so as to preferentially force the heavier component toward the exterior wall portion and thereby cause the lighter component to preferentially absorb heat from the interior wall portion.
    Type: Application
    Filed: April 8, 2009
    Publication date: October 8, 2009
    Inventors: Arthur R. Williams, Charles Agosta