Airbus Operations Gmbh

Robert Boschgmbh

Zexel Valeo Compressor Europe Gmbh

Spauschus Associates, Inc.

Other

Technische Universitát Dresden

Weiss Technik Gmbh

Ipetronik Gmbh & Co. Kg

Valeo Compressor Europe Gmbh

Ullrich Hesse

Enrico Klausner

Frank Klimpel

Hans Brunswig

Markus Piesker

Otfried Schwarzkopf

Steffen Golle

Mario Raddatz

Hans O Spauschus

Siegfried E Schustek

Christian Haack

Sebastian Roering

Klaus-Peter Schnelle

Martin Sieme

Walter Lehr

Dietmar Steiner

Oliver Tschismar

Gerd Wedler

Andreas Inhoff

Walter Zipp

Daniel Damson

Uwe Gampe

Thomas Tiedemann

Tobias Goepfert

Armin Marko

Hans-Ruediger Weiss

Robin Langebach

Philipp Goldmann

Andreas Wagner

Yixia Xu

Tobias GÖPFERT

According to various embodiments of the invention, a heat exchanger can have at least one duct for conveying a coolant, wherein the at least one duct has a first section and a second section, the first section being arranged in the at least one duct upstream relative to the second section, in relation to a flow direction of the coolant, the second section having a cross section area that is larger than a cross section area of the first section, such that a sublimation of the coolant in the second section is made possible.

Heat exchanger and cooling method

A refrigerant for a cooling device () comprising a cooling circuit () with at least one heat exchanger, in which the refrigerant undergoes a phase transition, the refrigerant being a refrigerant mixture composed of a mass fraction of carbon dioxide and a mass fraction of at least one other component, wherein the mass fraction of carbon dioxide in the refrigerant mixture is 10 to 50 mass percent, preferably 30 to 50 mass percent, the other component being pentafluoroethane and/or difluoromethane.

Coolant

An aircraft air conditioning system includes an ambient air line configured to have ambient air flow therethrough and being connected to a mixer of the air conditioning system to feed ambient air to the mixer, and a recirculation air line configured to have recirculation air flow therethrough and being connected to the mixer to feed to the mixer recirculation air discharged from an aircraft area to be air conditioned. A refrigerating machine of the air conditioning system includes a refrigerant circuit configured to have a refrigerant flow therethrough and being thermally coupled to the ambient air line and to the recirculation air line to transmit heat from the ambient air flowing through the ambient air line and from the recirculation air flowing through the recirculation air line to the refrigerant circulating in the refrigerant circuit, before the ambient air and the recirculation air are fed into the mixer.

Aircraft air conditioning system and method for operating such an aircraft air conditioning system

An aircraft air conditioning system includes an ambient air line connected to an aircraft air conditioning system mixer to supply ambient air, and a cabin exhaust air line connectable to an aircraft cabin, and a bleed air line drawn off from an engine or auxiliary power unit. An ambient air compressor in the ambient air line compresses ambient air. A refrigerating apparatus includes a refrigerant circuit and a refrigerant compressor. The refrigerant circuit is thermally coupled to the air line to transfer heat from air line air to refrigerant circulating in the refrigerant circuit before the air is supplied to the mixer. A turbine is coupled to the air compressor. A control device controls the aircraft air conditioning system wherein in a first operating state the turbine receives air from the air line, and in a second operating state receives a mixture of bleed air and cabin exhaust air.

Aircraft air conditioning system that is operable assisted by cabin exhaust air with a pneumatically powered ambient air compressor

An aircraft air conditioning system includes an ambient air line which is configured have ambient air flow therethrough and is connected to a mixer of the aircraft air conditioning system to supply ambient air to the mixer, and a refrigerating machine which includes a refrigerant circuit configured to have a refrigerant flow therethrough, the refrigerant circuit being thermally coupled to the ambient air line to transfer heat, from the ambient air flowing through the ambient air line, to the refrigerant circulating in the refrigerant circuit, before the ambient air is supplied into the mixer. A control device is configured to control the ambient air flow through the ambient air line such that the ambient air is selectively conducted through different sections of the ambient air line or different bypass lines running parallel to the sections of the ambient air line.

Operating-phase-dependently controllable aircraft air conditioning system and method for operating such an aircraft air conditioning system

An aircraft air conditioning system includes an ambient air line connected to an air conditioning system mixer to supply ambient air, and a cabin exhaust air line connectable to an aircraft cabin for being flown through with cabin exhaust air. An ambient air compressor in the ambient air line compresses ambient air in the ambient air line. A refrigerating apparatus includes a refrigerant circuit and a refrigerant compressor in the circuit. The refrigerant circuit is thermally coupled to the ambient air line to transfer heat from ambient air line air to refrigerant circulating in the circuit before the ambient air is supplied to the mixer. A turbine is coupled to the air compressor. A control device controls the air conditioning system wherein in a first operating state the turbine receives air from the ambient air line, and in a second operating state receives cabin exhaust air.

Aircraft air conditioning system that is operable assisted by cabin exhaust air with an electrically powered ambient air compressor

An aircraft air conditioning system comprising an ambient air supply line allowing a flow of ambient air therethrough, an ambient air cooling device to cool the air flowing through the ambient air supply line, and a discharge line connected to the ambient air cooling device and an aircraft cabin. A compressed air supply line allows a flow of compressed air therethrough, a compressed air cooling device is connected to the compressed air supply line to cool the air flowing through the compressed air supply line, and a discharge line is connected to the compressed air cooling device and to the aircraft cabin. A refrigerant circuit allows the flow of a two-phase refrigerant therethrough and converts the two-phase refrigerant from the liquid state into the gaseous state of aggregation and thereafter back again. The refrigerant circuit supplies cooling energy to the ambient air cooling device and the compressed air cooling device.

Aircraft air conditioning system and method of operating an aircraft air conditioning system

A storage assembly, which is in particular suitable for use in a cooling system designed for an operation with a two-phase coolant medium, comprising a storage container with a receiving area for receiving a coolant medium and a conveying device for conveying coolant medium from the receiving area of the storage container. The conveying device is formed integral with the storage container of the storage assembly.

Storage assembly with a conveying device integrated into a storage container

Vehicle air-conditioning system, in particular COair conditioner, the refrigerant cycle of which comprises the following components: a compressor, a refrigerant cooler, an internal heat exchanger between the refrigerant-cooler side and the evaporator side, an expansion valve, and an evaporator. To switch the air-conditioning system from cooling-mode operation to heating-mode operation, between the compressor and the refrigerant cooler there is integrated an auxiliary heat exchanger corresponding to a cooling circulation on the engine side, such that downstream of the auxiliary heat exchanger there is disposed an expansion valve by means of which during heating-mode operation the refrigerant can be throttled to a lower pressure.

Vehicle conditioning system

In an axial piston compressor for a refrigerant, in particular for a vehicle air conditioner, with a housing () in the interior of which is disposed at least one bearing (), with an output conduit () for the compressed refrigerant, and with a lubricant that is present in the interior of the housing (), the lubrication is to be improved. For this purpose there is provided in the housing at least one lubricant channel to conduct lubricant to the bearing, as well as a lubricant separator () that is connected to the output conduit () for the refrigerant and incorporates a collection chamber () that contains the lubricant separated from the compressed refrigerant and is connected to the lubricant channel () by a feed line (), such that the lubricant is propelled out of the lubricant separator and into the lubricant channel entirely on the basis of the pressure difference between the compression pressure of the lubricant and the interior pressure of the housing.

Axial piston compressor

A drive arrangement for at least one auxiliary system of a motor vehicle, having an internal combustion engine, at least one supplementary motor, and a gear, is provided. The gear is a planetary gear which is operatively connected to the engine and the at least one supplementary motor each via a respective input shaft, and to the auxiliary system via an output shaft.

Drive arrangement for at least one secondary aggregate of a motor vehicle and method for operating the drive arrangement

An adjustable radial pump for feeding a cooling medium for a motor vehicle having a housing, a pump wheel provided with pump vanes, the pump wheel being supported in the housing and driven by a motor, the housing having at least one integrated inlet and outlet opening, an adjusting device for providing an adjustment of the medium to be fed independently from the rotary speed of the motor, the adjusting device being operatively connected with a sleeve which is adjustable by the adjusting device over the pump vanes in an axial direction.

Adjustable radial pump, in particular for feeding a cooling medium for a motor vehicle

In an air conditioning system for a motor vehicle with a compressor that comprises at least one cylinder with movable piston ( ), to improve the sealing action between the skirt of the piston ( ) and the cylinder wall ( ) it is proposed to dispose on the skirt of the piston ( ) a labyrinth seal and/or to dispose a ring ( ) made of a flexible sealing material in a slot ( ) within which a piston ring ( ) is mounted.

Air conditioning system for an automobile

A method and a device for the control/regulation of the heat flows caused by heat generators and heat consumers in a motor vehicle, at least on the basis of a momentary load state of the motor vehicle engine and the momentary vehicle operating conditions and ambient conditions. A control/regulation device makes a forecast of the load state of the engine cooling system lying ahead, on the basis of a model that takes into consideration driving condition-relevant quantities and the thermal inertia of the engine cooling system and of engine load-relevant ambient conditions lying ahead, recorded by a satellite navigation system, and carries out a corresponding control/regulation of all heat flows in the motor vehicle, especially of the engine cooling system.

Method for controlling heat flows in a motor vehicle

A method and a device for use in the air conditioning of an interior of a motor vehicle equipped with an air conditioning system. In particular, the condensation water, produced when operating the air conditioning system while driving, is collected when the vehicle is standing still, and the intake air supplied to the interior or the outgoing air removed from the interior is humidified with the collected water so that the vehicle is cooled by evaporative cooling when it is standing still. While driving, the outside air intake may be pre-cooled by the cooled outgoing air by using a heat exchanger.

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Affalterbach, Germany

Ullrich Hesse