Abstract: A portion of feed air is expanded and cooled in front of a main heat exchanger, and is used as cold for precooling the remaining unexpanded feed air inside the main heat exchanger. A portion of the feed air precooled inside the main heat exchanger is removed to outside the main heat exchanger, expanded and cooled, and used as cold to cool the remaining unexpanded precooled feed air inside the main heat exchanger.

Abstract: Methods and systems are provided for a heat exchanger for a motorized vehicle. In one example, a heat exchanger includes a plurality of tubes coupled to a header, with each tube including a partition extending a height of the tube. The partition includes a notch positioned at an end of the tube coupled to the header, with the notch extending into the tube.

Abstract: A heat exchanger can include a monolithically formed body defining at least two channels configured to allow fluid to flow therethrough, at least one of the at least two channels at least partially wrapping around or within at least one other of the at least two channels. In certain embodiments, the at least two channels can include a first channel and a second channel, wherein the first channel is at least partially wound around or within the second channel.

Abstract: A cryocooler includes a second-stage cooling stage, a second cylinder which includes the second-stage cooling stage on a terminal of the second-stage cylinder, a second-stage displacer which includes a magnetic regenerator material and is accommodated in the second-stage cylinder so as to be able to reciprocate in the second-stage cylinder, and a tubular magnetic shield which is installed on the second-stage cooling stage and extends along the second-stage cylinder outside the second-stage cylinder. The magnetic shield is formed of a normal conductor and a product of an electrical conductivity in a temperature range of 10 K (Kelvin) or less and a thickness of the tubular magnetic shield is 60 MS (Mega-Siemens) to 1980 MS.

Abstract: A method for controlling a vapour compression system (1) is disclosed. A mass flow of refrigerant along a part of the refrigerant path is estimated, based on measurements performed by one or more pressure sensors (10, 12, 13) for measuring a refrigerant pressure at selected positions along the refrigerant path and one or more temperature sensors (11, 14) for measuring a refrigerant temperature at selected positions along the refrigerant path. A refrigerant pressure or a refrigerant temperature at a selected position a pressure sensor (10, 12, 13) or temperature sensor (11, 14) along the refrigerant path is derived, based on the estimated mass flow. The vapour compression system (1) is allowed to continue operating, even if a sensor (10, 11, 12, 13, 14) is malfunctioning or unreliable.

Abstract: A heat exchanger module includes a condenser unit and an evaporator unit. The evaporator unit includes N pieces of parallel-flow heat exchangers arranged adjacently, and the coolant temperatures reduce gradually from the first to Nth parallel-flow heat exchangers along an air flow direction in the evaporator unit. A counter-current mounting method is adopted in the parallel-flow heat exchangers of the evaporator unit in the heat exchanger module provided by the present invention. The coolant temperature of each parallel-flow heat exchanger is lower than that of the previous one, the temperature difference between air and coolant is relatively uniform by using the counter-current method so as to reach a better heat exchange effect.

Abstract: Provided is a vehicle heat exchanger including a plurality of tubes through which a fluid flows, a plurality of cooling fins interposed between adjacent tubes, and a graphene material attached to a surface of each tube and/or a surface of each cooling fin. The graphene material may include a first graphene layer and a second graphene layer stacked on the first graphene layer.

Abstract: A spiral heat exchanger is formed of at least two sheets extending along a spiral-shaped path around a common centre body and separated to form at least a first and a second spiral-shaped substantially parallel flow channels extending and enabling flow communication between a radially outer orifice and a radially inner orifice. The centre body includes a wall body with a first conduit at the inner surface of the wall body being in fluid connection to the first flow channel, and a second conduit formed at the outer surface of the wall body and being in fluid connection to the second flow channel.

Abstract: An apparatus for reliquefaction of boil-off gas for a vessel, comprises: a compression unit for compressing the boil-off gas discharged from the storage tank; and a heat exchanger for heat-exchanging the compressed boil-off gas compressed by the compression unit with the boil-off gas discharged from the storage tank; a first expansion means for dividing the boil-off gas passing through the heat exchanger into at least two flows including a first flow and a second flow, and expanding the divided first flow; a first intercooler for cooling the second flow remaining after the division of the first flow by using the first flow expanded by the expansion means as a refrigerant; and a receiver for receiving a second flow having passed through the first intercooler, in which a downstream pressure of the compression unit is controlled by a flow discharged from the receiver.

Abstract: A method of operating, during an at least partial shutdown of a refrigerant distribution subsystem in a natural gas liquefaction facility, can include: draining down at least a portion of a mixed refrigerant in one or more components of the refrigerant distribution subsystem into a high-pressure holding tank of a drain down subsystem, wherein draining down to the high-pressure holding tank is achieved by pumping the mixed refrigerant from the refrigerant distribution subsystem to the high-pressure holding tank or backfilling the refrigerant distribution subsystem with a backfill gas; and optionally, transferring at least a portion of the mixed refrigerant into a low-pressure drum from the high-pressure holding tank.

Abstract: A drinking vessel for delivering air to a user may include an outer shell and an inner shell. The outer shell may define at least an air inlet at a lower region of the outer shell and an air outlet at an upper region of the outer shell. The inner and outer shells may together at least partially define an air flow passage which may be in communication with the air inlet and the air outlet. The drinking vessel may include an air moving device. The air moving device may be configured to move air from the air inlet, through the air flow passage, to the air outlet. The drinking vessel may include a power source and an actuation device. The actuation device may be operably coupled with the air moving device and the power source for selectively activating the air moving device with the power source.

Abstract: A chamber for a distillation column that is to operate at a temperature below 0° C., comprises at least four walls, which in use are vertical, and a roof, the chamber being designed to contain at least one distillation column, at least one other element that is to operate at a cryogenic temperature, and insulation, at least one wall being convex.

Abstract: A vehicle cooling system includes a circulation flow path section which has a first flow path section and a second flow path section, and a solenoid valve which can switch between an open state in which the first flow path section and the second flow path section are connected and a closed state in which the first flow path section and the second flow path section are blocked. The circulation flow path section includes a valve body accommodating section configured to include a first accommodating section and a second accommodating section which connects the first flow path section and the second flow path section in the open state, and a connection flow path section whose one end is connected to the first flow path section. The other end of the connection flow path section opens to the first accommodating section.

Abstract: A method of separating a feed stream in a distillation tower. Vapor is permitted to rise upwardly from a distillation section of the distillation tower. A feed stream is introduced into a controlled freeze zone section of the distillation tower, the controlled freeze zone section being situated above the distillation section. The feed stream is released above a level of a liquid retained by a melt tray assembly in the controlled freeze zone section. Vapor from the distillation section is directed into the liquid retained by the melt tray assembly. A solid is formed from the feed stream in the controlled freeze zone section.

Abstract: A liquid nitrogen-based cooling system features a cooling circuit and a liquid nitrogen-based heat sink. Heat absorbed by fluid flowing in the cooling circuit is subsequently absorbed by liquid nitrogen within the heat sink, which causes the liquid nitrogen to vaporize. The vaporized nitrogen is condensed back to liquid form, e.g., by means of a helium-based cryo-refrigeration system. The heat-sink includes at least a first vessel that contains the liquid nitrogen, with the cooling circuit including a series of coils passing around the first vessel in heat-exchanging contact with an exterior surface thereof so that heat can be transferred into the liquid nitrogen. The first vessel and coils may be contained within a second, outer vessel that minimizes heat transfer from the ambient environment to the fluid flowing in the cooling circuit and the liquid nitrogen within the first vessel.

Abstract: Methods and apparatus are provided for active vehicle cabin occupant protection system. The method includes detecting a vehicle cabin temperature using a cabin thermal sensor, engaging a vehicle fan and opening a vehicle outside air ventilation duct in response to the vehicle cabin temperature exceeding a first threshold temperature, and starting a vehicle engine and engaging a vehicle air conditioning system in response to the vehicle cabin temperature exceeding a second threshold temperature wherein the second threshold temperature is greater than the first threshold temperature.

Abstract: A fluid heat exchange assembly includes a fluid control module and a fluid heat exchange module, the fluid control module includes a first connecting lateral portion, the fluid heat exchange module includes a second connecting lateral portion; the first connecting lateral portion and the second connecting lateral portion are oppositely and sealingly arranged; the fluid heat exchange module includes a heat exchange core and a connecting component fixed by welding; the fluid control module includes at least a first flow passage and a second flow passage; the fluid heat exchange module includes a first fluid communication cavity, and the second flow passage is in communication with the first fluid communication cavity; the connecting component includes a connecting channel, the connecting channel penetrates through the connecting component. The fluid heat exchange assembly reduces pipeline arrangement and is of a small and compact integral structure.

Abstract: An air-conditioning system that performs a refrigeration cycle in a refrigerant circuit, includes: an outdoor unit; a plurality of indoor units; and a connection pipe disposed between the outdoor unit and the indoor units and that forms at least a refrigerant passage through which refrigerant in a gas-liquid two-phase state flows. The connection pipe includes: a branch portion that includes an indoor-side pipe group including indoor-side pipes that each communicates with any one of the indoor units, and diverges refrigerant flowing from the outdoor unit side; and a trap portion disposed in at least any one of the indoor-side pipes and is filled with refrigerant in a gas state.

Abstract: A heat exchanger assembly includes first and second heat exchangers integrated with a thermally actuated control valve assembly having first and second surfaces to which the first and heat exchangers are attached at various orientations to each other, including at 90 and 180 degrees to each other, and side-by-side. The valve assembly has two fluid ports for connection to an external fluid source, and two fluid ports in fluid communication with inlet and outlet manifolds of each heat exchanger. The heat exchangers may be a transmission oil heater and a transmission oil cooler, and the valve assembly controls the flow of transmission oil to the heat exchangers depending on the oil temperature. One or both of the heat exchangers may be brazed or mechanically secured to the valve assembly. The housing of valve assembly may be segmented, with each heat exchanger being brazed to one of the segments.

Abstract: A method for defogging a window of a vehicle includes steps of determining a risk of window fogging and automatically selecting a climate control system operating mode according to that determined risk of window fogging. The climate control system operating mode is selected from: an outside air mode, an air-conditioning mode, and a defrost mode. A controller determines the risk of window fogging according to one or more inputs, and the same or a different controller may automatically select the climate control system operating mode.