Abstract: A device for maintaining the internal temperature of a pressure vessel. The device includes a pressure vessel equipped with a main heater for heating test water to a predetermined test temperature and for maintaining the predetermined test temperature, a preheater for primarily heating the test water to the predetermined test temperature before the main heater heats the test water, and a heat exchanger including an feed pipe for feeding the test water heated by the preheater to the pressure vessel and a discharge pipe for transporting the test water discharged from the pressure vessel, in which the feed pipe is disposed inside the discharge pipe.

Abstract: A heat exchanger system includes a plurality of additively manufactured heat transfer surfaces in a plurality of sectors, a first of the plurality of sectors including a first subset of the plurality of the additively manufactured heat transfer surfaces having a characteristic different than a characteristic in a second of the plurality of sectors.

Abstract: A method for operating a refrigeration unit that includes controlling overall compressor output of the refrigeration unit having at least one state variable. The method includes operating the compressor unit either in a first mode with a first overall compressor output in which the state variable decreases or in a second mode with a second overall compressor output in which the state variable increases, wherein the first and second modes alternate. The method further includes transitioning from the second mode to the first mode when the measured state variable reaches or exceeds a first threshold, and transitioning from the first mode to the second mode when the measured state variable reaches or falls below a second threshold. The difference between the first value and the second value corresponds to the greatest of the state variable differences that result over the respective minimum duration in the first or second mode.

Abstract: A method of operating a heating and cooling system, including (1) providing a heating/cooling apparatus comprising first and second heat exchangers, (2) providing a conduit module modularly coupled to the heating/cooling apparatus and adapted to be coupled to a plurality of fluid circuits for heating and/or cooling loads, and (3) operating a control system configured to operate the conduit module in a plurality of heating and/or cooling modes. The conduit module is positioned between the heating/cooling apparatus and the plurality of fluid circuits. The conduit module includes first, second, and third supply conduits and first, second, and third return conduits, to convey first, second, and source fluids to and from respective first, second, and source fluid circuits. The conduit module includes first, second, third, and fourth three-way valves to selectively regulate flow of the first, second, and source fluids.

Abstract: An off road vehicle has an air heater with right and left shells surrounding and supporting a core, with the right and left shells connected by screws extending through ears on one of the shells into bosses on the other shell. Dual air control plates are mounted in the shell on a shaft for pivoting movement. An actuator is linked to the shaft by a swing arm with a guide pin riding in an arced slot of a drive plate rotationally secured to the shaft. The right and left shells are secured to the vehicle using a resilient compressible grommet, with a bushing extending through the grommet and a bolt extending through the bushing and attached into the frame.

Abstract: Fuel gas distribution method where residual fuel gas in a mobile fuel gas storage vessel being transported by a transport vehicle is transferred from the mobile fuel gas storage vessel to the transport vehicle for generating power. The fuel gas may be natural gas or hydrogen. The transport vehicle may be a fuel cell vehicle.

Abstract: A loop type heat pipe includes: an evaporator configured to evaporate a working fluid; a condenser configured to condense the evaporated working fluid; a vapor pipe provided between the evaporator and the condenser; and a liquid pipe provided between the evaporator and the condenser. The vapor pipe includes: a lower-side metal layer; an intermediate metal layer disposed on the lower-side metal layer; an upper-side metal layer disposed on the intermediate metal layer; a pipe conduit formed by the lower-side metal layer, the intermediate metal layer and the upper-side metal layer; and a support column that is provided inside the pipe conduit, wherein the support column divides the pipe conduit into a first flow path and a second flow path. The pipe conduit has a first opening portion that communicates with the first flow path and the second flow path.

Abstract: An air conditioning unit for a vehicle includes a first channel and a second channel, a blowing unit including a first blower fan and a second blower fan that rotate together by sharing a rotary shaft and a driving unit, a bypass channel, and a control door disposed among the outlets of the first channel and the second channel, the heating core, and the bypass channel to control air discharged from the first channel or the second channel to pass through the heating core or not to pass through the heating core through the bypass channel.

Abstract: A process for removing a foulant from a gas stream. The gas stream is cooled in a series of heat exchangers, causing a portion of the foulant to desublimate and become entrained in a cryogenic liquid. This foulant slurry stream is pressurized, cooled, and separated into a pressurized foulant solid stream and the cryogenic liquid stream. The pressurized foulant solid stream is melted to produce a liquid foulant stream. Heat exchange processes, both internal and external, are provided that close the heat balance of the process. In this manner, the foulant is removed from the gas stream.

Abstract: A heat exchanger includes a heat exchanger shell and a heat exchanger core defined by plurality of core elements releasably connected together when positioned within the heat exchanger shell. Each core element is defined by first and second opposing plates permanently fixed together with a fluid flow path formed therebetween. A coolant flow path is formed between adjacent core elements. A fluid seal positioned between adjacent core elements is configured to form a fluid tight seal between the fluid flow path and the coolant flow path.

Abstract: A method of operating an energy recovery system includes providing a flow of fresh air from an energy recovery ventilator through a supply port into a component of a heating and cooling system. Stale air is blown from the component through a return port into the energy recovery ventilator, the return port including a shield configured to at least partially prevent fresh air flowing from the supply port into the component from recirculating through the return port.

Abstract: A heat exchanger includes a liquid reservoir configured to separate a gas-liquid two-phase refrigerant flowing out of an upstream heat exchanging portion into a gas-phase refrigerant and a liquid-phase refrigerant, and a refrigerant adjustment portion configured to adjust an outflow state and an outflow destination of the refrigerant flowing out of a downstream heat exchanging portion or the liquid reservoir. The liquid reservoir includes a liquid reserving portion configured to store the liquid-phase refrigerant and a gas reserving portion configured to store the gas-phase refrigerant. The refrigerant adjustment portion faces the liquid reserving portion across the gas reserving portion.

Abstract: A heat exchanger includes crimping plates fixed to an inlet and an outlet of a duct and having frame shapes corresponding to opening shapes of the inlet and the outlet. Each of the crimping plates includes a beam connecting two different positions on an inner periphery of the crimping plate. The beam has a rib.

Abstract: A vehicle air conditioner has a bypass pipe which passes a radiator, an outdoor expansion valve, and opening/closing valves. A controller is configured to execute a heating mode to open a first solenoid valve and close a second solenoid valve, and a dehumidifying and heating mode to close the first solenoid valve, open the second solenoid valve, let a refrigerant radiate heat in an outdoor heat exchanger, let the refrigerant absorb heat in a heat absorber, and generate heat in an auxiliary heater. When changing from the heating mode to the dehumidifying and heating mode, the controller sends the refrigerant to a receiver drier, controls a compressor to reduce a difference between pressures before and after the second solenoid valve, opens the second solenoid valve, closes the first solenoid valve, shuts off the outdoor expansion valve, and shifts the compressor to control in the dehumidifying and heating mode.

Abstract: Systems and apparatuses for making ice and ejecting the ice from an ice formation cell. In one example, a system includes an ice formation cell, a refrigerant tube, and an ejector. The refrigerant tube is disposed within the ice formation cell. A portion of the water stream can freeze on the refrigerant tube to generate the ice piece. The ejector rotates about an axis. When rotating, the ejector pries an ice piece away from the refrigerant tube disposed the ice formation cell.

Abstract: A side slit of a core plate of a heat exchanger reaches a sealing surface. The core plate has a rib which is formed on a bottom plate across a protruding portion. The rib communicates to a cavity above the sealing surface. An end slit formed on an end wall of the core plate reaches the sealing surface. A first joining tab is formed between two end slits. The first joining tab is joined to a second joining tab on a reinforce plate. The side slit and the rib enable deformation of the core plate. The end slit enables deformation of the first joining tab in a tilting manner.

Abstract: In a laminated core type heat sink in which a plate is formed by arranging a plurality of slits in parallel to a metal flat plate and by laminating the plate in large numbers, the thickness of a second plate positioned second in the lamination direction from an end lid to which a semiconductor is attached is made greater than thickness of a first plate other than the second plate.

Abstract: A distributor includes a first communication flow path, a second communication flow path, and a bent portion connecting the first communication flow path and the second communication flow path. The second communication flow path includes an inner wall portion extending from the bent portion and an outer wall portion extending from the outer peripheral wall portion of the bent portion. The outer wall portion has a liquid film separation unit, which is a boundary between a relatively narrow section and a relatively wide section of the second communication flow path.

Abstract: A heat exchanger system includes an additively manufactured inlet header upstream of, and in fluid communication with, the heat exchanger core and an additively manufactured exit header downstream of, and in fluid communication with, the heat exchanger core. A method of manufacturing a header for a ducted heat exchanger system for a gas turbine engine includes additively manufacturing a header with respect to a desired airflow therethrough.

Abstract: A liquid cooler having a heat exchanger core located within a housing, the heat exchanger core secured to the housing by fastening points on the housing. The heat exchanger core having a stack of plate pairs or tubes, and the core also having ribs arranged in between the plate pairs or tubes. A cover plate with apertures is arranged on the heat exchanger core. The heat exchanger core is located within an insertion opening of the housing. An adapter rests on the cover plate in a sealing manner. The adapter includes at least one of an inlet port and an outlet port. The adapter is fastened to the housing at the fastening points, and provides a fluid connection to the apertures and the tubes or plate pairs.