Abstract: This air-conditioning unit includes a heat exchanger that exchanges heat between air and a coolant, a blower, and an air outflow part. The heat exchanger includes a plurality of tubes in which the coolant flows, an inlet header, an outlet header, and a fin. The inlet header includes: a low-temperature-side coolant inflow part into which coolant that has a relatively low temperature can flow; and a high-temperature-side coolant inflow part into which coolant that has a relatively high temperature can flow. The low-temperature-side coolant inflow part and the high-temperature-side coolant inflow part are offset from each other in the direction of the flow of air that passes through the heat exchanger and in an intersecting direction that intersects the direction of the flow of air.

Abstract: A heat exchanger according to an embodiment of the present disclosure includes a housing, a gas inflow pipe configured to flow exhaust gas in the housing and a gas exhaust pipe configured to discharge the exhaust gas to the outside of the housing, a cooling water inflow pipe configured to flow cooling water in the housing and a cooling water outflow pipe configured to flow out the cooling water heat-exchanged with the exhaust gas to the outside of the housing, a plurality of tubes extending in the housing in the longitudinal direction of the housing and through which the cooling water flowing therein through the cooling water inflow pipe flows, and a plurality of baffles which are installed in the housing to insert the plurality of tubes thereinto and which are spaced apart from each other by a predetermined distance and are disposed, in which the baffle may be a first curved part configured to extend to be rounded with a first curvature, a first straight part configured to extend linearly from one end part o

Abstract: The shell-and-tube heat exchanger with semicylindrical tubes includes a shell, an inlet tube sheet received within the shell, and an outlet tube sheet received within the shell. The inlet tube sheet divides the interior of the shell into an inlet plenum and a heat exchange region, and the outlet tube sheet further divides the interior of the shell into an outlet plenum and the heat exchange region. A plurality of tubes are received in and extend across the heat exchange region within the shell. Each of the tubes has an inlet end and an outlet end respectively mounted within corresponding openings formed through the inlet and outlet tube sheets. Each of the tubes is in fluid communication with the inlet plenum and the outlet plenum, and each of the tubes has a semicylindrical shape.

Abstract: The water-conserving liquid ring vacuum pump system receives the output from a water ring vacuum pump, removes the air and contaminants from the water, and returns the clean water to the make-up water port on the pump, thereby saving most of the water that would normally be discarded. Friction in the pump also heats the water, so the system is designed to cool the water as well.

Abstract: A heating, ventilation, and/or air conditioning (HVAC) system including a baffle disposed vertically adjacent to a heat exchanger, and a method for controlling the flow of a refrigerant leak are provided. The baffle may direct at least a portion of a refrigerant leak toward a refrigerant detection assembly. The refrigerant detection assembly may include a nondispersive infrared (NDIR) sensor. The baffle may include a fishbone configuration or a helical configuration. The baffle may direct substantially all of the refrigerant leak away from a control box, which may include at least one potential ignition source (e.g., an electrical component, such as a contactor). When the heating, ventilation, and/or air conditioning (HVAC) system utilizes a flammable refrigerant, the baffle may help mitigate potential ignition of the flammable refrigerant.

Abstract: A heat exchanger includes: a first heat transfer tube; a second heat transfer tube; and a branching tube having a first end connected to an end of the first heat transfer tube, a second end connected to an end of the second heat transfer tube, and a third end, and connecting the first end, the second end, and the third end to each other. The first heat transfer tube is larger in heat exchange quantity than the second heat transfer tube. The branching tube has a first flow path connecting the first end with the third end, and a second flow path connecting the second end with the third end. The first flow path is shorter than the second flow path. The branching tube includes: a U portion; and an inflow portion having an end connected to the U portion.

Abstract: The invention relates to a method of using an indirect heat exchanger comprising a plurality of heat exchange modules arranged in a rectangular grid. Each heat exchange module comprises a plurality of first and second fluid flow channels extending in a first and second direction. The indirect heat exchanger comprises first and second manifolds fluidly connecting the first and second fluid flow channels of one heat exchange module with the first and second fluid flow channels of adjacent heat exchange modules thereby forming one or more first fluid paths. The invention also relates to a facility for processing liquefied natural gas including at least one indirect heat exchanger as described above.

Abstract: A plate heat exchanger arrangement includes a plate pack and an outer casing surrounding the plate pack. At least one partition plate is arranged between the heat exchange plates of the plate pack, which divides the plate pack to the separate plate pack parts. The plate heat exchanger arrangement is provided with inlet and outlet connections for each plate pack part which are arranged to connect the inner parts of the plate pairs of said plate pack part. A connection pipe is arranged inside a flow passage of the plate pack part between the end plate of the outer casing and the partition plate such that a first end of the connection pipe is attached to the partition plate to form a connection to the flow passage of the plate pack part and a second end thereof extends through an end plate of the outer casing.

Abstract: An internal heat exchanger for an air conditioning system of a vehicle having an intermediate portion and two end portions, each of the end portions includes a first opening for the passage of a first conditioning fluid inside the internal heat exchanger and a second opening for the passage of a second conditioning fluid inside the heat exchanger. The intermediate portion is hollow, defines an inner volume, and includes inner conduits housed inside the inner volume extending between the end portions. The first openings are fluidically connected via respective connecting conduits to each of the inner conduits and the second openings are fluidically connected to the inner volume via an individual conduit.

Abstract: A heat exchanger for cooling high temperature components of a circuit board is disclosed. The heat exchanger may comprise a housing including a coolant inlet, a coolant outlet, a first side wall, a second side wall, and an upper housing portion assembled with a lower housing portion. The heat exchanger may further include a first array of plates on the upper housing portion, and a second array of plates on the lower housing portion extending parallel to and interleaved with the first array of plates. Each of the plates may have an aperture that is laterally and vertically opposed to the aperture of an immediately adjacent plate. The interleaving first and second arrays of plates may create a lateral and vertical serpentine fluid flow path.

Abstract: An environmental control system is provided including a ram air circuit having a ram air duct and at least one heat exchanger arranged within the ram air duct. The ram air duct is curved about a ram axis. A compression device includes a compressor and at least one turbine operably coupled by a shaft rotatable about a shaft axis. The ram axis is arranged coaxially with the shaft axis.

Abstract: A heat exchanging unit exchanges heat between a fluid to be heated and exhaust gas. The heat exchanging unit includes a heat exchange portion, a header portion, and a flow changing portion. The heat exchange portion includes a heat exchange pipe in the interior of which the fluid to be heated flows. The header portion is connected to the heat exchange pipe, the header portion allowing the fluid to be heated to flow from the header portion to the heat exchange pipe or from the heat exchange pipe to the header portion. The flow changing portion changes the state of flow of the exhaust gas introduced into the heat exchange portion.

Abstract: A heat exchange device may include a first pipe including a first inlet, a first outlet, and a first sidewall extending therebetween; a second pipe including a second inlet, a second outlet, and a second sidewall extending therebetween; and a plurality of dimples extending between the first sidewall and the second sidewall. The second sidewall may surround and extend about the first sidewall, the first sidewall may define a first fluid passage configured to permit flow of a first fluid, and the second sidewall and the first sidewall may define a second fluid passage configured to permit flow of a second fluid.

Abstract: A heat exchanger including a plurality of heat exchanger plates in a stacked arrangement. At least two counterflow sections are positioned adjacent each other. The counterflow sections comprise an intermediate section of each heat exchanger plate. The heat exchanger plates configured to transfer heat between a first fluid and a second fluid flowing in an opposite directions from the first fluid through a respective heat exchanger plate. At least one tent section is positioned on each end of each counterflow section. The tent sections are configured to angle the flow direction of the first and second fluids in the tent sections relative to the flow direction in the counterflow sections. A wall is positioned between each tent section and each counterflow section configured to provide a load path at opposite ends of the heat exchanger to oppose forces due to pressure on the tent sections.

Abstract: An arrangement for the recycling of carbon and hydrocarbon compounds from organic input material is provided. The arrangement includes: a reactor comprising a chamber that is limited by a jacket and upper and lower end-wall sections, gas inlet means for the supply of heated inert gas to the input material, whereby the gas inlet means is connected in a manner that transfers gas to a gas emission source, and gas outlets for leading the gas out of the chamber, where the gas outlet means comprises openings through which gas flows intended to supply the gas into the chamber, whereby the openings through which gas flows are arranged such that a fall in pressure is generated during the supply of gas that exceeds the fall in pressure of the gas during passage through the input material that has been introduced into the chamber. A corresponding method is also described.

Abstract: According to an embodiment of the invention, a process for substantially completely removing sulfur dioxide and ammonia from a gas stream is disclosed. The process involves lowering the vapor pressure in a scrubber by contacting the gas stream with one or more streams of re-circulating chilled media. The process further involves adjusting the pH of the process solution in the scrubber to within a predetermined range. The lowering of the vapor pressure and pH adjustment results in an increase in the solubility of sulfur dioxide and ammonia in the process solution thereby facilitating a substantially complete removal of sulfur dioxide and ammonia from the gas stream.

Abstract: A heat exchanger including a plurality of tubes, a header, and a plurality of flow voids. The plurality of tubes extends in a first direction through which a first fluid is configured to flow. Each of the plurality of tubes have waves that repeat at regular intervals along the first flow direction and are spaced from one another vertically and laterally in the second direction. The header extends in the first direction and is attached to each of the plurality of tubes. The header is configured to convey the first fluid to each of the plurality of tubes. The plurality of flow voids are formed between the plurality of tubes. The plurality of flow voids extend in a second direction through which a second fluid is configured to flow such that the second fluid is in thermal contact with the plurality of tubes.

Abstract: A microchannel evaporator includes a plurality of microchannels. Each of the plurality of microchannels includes a first end and a second end. A first end-tank is coupled to each first end of the plurality of microchannels and a second end-tank is coupled to each second end of the plurality of microchannels. An inlet is coupled to the first end-tank for receiving a fluid into the microchannel evaporator and an outlet is coupled to the second end-tank for expelling the fluid from the microchannel evaporator. Each microchannel of the plurality of microchannels is substantially U-shaped.

Abstract: A heat source device includes a heat medium channel through which a heat medium flows, a plurality of refrigerant circuits through which refrigerant circulates, and a plurality of heat-medium heat exchangers configured to cause heat exchange to be performed between the heat medium in the heat medium channel and the refrigerant in the refrigerant circuits. The plurality of heat-medium heat exchangers include a first heat-medium heat exchanger to which at least one of the refrigerant circuits is connected and a second heat-medium heat exchanger to which a greater number of the refrigerant circuits are connected than to the first heat-medium heat exchanger.

Abstract: A supporting beam arrangement (14) for supporting a flue gas duct (10) to a support frame (16) of the flue gas duct. The supporting beam arrangement comprises two horizontal first supporting beams (18) that are parallel and on two opposite sides of the flue gas duct (10) and separated by a distance from the flue gas duct, and further are connected to the support frame (16). The supporting beam arrangement (14) comprises a horizontal second supporting beam (20) defining two opposite ends (22) that are supported to the first supporting beams (18), the second supporting beam extending through the flue gas duct (10) that is supported to the second supporting beam. At least one or each one of the first supporting beams comprises an opening (24), in which opening one of the two opposite ends (22) of the second supporting beam is placed to rest on the first supporting beam (18). A power boiler (50) comprises the supporting beam arrangement (14), the flue gas duct (10) and the support frame (16).

Abstract: A heat exchanger includes a central body with a first set of channels and a second set of channels extending along a main direction through the central body, wherein, in the central body, in any cross-section across the main direction, the channels of the first and second sets form a checkered pattern in said cross-sections, wherein the heat exchanger further includes two inner transition portions, wherein, in respective inner transition portion, among the rows extending along a first direction, are every second, counted along a second direction, row provided with channels being along the main direction increasingly shifted in position in a first direction relative to the other channels such that the checkered pattern of channels is transformed into a line pattern.

Abstract: A heat transfer segment for a curved heat exchanger, wherein the heat transfer segment comprises a plurality of enclosure bars that at least partially define two opposite ends of the heat transfer segment, wherein the two opposite ends define respective general planes, characterised in that: the enclosure bars are shaped and arranged such that the general plane of one end of the heat transfer segment is not parallel with the general plane of the other end of the heat transfer segment, such that when said heat transfer segment is joined to an adjacent heat transfer segment in an end-to-end fashion the enclosure bars the heat transfer segment may join to corresponding enclosure bars of the adjacent heat transfer segment.

Abstract: A condenser covering device for an air conditioner condensing unit includes a panel that is shaped and sized complementarily to an upper surface of a condenser unit. A hinge is coupled to and extends between a perimeter of the panel and the condenser unit. A panel magnet is coupled to the panel proximate to the perimeter. The panel magnet is configured to magnetically couple to the upper surface of the condenser unit to couple the panel to the condenser unit to cover the upper surface of the condenser unit.

Abstract: A system and a method for heating source fluid, comprising: a turbine-electric generator transport comprising: an inlet plenum and an exhaust collector; a turbine connected to the inlet plenum and the exhaust collector; and an electric-generator coupled to the turbine; an exhaust heat recovery transport comprising: a combustion air connection coupled to the inlet plenum; an exhaust air connection coupled to the exhaust collector; a heat transfer assembly coupled to the exhaust air connection; and a fluid system coupled to the heat transfer assembly; an inlet and exhaust transport comprising: an air inlet filter housing coupled to the combustion air connection; and an exhaust stack coupled to the exhaust air connection.

Abstract: A liquid desiccant air-conditioning system provides a uniform liquid desiccant flow distribution and wetting out of membranes used in the membrane-modules of the system.

Abstract: A radial flow turbine heat engine includes a compressor, a recuperator, a combustor and a turbine. A compressor outlet manifold collects compressed gas from the compressor through a plurality of compressor outlets. A turbine inlet manifold supplies combustion gas to the turbine through a plurality of turbine inlets. The compressor outlet manifold comprises a plurality of compressor outlet manifold ducts and the turbine inlet manifold comprises a plurality of turbine inlet manifold ducts. These manifold ducts are circumferentially interdigitated with respect of each other around the shaft of the turbine to provide a flow path for compressed gas through the recuperator located radially inwardly with respect to the rotation axis of the shaft compared to the flow path for the combustion gas in the hot side portion of the heat engine.

Abstract: A cooling system comprises a compressor, a condenser, an expansion valve, and a heat exchanger. The latter comprises a vessel for containing a refrigerant, the vessel having an inner space bounded by a closed surface of a vessel wall, the vessel comprising an inlet and an outlet for transport of refrigerant into and out of the inner space through the vessel wall. A tube is disposed at least partly inside the inner space, wherein a first end of the tube is fixed to a first orifice of the vessel wall and a second end of the tube is fixed to a second orifice of the vessel wall to enable fluid communication into and/or out of the tube through the first orifice and the second orifice. A pressure control means controls a pressure in the inner space based on a target temperature.

Abstract: A combined cycle power plant and method for operating a combined power plant with stack energy control are presented. The combined cycle power plant includes a gas turbine, a heat recovery steam generator including a plurality of heating surfaces, and a steam turbine. The heating surfaces may be partially bypassed to reduce steam production in the heat recovery steam generator during power plant startup. Less energy may be extracted from exhaust gas of the gas turbine. More energy may be dumped through an exhaust stack. The steam turbine may start without restriction of a gas turbine load during power plant startup. The steam turbine may start without increasing a size of an air cooled condenser while maintaining a higher load of a gas turbine during power plant startup.

Abstract: A flexible manifold adapted for use on a plate-fin heat exchanger core, the flexible manifold comprising a plurality of individual layers, each individual layer defining a lower floor, an upper floor, and two side walls. Each of the plurality of individual layers is adapted to channel a flow of a medium therethrough, each of the plurality of individual layers includes a plurality of vertical members, each of the plurality of vertical members extends vertically from the lower floor to the upper floor of the respective individual layer, and each of the plurality of vertical members is configured to provide structural support for the respective individual layer. The vertical members can be vertical guide vanes and/or vertical columns having a round and/or hydrofoil cross-sectional shape.

Abstract: The present disclosure provides a liquid-cooling type double-sided cooler, including a first cooling portion and a second cooling portion. In the liquid-cooling type double-sided cooler, another end of the first cooling portion is formed with a first communication hole that is configured to penetrate the first cooling liquid path and an outside of the first cooling portion, another end of the second cooling portion is formed with a second communication hole that is configured to penetrate the second cooling liquid path and an outside of the second cooling portion; and the first cooling portion and the second cooling portion are positioned such that the first communication hole and the second communication hole face each other, and the first cooling liquid path and the second cooling liquid path are connected with each other.

Abstract: A heat transfer plate that has a base plate; a fluid distribution plate that is arranged on a first end section of the base plate, and a fluid collection plate that is arranged on a second end section of the base plate, the fluid distribution plate comprising a base edge that faces a heat transfer section of the base plate, a distal part that is located at a distance from the base edge, a fluid passage edge that comprises an extension in a direction from the base edge, towards the distal part, a closed edge that comprises an extension in the direction from the base edge, towards the distal part, and fluid distribution channels that extend from the fluid passage edge to the base edge, for leading fluid from the fluid passage edge to the heat transfer section.

Abstract: Described herein are embodiments of a top cover for an outdoor HVAC unit. The top cover may comprise a dome-shaped top surface; outer edges surrounding the dome-shaped top surface; at least one ventilated grille disposed between the outer edges and the outdoor unit; and a plurality of channels configured to drain water from the dome-shaped top surface and away from the at least one ventilated grille.

Abstract: The invention relates to a heat transfer device with channels for heat-absorbing media and channels for heat-emitting media, at least one of the channels having a textile structure with compressed and non-compressed regions. Whilst the compressed regions are disposed in the transition regions between the channels in order to improve the heat transfer to or across the channel wall, the non-compressed regions are disposed in the flow regions of the channels. This construction enables a large heat transfer to the heat transfer surface with simultaneously good heat conduction from the heat transfer surface to the separating surface. The invention likewise relates to heat exchangers with heat transfer devices of this type.

Abstract: A heat exchange assembly in an air to air heat exchanger includes an arrangement, construction, and/or configuration of a combination of latent heat exchangers and sensible heat exchangers. The heat exchange assembly can minimize footprint required for the air to air heat exchanger, e.g. air handler, by avoiding the need for block offs and plenums, can support direct mounting of a bypass damper(s), can provide acceptable pressure drop ratings and provide good heat exchange efficiency and energy recovery performance. The arrangement and configuration of the sensible heat exchangers and latent heat exchangers of the heat exchange assembly have condensate management for example to provide frost protection.

Abstract: An exhaust heat recovery device including a heat exchange portion, an exhaust branch portion, and an exhaust distribution portion, wherein the heat exchange portion comprises a pillar-shaped honeycomb body having a first end face and a second end face, and a casing accommodating the honeycomb body, the exhaust branch portion has a branch path that branches a path of exhaust gas flowing into the honeycomb body into a central portion and an outer circumferential portion in a cross-section orthogonal to an axial direction of the honeycomb body, and the exhaust distribution portion has an exhaust distribution mechanism that adjusts a heat recovery amount by changing an airflow resistance of the path of the exhaust gas in the central portion of the honeycomb body and varying the exhaust amount passing through the path of the exhaust gas in the outer circumferential portion of the honeycomb body.

Abstract: A refrigerant heat exchanger is provided and includes: a hollow container having a cylindrical shape; a plate stack disposed on an inner lower side of the hollow container, including plates each having a front side and a back side with a plurality of concavo-convex portions formed thereon which are stacked to form a first heat exchange flow passage through which a first refrigerant flows and a second heat exchange flow passage through which a second refrigerant flows; a supply pipe disposed in an interior space of the hollow container above the plate stack and configured to supply the first refrigerant to the plate stack; and a discharge pipe configured to exchange heat between the first refrigerant supplied from the supply pipe and the second refrigerant flowing through the plate stack and to discharge the first refrigerant.

Abstract: Methods and apparatus for an enteral feeding pump system. A method of directing flow for a coil includes drawing fluid from a source and delivering fluid, the coil including input and output check valves to prevent a back flow of fluid.

Abstract: The present invention relates generally to a manifold for a parallel flow heat exchanger and a heat exchanger incorporating that manifold. The manifold comprising a first plurality of channels each having a first opening facing a first direction and a second opening facing a second direction different from the first direction. The manifold further comprises a second plurality of channels interleaved with the first plurality of channels, the second plurality of channels having a third opening facing a third direction and a fourth opening facing the first direction, wherein the third direction is different from the first direction and the second direction.

Abstract: A transduct segment, that can include a main tube extending from a first end to a second end and defining a hollow passageway therethrough, a lower platform attached to an outer surface of the main tube on first side of an aperture defined within the main tube, and an upper platform attached to the outer surface of the main tube on second side of the aperture that is opposite of the first side, is provided. The upper platform is integral with the lower platform to define a supply channel therebetween, and the supply channel is in fluid communication with the hollow passageway of the main tube through the aperture defined by the main tube. The lower platform and the upper platform define an interface defining a plurality of channels in fluid communication with the hollow passageway defined by the main tube.

Abstract: Various methods and systems are provided for an exhaust gas recirculation cooler including a plurality of cooling tubes. In one example, an exhaust gas recirculation (EGR) cooler includes a plurality of cooling tubes positioned within a housing of the EGR cooler, each cooling tube of the plurality of cooling tubes extending between and directly coupled to tube sheets of the EGR cooler at ends of each cooling tube, where at least one end of one or more cooling tubes of a first portion of the plurality of cooling tubes, inward of a tube sheet coupled to the at least one end, includes a compliant region, where the first portion is positioned proximate to an exhaust inlet of the EGR cooler.

Abstract: A refrigerator (2) comprising a refrigeration system (4) being at least intermittently flowed through by a refrigerant and a first compartment (6) cooled by the refrigeration system (4) is provided. System components comprise a single compressor (10), a condenser (12), a first expansion arrangement (14), a second expansion arrangement (16), a first evaporator (18), and a sub-cooler (20) comprising a first refrigerant channel (22) and a second refrigerant channel (24). The refrigeration system (4) comprises a first conduit path (26) and a second conduit path (28), the first conduit path (26) comprising the first refrigerant channel (22), the first expansion arrangement (14), and the first evaporator (18), and the second conduit path (28) comprising the second expansion arrangement (16) and the second refrigerant channel (24). A flow control device (30) for alternately directing refrigerant through the first conduit path (26) and the second conduit path (28) is arranged in the refrigeration system (4).

Abstract: A heat exchanger core assembly includes a frame assembly and a plurality of core bundles positioned within the frame assembly. Each core bundle includes at least one row of tubing defining at least one end of the core bundle, an edge seal gasket to seal the core bundle from an adjacently placed core bundle, and an indoor face seal gasket to seal the end with respect to the frame assembly. A method of replacing a core bundle of a heat exchanger core assembly includes identifying a core bundle requiring replacement, removing the core bundle by accessing the core bundle and sliding the core bundle with respect to the remaining plurality of core bundles from the frame assembly, and inserting a replacement core bundle in a space defined by the removed core bundle.

Abstract: The invention relates to a method for cleaning a plate heat exchanger, in which method the plate pack (2) of the plate heat exchanger is removed from the outer casing, the plate pack (2) is stretched in its longitudinal direction so that the spaces between the plates of the plate pack increase, and then the plate spaces of the plate pack are cleaned.

Abstract: An annular heat exchanger for a gas turbine engine is provided. The annular heat exchanger can include a first annular ring comprising a first main tube defined by a plurality of transduct segments; a second annular ring comprising a second main tube defined by a plurality of transduct segments and a curvilinear plate defining at least one channel therein that is in fluid communication with a transduct segment of the first main tube and a transduct segment of the second main tube.

Abstract: A heat exchange system of the invention includes at least multiple grids, a blower including an external rotor motor and a wind blade, an inner side wall, a shock absorbing pad, a compressor, and a box having multiple exhaust inlets. The exhaust inlets are disposed on the side of the box. The grids are disposed at an exhaust outlet of the box. The blower is disposed in the box and below the grid. The compressor is disposed on a bottom surface in the box. The blower is an external rotor axial fan, and the wind blade is disposed outside a rotor of the external rotor motor. The shock absorbing pad is disposed between the grids and the external rotor motor.

Abstract: A heater core includes a plurality of plate pairs. Each plate pair defines a respective fluid flow chamber. Each plate pair has a proximal plate defining a respective proximal plate plane and a distal plate defining a respective distal plate plane. Each of the proximal plate planes and the distal plate planes are parallel. Each plate pair has bilateral symmetry about a medial plane orthogonal to the proximal plate planes. A circular inlet aperture is defined in each respective proximal plate and each respective distal plate of the plurality of plate pairs. Each inlet aperture has a center on the medial plane. The inlet apertures are aligned on a common inlet aperture axis. A circular outlet aperture is defined in each respective proximal plate and each respective distal plate of the plurality of plate pairs. Each outlet aperture has a center on the medial plane.

Abstract: The invention relates to a heat exchanger system comprising a jacket extending along a longitudinal axis and surrounding a jacket space. A pipe bundle is arranged in the jacket space wherein pipes are wound helically around a central pipe. At least one pre-distributor container is arranged in the jacket space for accommodating and degassing a liquid-gas mixture and designed to coat a distributing means with liquid degassed in the at least one pre-distributor container. The distributing means is designed to deliver the liquid to the pipe bundle. At the top the jacket has an inlet which is aligned with the longitudinal axis and in fluid connection with the central pipe. The central pipe has at least one lateral opening so that the liquid-gas mixture can be fed via the inlet, the central pipe, and the at least one lateral opening into the at least one pre-distributor container.

Abstract: The present disclosure relates to an outdoor unit of an air conditioner, the outdoor unit including a case forming a front surface and a rear surface and an exterior of a circumferential surface between the front surface and the rear surface and divided into a mechanical room and a heat exchange space by a barrier, a blower fan disposed in the heat exchange space to suction in air in an axial direction and discharge air in a circumferential direction, an outdoor heat exchanger disposed in the heat exchange space, an orifice member disposed to divide the blower fan and the outdoor heat exchanger and guide heat exchanged air toward the blower fan, and discharge grilles formed at a portion of the circumferential surface including an upper surface of the case and having outlets to allow the heat-exchanged air to be discharged in the circumferential direction.

Abstract: A protective housing is provided for a heating, ventilation, and air conditioning (HVAC) unit having a fan therein. The fan comprises a plurality of blades, each blade having a proximal and distal end. The housing comprises a plurality of side panels, each side panel comprising openings enabling airflow into the housing. The housing further comprises an access panel that is coupled between two of the plurality of side panels wherein the access panel and the plurality of side panels form an enclosure. An orifice ring is mounted within the housing, wherein a running clearance between the distal end of the fan blades and the orifice ring has a first spacing. A cover fastens atop the enclosure, the cover comprising a grill having a plurality of grill members, wherein the grill members are separated by a second spacing, the second spacing being smaller than the first spacing.

Abstract: The heat exchanger comprises at least one gas flow channel, at least one water flow channel, and a metal wall delimiting the gas flow channel from the water flow channel. The at least one water flow channel comprises a number of consecutive parallel straight segments. Two consecutive parallel straight segments are separated by a wall and by a U-turn comprising an upstream section and a downstream section. The upstream and the downstream sections are defined as the sections of the U-turn delimited on the one hand by the plane of the wall separating the two consecutive parallel straight segments; and on the other hand by the plane through the end section of the wall separating the two consecutive parallel straight segments, the plane which is parallel with the width direction of the water flow channel and which is perpendicular to the plane of the wall separating the two consecutive parallel straight segments.