Abstract: The invention provides a heat transfer composition comprising (i) from about 45 to about 75% by weight 2,3,3,3-tetrafluoropropene (R-1234yf); and (ii) from about 25 to about 55% by weight 1,1,1,2-tetrafluoroethane (R-134a). A heat transfer composition comprising, optionally consisting essentially of, (i) from about 20 to about 90% by weight R-1234yf; (ii) from about 10 to about 60% by weight R-134a; and (iii) from about 1 to about 20% by weight R-32 is also provided.

Abstract: A steam turbine unit, in particular for a steam power plant, comprising a steam turbine and a condenser connected to the steam turbine via an evaporation channel is provided. According to the following, a sound damper, particularly a low-frequency sound damper, is acoustically coupled to the evaporation channel.

Abstract: A method of integrating, optimizing and combining in a marine hybrid system, the operation of one or more variable speed high voltage direct current (HVDC) generator(s), one or more energy storage units and a combination of one or more HVDC parallel hybrid and serial hybrid propulsion systems through use of an Energy Management Computer. One aspect of the invention involves the application of logic programming to automate the optimization and the operation of the Internal Combustion Engines (ICE) so that whenever the system requires their usage, they are operated at optimum efficiency conditions. For an ICE to operate at peak efficiency a combination of a large energy storage unit used as a buffer combined with a mixture of both a serial and a parallel hybrid system is used.

Abstract: A strip seal arrangement for turbine components employs acoustic damping. A sealing plate having a front face adjacent a combustion chamber and a back face facing away from a combustion chamber configured to have one or more holes of a predefined cross-sectional area. Containers having predefined volumes are attached to the back face of the sealing plate such that the one or more holes are in fluidic communication with the one or more containers thereby creating at least one acoustic damper. The side edges of the sealing plate fit into a slots of burner front panels, creating a seal between the panels.

Abstract: A turbine exhaust case (TEC) of a turbofan aeroengine includes a mixer for mixing exhaust gases with a bypass air stream, the TEC comprising an annular hub and an annular shroud with the mixer attached to a downstream end of the shroud, the shroud and the mixer surrounding the hub to form an annular exhaust gas duct positioned radially therebetween, a plurality of deswirling struts circumferentially spaced apart with respect to a central axis of the TEC and located within an axial length of the mixer between an upstream end and a downstream end of the mixer, the deswirling struts each having a cambered profile and extending radially across the annular exhaust gas duct and interconnecting the mixer and the hub.

Abstract: Systems and methods for operating a gas turbine combustion system by generating a flame detection signal are provided. A set of modeled parameters expected when there is a flame in a secondary combustion zone is calculated. A set of measured gas turbine parameters is measured. A flame validation signal based on the set of measured parameters and the set of modeled parameters is generated. The systems include a subsystem that calculates a set of modeled parameters expected when there is a flame in the secondary combustion zone and a subsystem that measures a set of measured parameters. A subsystem generates a flame validation signal based on the set of measured parameters and the set of modeled parameters.

Abstract: A turbomachine combustor assembly includes a combustor body, and a combustor liner arranged within the combustor body. The combustor liner defines a combustion chamber having a head end and a discharge end. A plurality of combustor nozzles are arranged in an annular array at the head end of the combustion chamber, and a fluid delivery nozzle is arranged substantially centrally within the annular array at the head end of the combustion chamber. The fluid delivery nozzle includes a first end portion that extends to a second end portion through a wall portion. The wall portion includes at least one combustion chamber outlet. The fluid delivery nozzle is configured to deliver a non-combustible fluid into the at least one of the plurality of combustor nozzles and the combustion chamber.

Abstract: The present invention discloses a novel apparatus and way for reducing the recirculation zone at the inlet end of a combustor. The recirculation zone is reduced by altering the geometry of the inlet end through a tapering of the liner wall thickness and a tapering of the thermal barrier coating to reduce the bluff body effect at the combustion liner inlet end.

Abstract: A compressed-air energy-storage system, comprising: a variable-nozzle expander configured to receive an airflow at a first pressure and partially expand said airflow at a second pressure, said second pressure being lower than said first pressure, expansion of said airflow in said variable-nozzle expander producing useful mechanical power; a heat generator component configured to receive a fuel and a partially expanded airflow from the variable-nozzle expander; and a turbine configured to receive combustion gas from the heat generator component and expand the combustion gas producing useful mechanical power.

Abstract: A fuel control device and method of a gas turbine combustor, for advanced humid air turbines, in which plural combustion units comprising plural fuel nozzles for supplying fuel and plural air nozzles for supplying air for combustion are provided. A part of the plural combustion units are more excellent in flame stabilizing performance than the other combustion units. A fuel ratio, at which fuel is fed to the part of the combustion units is set on the basis of internal temperature of the humidification tower and internal pressure of the humidification tower to control a flow ratio of the fuel fed to the plural combustion units.

Abstract: The invention concerns a vortex fluid flow device comprising a vortex chamber, multiple forward flow inlets to the chamber and a reverse flow inlet to the chamber. The vortex fluid flow device is arranged such that in use there is a greater pressure drop across the device when there is reverse fluid flow than when there is forward fluid flow.

Abstract: A gas turbine engine assembly includes first and second annular members having different first and second thermal expansion coefficients connected together with dual arm V brackets. Brackets include first and second arms angularly spaced apart from a bracket centerline and extending axially away from bracket bases attached to a first one of the first and second annular members. Arms are attached to a second one of the first and second annular members. A turbine frame includes struts extending between outer and inner rings. An annular mixer and centerbody substantially made from a ceramic matrix composite materials is connected to and supported by the outer and inner rings with first and second sets respectively of the dual arm V brackets. Bracket bases of the first and second sets are attached to the outer and inner rings respectively. Arms of the first and second sets are attached to mixer and centerbody respectively.

Abstract: The invention relates to a device (1) for suspending a casing (2) of a turbine engine (3) to the structure (12) of an aircraft, characterized in that it comprises a suspension ring (4), said suspension ring (4) comprising; a plurality of attachment surfaces (33) positioned so as to protrude on the circumference of the suspension ring (4) and having attachment holes (6), for attachment to the structure (12), a circumferential flange (5) comprising a plurality of holes (35) for attaching the suspension ring (4) to the casing (2); one or several hanging surfaces (10) for hanging at least one piece of equipment (15) , positioned so as to protrude on the circumference of the suspension ring (4), and having holes (8) for hanging the piece of equipment (15) to the ring (4). The invention also relates to a turbine engine and to a propulsion assembly comprising such a device.

Abstract: A turbine rotor blade is provided. The turbine rotor blade includes a root, a platform coupled to the root, and an airfoil extending from the platform. The platform has a leading edge, a trailing edge, a suction side edge, and a pressure side edge. The pressure side edge includes a first concave portion.

Abstract: An airfoil is disclosed herein. The airfoil may include a leading edge, a trailing edge, a suction side defined between the leading edge and the trailing edge, and a pressure side defined between the leading edge and the trailing edge opposite the suction side. The pressure side may include a concave profile about the trailing edge that varies from a profile of a remainder of the pressure side.

Abstract: A turbine bucket is disclosed herein. The turbine bucket may include a platform and a shank portion extending radially inward from the platform. The shank portion may include a slash face, a radial seal pin groove formed in the slash face, and at least one cooling hole disposed in the slash face about the radial seal pin groove.

Abstract: An optical refrigerator comprises a laser source, a cooling crystal, a cavity for enhancing the absorption of the laser light in the cooling crystal, a thermal link which connects a cold finger to the cooling crystal and prevents the fluorescence from heating the cold finger, an absorbing chamber to remove the fluorescence and eliminate the waste heat, an a mechanical support that keeps the cooling crystal properly aligned with the laser beam and minimizes heat leakage.

Abstract: A cooling device, which can cause cooling or heat-pumping, comprising: multilayer electrocaloric ceramic modules as a refrigerant where said modules are comprised of modified BaTiO3 or bismuth based solid solution with PbTiO3, wherein said modules have more than one ferroelectric phase in generating an electrocaloric effect.

Abstract: A method includes pneumatically expelling a sample of magnetically polarized material along a pneumatic flow path from a cryogenic environment.

Abstract: At least one forced convection unit added to a passive heat transport system is operated during transient heat loading periods but not operated under steady state conditions for cooling and maintaining a set point temperature of a chamber or surface. Forced convection is selectively employed based on temperature data and/or set point temperature values. A reject heat transport system includes first and second reject heat sinks each coupled via main and crossover transport tubes to first and second reject heat exchangers, permitting both heat sinks to dissipate heat from first and second thermoelectric heat pumps regardless of whether the first, the second, or the first and second heat pumps are in operation.

Abstract: An article temperature control system includes an article having flexible tubing through it for circulating a heat transfer fluid and an article coupling affixed to distal ends of the flexible tubing. The article coupling releasably couples to a heat exchanger having a thermoelectric cooling/heating unit having one or more TEC plates, an aluminum heat sink, a fan and a controller in electrical communication with the TEC plates, a heat exchanger coupling adapted to releasably connect to the article coupling, an outlet line fluidly connecting the thermoelectric cooling/heating unit and the heat exchanger coupling, a return line fluidly connecting the thermoelectric cooling/heating unit and the heat exchanger coupling, a fluid block in fluid communication with the outlet and return lines, the fluid block forming a housing for the TEC plates, a pump in fluid communication with at least one of the outlet and return lines, and a power supply in electrical communication with the controller and the pump.

Abstract: A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus determines whether a skin temperature at a skin portion of a mobile device is greater than a threshold temperature. The apparatus provides power to a thermoelectric cooler (TEC) to cool a first side of the TEC while heating a second side of the TEC if the skin temperature is greater than the threshold temperature, wherein the first side of the TEC contacts the skin portion to cool the skin portion and the second side of the TEC faces a core of the mobile device.

Abstract: Disclosed is an endothermic towel which causes an endothermic reaction with moisture of a human body to remove a thermal feeling and to simultaneously dry moisture in a short time. The towel includes: a first towel member having an exothermic function; and a second towel member having a ventilating function, wherein the first and second towel members are integrated with each other by sewing edges of the first and second towel members, so that the skin temperature may be effectively dropped down, a feeling of use may be improved and the low-temperature state may be more efficiently maintained.

Abstract: A regenerative refrigerator includes: a regenerator unit that precools a working gas; and an expander that cools the working gas by expanding the working gas precooled by the regenerator unit. The regenerator unit includes a zinc based regenerator member formed of zinc or an alloy containing zinc as a main component of the alloy. A first stage regenerator optionally includes a high temperature part including a first regenerator member and a low temperature part including a second regenerator member different from the first regenerator member. A second stage regenerator optionally includes a high temperature part including a second regenerator member and a low temperature part including a third regenerator member different from the second regenerator member. The second regenerator member optionally includes a zinc based regenerator member formed of zinc or an alloy containing zinc as a main component of the alloy.

Abstract: A low-loss cryogenic fluid supply system having at least one main cryogenic fluid tank and a backup cryogenic fluid tank each having a vent set to a first pressure P1 and a pressure build circuit set to a second pressure P2, a main tank gas supply line configured to supply gas to a junction at a third pressure P3, a main tank liquid supply line configured to supply gas to the junction at a fourth pressure P4, a backup tank liquid supply line configured to supply gas to the junction at a fifth pressure P5, a backup tank backpressure regulator configured to supply gas to a point upstream to the main tank gas supply line at a sixth pressure P6, and an outlet supply line configured to supply gas from the junction at an end use pressure Pu, where P1>P3?P2, P1?P6>P2, P6?P3>P4>P5>Pu.

Abstract: An air conditioning companion stabilizer system for improving the operating cooling efficiency of refrigeration cycle components in air conditioning systems integrates the refrigeration cycle components with two independent, closed loops whose operation is complementary of one another. A temperature stabilizing loop functions in ambient conditions that lower cooling efficiency and is operative to absorb heat from the refrigerant exiting the condenser, thereby lowering the temperature of the refrigerant before it arrives at the expansion valve. A secondary loop, or charging loop operating in ambient conditions that enable optimal cooling efficiency facilitates the operation of the temperature stabilizing loop by priming a rechargeable heat absorbing component.

Abstract: An ice piece release system that includes a chilled compartment set at a temperature below 0° C., a warm section at a temperature above 0° C., and a tray in thermal communication with the chilled compartment. The tray includes a plurality of ice piece-forming receptacles and a cavity in thermal communication with the receptacles. The ice piece release system also includes a primary reservoir assembly in thermal communication with the warm section and fluid communication with the cavity of the tray. The ice piece release system further includes a heat-exchanging fluid having a freezing point below that of water, and the fluid resides in the primary reservoir assembly and the cavity of the tray. The primary reservoir assembly is further adapted to move at least a portion of the heat-exchanging fluid in the reservoir assembly into the cavity.

Abstract: Temperature sensors detect an outdoor air temperature and a heat exchanger temperature of an outdoor unit, and a human detection sensor detects presence of a person in an air blowable region of each indoor unit. A control section selectively executes a first defrosting operation mode in which a defrosting operation is performed while fans of all the indoor units are stopped, and a second defrosting operation mode in which, when a frost formation amount in the heat exchanger is estimated to exceed a threshold value on the basis of the temperatures detected by the first and second temperature sensors, the indoor unit for which the human detection sensor detects no person in its air blowable region is preferentially selected, and a defrosting operation is performed while the fan of the indoor unit is forcibly operated. Such an air conditioning system and a defrosting operation method reduce time required for defrosting.

Abstract: An automatically adjustable swing seal for a rack-aisle freezing and chilling system extends, for example, from the top horizontal frame member of a racking structure and defines an intake opening along with side seals and a bottom seal. The swing seal is positioned at a height such that a product stack having a top edge positioned at any point along the face of the swing seat creates a seal between the intake opening and the stack via the swing seal, the side seals, and the bottom seal. Thus, stacks of varying heights may automatically be accommodated. Further, the bottom edge of the swing seal may be beveled, such that if a product stack is not evenly stacked a portion of the uneven stacking will not catch against the swing seal when the stack is pulled away from the opening.

Abstract: An air-conditioning apparatus includes a refrigerant circuit formed by connecting a compressor that discharges a zeotropic refrigerant, an outdoor-side heat exchanger that exchanges heat between outside air and the refrigerant, a first expansion device that regulates the pressure of the refrigerant, and a load-side heat exchanger that exchanges heat between the air in an air-conditioning target space and the refrigerant. The air-conditioning apparatus includes a controller that has a composition computing function unit and a composition determining function unit The composition determining function unit is configured to adopt a predetermined value set in advance and related to composition as a circulating composition if the computation result is determined as incorrect, and adopt the computation result as the circulating composition if the computation result is determined as correct.

Abstract: A motor control device includes a PWM signal generation unit generating a signal pattern of two of three phases so that the pattern follows a rotor position, and a timing adjusting unit. The signal generation unit increases/decreases duty in both directions of lag side and lead side based on any phase of a carrier-wave period regarding a first phase. The signal generation unit increases/decreases duty in one direction regarding a second phase. The signal generation unit increases/decreases duty in a direction opposite to the second phase regarding a third phase. The timing adjusting unit adjusts detection timing so that a current detection unit detects current in fixed timing with respect to one phase and current in another fixed timing with respect to the other phase or the current detection unit is capable of detecting current in variable timing according to magnitude of output voltage to an inverter circuit.

Abstract: In a refrigeration cycle system, switching is allowed between a parallel operation mode and a series operation mode. In the parallel operation mode, a refrigerant, upon leaving a load side heat exchanger, parallelly flows through a high-pressure side passage of each of a first internal heat exchanger and a second internal heat exchanger and then flows into an expansion valve. In the series operation mode, the refrigerant, upon leaving the load side heat exchanger, flows through the high-pressure side passage of the first internal heat exchanger, further flows through the high-pressure side passage of the second internal heat exchanger, and then flows through a high-pressure side bypass pipe into the expansion valve.

Abstract: The invention relates to a system that is functionally associated with a refrigeration unit (1), said system comprising a primary tank (6) for the inflow of the water to be treated, and an inner tank (7) for cooling and mixing the water. Said tank (7) contains an exchanger (13) through which the liquid gas from the refrigeration unit (1) is passed, at the same time as the water entering the primary tank (6) accesses the cooling and mixing tank (7) from the primary tank, said cooling and mixing tank comprising water suction tubes (23) that converge in a three-way valve (25) connected to a water recirculation pump (15) via which the water is driven inside the exchanger (13). The treated water leaves via an outflow line (27).

Abstract: An engine driven heat pump is such that when a self-sustaining switch is turned on during power failure, and a self-sustaining signal is received, it switches to a self-sustaining mode and start an engine and a generator, and when output power from an inverter is received, it supplies the output power to a power supply circuit and a battery charging circuit by means of an independent power supply relay, and it supplies the output power to the outside via an independent output unit, and during the supply of the output power, it maintains cutoff with respect to connection between a system, and the power supply circuit and the battery charging circuit by means of a system cutoff relay and maintain the output of the output power until the self-sustaining signal is interrupted, and it recovers the connection when power is restored and the output power is interrupted.

Abstract: Provided is an air-conditioning/hot-water supply system having high operational efficiency. An internal heat exchanger (15) has: a primary heat transfer pipe (15a) for forming a part of the annular circuit of a refrigerant circuit (10) for air conditioning; and a secondary heat transfer pipe (15b) connected to piping (P) branched from the annular circuit through a pressure reduction device (16). The pressure reduction device (16) reduces the pressure of a first refrigerant flowing therein from the piping (P) depending on an operation mode and causes the first refrigerant, the pressure of which has been reduced, to flow toward the secondary heat transfer pipe (15b), thereby cooling the first refrigerant flowing through the primary heat transfer pipe (15a).

Abstract: A boiling refrigerant type cooling system to suppress overshoot upon start of heat generation and realize stable start of boiling. In the boiling refrigerant type cooling system, a metal boiling heat transfer unit has a base in thermal contact with a heat generating body. The boiling heat transfer unit is in contact with a liquid refrigerant. The boiling heat transfer unit has plural parallel tunnels communicating with the outside via holes or gaps under its surface, a groove deeper than a tunnel diameter formed through all the tunnels in an orthogonal direction to the tunnels, and a cover plate on the groove.

Abstract: An air conditioner including a door installed in order to provide a smooth appearance by hiding an outlet is provided. The air conditioner is installed on a wall and includes a front panel including a first panel part provided with an inlet and a second panel part connected to a lower portion of the first panel part and provided with an outlet; a lower panel connected to the second panel part of the front panel and extended toward the wall; and a door installed on a front surface of the second panel part so as to open and close the outlet while being slid, wherein the door is slid along a curved movement trajectory toward the lower panel, and a curvature of the movement trajectory is changed. A clean and smooth appearance may be formed using a door slid along a curved path and a slim appearance may be formed even in the state in which the door is opened.

Abstract: A refrigeration device includes a compressor, an outdoor heat exchanger, an expansion mechanism, an indoor heat exchanger, and a storage tank. The compressor, the outdoor heat exchanger, the expansion mechanism and the indoor heat exchanger are connected to each other. During a cooling operation, a refrigerant flows sequentially through the compressor, the outdoor heat exchanger, the expansion mechanism, and the indoor heat exchanger. During a heating operation, the refrigerant flows sequentially through the compressor, the indoor heat exchanger, the expansion mechanism, and the outdoor heat. The storage tank is configured to store the refrigerant and is provided between the outdoor heat exchanger and the expansion mechanism. The refrigeration device uses R32 as the refrigerant. A capacity of the outdoor heat exchanger is less than or equal to a capacity of the indoor heat exchanger.

Abstract: An outdoor unit includes a casing having a bottom plate and is configured such that at least a part thereof is made of metal, a compressor provided within the casing to compress a flammable refrigerant, an outdoor heat exchanger provided within the casing to exchange heat between the refrigerant and outside air, and an electric heater provided on an upper surface of the bottom plate. The power consumption of the electric heater is 250 W or less.

Abstract: An air-conditioning system for a vehicle includes a switching heat exchanger. The switching heat exchanger includes a heat exchanger core, a receiver tank, and a switch valve. The switch valve may be arranged between the heat exchanger core and the receiver tank to control the flow of refrigerant. A controller can be configured to control the switch valve in an access position during a cooling mode and a bypass position during a heating mode. In the access position, the heat exchanger core is in communication with the receiver tank such that the refrigerant flows from a primary region of the heat exchanger core to the receiver tank. In the bypass position, the heat exchanger core is in communication with its outlet such that the refrigerant from the primary region flows out from the switching heat exchanger.

Abstract: A first switching device includes a first and second inputs connected to first and second power lines, respectively, the first and second power lines for receiving a first voltage. The first switching device selectively connects and disconnects the first and second inputs to and from first and second nodes, respectively. A second switching device includes a third input connected to the first node, includes a fourth input connected to a third power line, and includes a first output connected to a first end of a stator winding. A third switching device includes a fifth input connected to the second node and includes a sixth input connected to a fourth power line, the third and fourth power lines for receiving a second voltage that is less than the first voltage. The third switching device further includes a second output connected to a second end of the stator winding. A compressor crankcase heating control module controls the second and third switching devices to control compressor crankcase heating.

Abstract: Regarding an engine driven heat pump in which an engine, a compressor, a refrigerant circuit, and a generator are stored in a main body package, an engine actuation battery to actuate the engine, a battery charging circuit to charge the engine actuation battery, and an inverter to convert output power from the generator into a predetermined voltage and a predetermined frequency are stored in a separate body package, which is a separate body with respect to the main body package, and a front surface and a back surface of the separate body package is made up of an area in such a manner as to fit in a side surface of the main body package, and the separate body package is provided on a side surface near to the generator, out of side surfaces of the main body package and supported by the main body package.

Abstract: A sheet conveyor includes a first conveyance belt, a second conveyance belt, a first driving roller, a second driving roller, a first gear, and a second gear. In switching between sandwich and separation states, an axial center of a rotation shaft of the first or second gear moves on a movement plane substantially perpendicular to a direction in which the first conveyance belt and the second conveyance belt convey a sheet. Where L represents diameter of a tooth edge circle of the second gear in unit of millimeter and T1 represents a chordal tooth thickness of the second gear, an acute-side angle ? in unit of degree (°) formed by the movement plane and an interaxial-center plane including the axial center of the rotation shaft of each of the first gear and the second gear in the sandwich state is within a range represented by the following Formula 1: Tan?1(2×T1/L)<|?|<45°.

Abstract: A portable cooler is provided that includes a base that supports a refrigeration unit. The base also supports a plurality of upwardly-extending support poles that accommodate a top portion. The support poles, top portion, and base define a food storage volume that is surrounded by a plurality of insulative walls.

Abstract: A Vuilleumier heat pump is disclosed in which hot and cold displacers are controlled by first and second electromagnetic actuators, respectively. The first actuator is capable of moving the hot displacer between the first and second ends of travel while the cold displacer remains stationary and the second actuator is capable of moving the cold displacer while the hot displacer remains stationary. Prior art crank arrangements are unable to provide dwell in one displacer while moving the other displacer. Actuation of the displacers according to embodiments of the present disclosure provides a higher coefficient of performance than crank arrangements.

Abstract: A method for charging and discharging a heat accumulator is provided. A system by which the method can be performed is also provided. By means of the heat accumulator, it is possible to convert overcapacities of wind turbines, for example, into a charging circuit as heat in the accumulator by a compressor. If necessary, electricity can be stored into the network by a turbine and a generator, wherein the heat accumulator is discharged. The charging circuit and the discharging circuit are operated by a Rankine cycle, wherein for example river water is available as a reservoir for heat exchangers in order to cause evaporation of the working medium in the charging circuit and condensation of the working medium in the discharging circuit.

Abstract: The invention provides the first-type absorption heat pump with multi-terminal heat supply which belongs to the area of low-temperature waste heat utilization and refrigeration technique. It mainly comprises a generator, the first absorber, the second absorber, an absorption-evaporator, a condenser, a evaporator, a throttle, a solution pump or the second throttle, the first solution pump, the second solution pump, the first solution heat exchanger and the second solution heat exchanger. The second absorber provides solution for generator. The generator provides solution for the first absorber. The first absorber provides solution for the absorption-evaporator. The absorption-evaporator provides solution for the second absorber. The generator provides the refrigerant vapor for condenser. The condenser provides the refrigerant liquid for evaporator. The evaporator provides respectively the refrigerant vapor for the first absorber and the absorption-evaporator.

Abstract: The present application thus provides an expansion device for a refrigeration system. The expansion device may include a multi-way valve with an inlet port, a number of outlet ports, and a selectable valve member movable between a number of open positions related to the outlet ports and a closed position, and a number of capillary tubes in communication with the outlet ports.

Abstract: Plate-like fins have notches longer than a longitudinal axis of flat tubes that are placed in the notches. The plate-like fins also have bend portions that are located on projections projecting toward the edges more than the ends of the flat tubes, are formed by bending part of the plate-like fins, erect in a stacking direction in which the plate-like fins are stacked, and are in contact with adjacent ones of the plate-like fins. The height of the bend portions in the stacking direction is the length of a predetermined spacing.

Abstract: A liquefier for a heat pump includes a liquefier space and a process water tank. The process water tank is arranged within the liquefier space such that it is substantially surrounded by liquefied working fluid. A wall of the process water tank, however, is spaced from a wall of the process water tank so that a gap formed to communicate with the region of the heat pump in which compressed gas is present is obtained, so that the process water tank is thermally insulated from the space for liquefied working fluid via this gas-filled gap. The liquefier itself may also be surrounded by the gas region, in order to provide for inexpensive insulation of the liquefier.