Abstract: Heat transfer equipment often loses heat transfer capacity due to fouling and scaling which results in lost economic value in the form of lost heat, production, and the labor required for cleaning the equipment. A heat exchanger is provided, including: a first means of fluid communication to a shell (5); a second means of fluid communication to the shell; a flow diverter (2) for reversing the flow of fluid from the shell and the first and second means of communication; a tube (6) within the shell in fluid communication with both the first and second means of fluid communication; and a brush positionable within first and second brush housings (3), the brush housings positioned respectively on the first and second means of fluid communication, the brush moveable with the flow of fluid through the tube; wherein the tube is expandable independent of the shell. The tube is fixed to only one end of the shell without using tubesheets.

Abstract: A plumbing fitting having a body and a housing located in the body that includes a first inlet for receiving the first fluid, a second inlet for receiving the second fluid, and a mixing chamber. The plumbing fitting includes a first flow control valve operatively coupled to the housing; a second flow control valve operatively coupled to the housing; and an actuator assembly configured to move the first flow control valve relative to the housing to control flow of the first fluid from the first inlet to the mixing chamber, such that the first fluid exerts substantially no net force on the first flow control valve, and configured to move the second flow control valve relative to the housing to control flow of the second fluid from the second inlet to the mixing chamber, such that the second fluid exerts substantially no net force on the second flow control valve.

Abstract: A connection device for a heat exchanger between a first fluid (L) and a second fluid (G), said device comprising a connector (30) and a lateral end panel (37) of a heat exchange bundle (14) of said exchanger, said lateral panel (37) including at least one connection element (38) comprising transversely aligned inlet/outlet openings (47, 47?), said connection element (38) allowing the first fluid to flow between the bundle and the inlet and outlet openings (34, 36) of the connector (30), aligned longitudinally or at an angle relative to said inlet/outlet openings (47, 47?) of the connection element (38), said connection element (38) and said connector (30) being of substantially the same length.

Abstract: Disclosed are a fin (1) for a heat exchanger, and a heat exchanger having the fin (1). The fin (1) comprises a fin body (10) in a waveform structure formed by boards, wherein the fin body (10) has two first side surfaces (11) which are opposite one another in a first direction, two second side surfaces (12) which are opposite one another in a second direction, and wave crests and wave troughs, which are on the second side surfaces (12); and the first direction and the second direction intersect. The fin body (10) comprises: a first concave portion (13), wherein the first concave portion (13) is formed in the fin body (10), and is located on the two first side surfaces (11) of the fin body (10). The fin (1) and the heat exchanger are manufactured more simply. Since the connection portions between the wave crests and wave troughs of the fin (1) are approximately perpendicular to a heat exchange tube (2), the condensed water is more easily discharged.

Abstract: A heat exchanger, in which refrigerant causing disproportionation is used, includes a main heat exchange unit including a plurality of first heat transfer pipes arranged side by side, a sub-heat exchange unit including a plurality of second heat transfer pipes arranged side by side, and a relay unit including a plurality of relay passages connecting the plurality of first heat transfer pipes and the plurality of second heat transfer pipes. Each of the plurality of relay passages has one inlet connected to a corresponding one of the plurality of second heat transfer pipes, and a plurality of outlets each connected to a corresponding one of the plurality of first heat transfer pipes. Each of the plurality of relay passages distributes the refrigerant flowing from the one inlet, without merging streams of the refrigerant together, and causes the refrigerant to flow out of the plurality of outlets.

Abstract: A cooling system for a computer system comprises at least one unit such as a central processing unit (CPU) generating thermal energy and a reservoir having an amount of cooling liquid, said cooling liquid intended for accumulating and transferring of thermal energy dissipated from the processing unit to the cooling liquid. The cooling system has a heat exchanging interface for providing thermal contact between the processing unit and the cooling liquid for dissipating heat from the processing unit to the cooling liquid. Different embodiments of the heat exchanging system as well as means for establishing and controlling a flow of cooling liquid and a cooling strategy constitutes the invention of the cooling system.

Abstract: A slurry distributor includes a feed conduit and a distribution conduit in fluid communication therewith. The feed conduit includes an entry segment with a feed inlet and a feed entry outlet in fluid communication therewith and extending along a first feed flow axis. The feed conduit includes a shaped duct having a bulb portion in fluid communication with the feed entry outlet. The feed conduit includes a transition segment in fluid communication with the bulb portion and extending along a second feed flow axis in non-parallel relationship with the first feed flow axis. The bulb portion has an area of expansion with a cross-sectional flow area that is greater than a cross-sectional flow area of an adjacent area upstream from the area of expansion. The shaped duct has a convex interior surface in confronting relationship with the feed entry outlet of the entry segment.

Abstract: The invention relates to a cooling system for a computer system, said computer system comprising at least one unit such as a central processing unit (CPU) generating thermal energy and said cooling system intended for cooling the at least one processing unit and comprising a reservoir having an amount of cooling liquid, said cooling liquid intended for accumulating and transferring of thermal energy dissipated from the processing unit to the cooling liquid. The cooling system has a heat exchanging interface for providing thermal contact between the processing unit and the cooling liquid for dissipating heat from the processing unit to the cooling liquid. Different embodiments of the heat exchanging system as well as means for establishing and controlling a flow of cooling liquid and a cooling strategy constitutes the invention of the cooling system.

Abstract: A modular thermal energy storage system for storing and transferring thermal energy at a wide range of temperatures. The system includes processing control circuitry, heat transfer fluid (HTF), piping, valves, pumps, a thermal energy source, and a reconfigurable thermal energy storage (TES) tank implemented in one or more insulated shipping containers. Different types of replaceable thermal energy storage material in the TES tank can store thermal energy in a range of ?30° F. to temperatures greater than +200° F. The system receives HTF from a customer load and charges the HTF to a desired temperature. Charged HTF in the TES tank transfers thermal energy to and from the storage material. When the stored thermal energy is needed, the system passes a non-charged thermal fluid through the TES tank to draw out the thermal energy through the charged HTF, and transfers the thermal energy to the customer load.

Abstract: A multi-layer structure includes a substrate with a surface and with particles partially covering and partially embedded in the surface. The particles have high thermal conductivity and low electrical conductivity. A dielectric layer on the surface partially covers the partially embedded particles. A metal layer on the dielectric layer covering the partially covered particles forms a thermal interface material (TIM) for electronic packaging applications.

Abstract: The present disclosure relates to thermochemical heat storage units. The teachings thereof may be embodied in systems and methods for operating, including charging and discharging, a thermochemical heat storage unit. For example, a method for operating a thermochemical heat storage unit may include: producing a first steam and feeding it to a heat exchanger; partially condensing the steam with release of its thermal energy, in the heat exchanger; subsequently pressurizing water condensed from the steam; feeding the pressurized water to the heat exchanger; evaporating the water into a second steam; and storing at least a portion of the second steam in a steam storage unit.

Abstract: Disclosed are a heat exchange plate (10) and a plate-type heat exchanger using the heat exchange plate (10). The heat exchange plate (10) comprises: a body; pits and/or protrusions (3), arranged on the surface of the body in predetermined patterns; and a plurality of adjusting portions (1, 2), wherein four quadrangular adjusting portions (1, 2) are arranged at the periphery of each pit and/or protrusion (3), then a basic heat transfer unit (4) is formed by each pit and/or protrusion (3) and the adjusting portions (1, 2) at the periphery thereof, and the adjusting portions (1, 2) in each basic heat transfer unit (4) are arranged to be provided with relatively large gaps in a main flow direction (D 1) of fluid on the heat exchange plate (10) and are arranged to be provided with relatively small gaps in an auxiliary flow direction (D2) of the fluid on the heat exchange plate (10).

Abstract: An indoor unit of an air-conditioning apparatus includes a casing including an air inlet, an air outlet, and an air passage communicating between the air inlet and the air outlet, the air inlet being located lower than the air outlet, an indoor heat exchanger disposed inside the casing, an indoor fan disposed inside the casing and configured to supply air to the indoor heat exchanger, a refrigerant leakage sensor disposed in the air passage between the air inlet and the air outlet at a position lower than the indoor heat exchanger and the air outlet, and configured to detect refrigerant leakage, and a controller configured to determine whether refrigerant leakage occurs according to a detection result of the refrigerant leakage sensor.

Abstract: There is disclosed a vehicle air conditioner device which is capable of continuing an air conditioning operation also in a case where a disconnection failure occurs in a solenoid valve to change a flow of a refrigerant in each operation mode. Respective solenoid valves 17, 20, 21 and 22 to change the respective operation modes of a vehicle air conditioner device 1 are constituted so that the flow of the refrigerant changes to a cooling mode when all the solenoid valves 17, 20, 21 and 22 are non-energized. The vehicle air conditioner device executes a cooling mode during failure in which a controller adjusts all the solenoid valves 17, 20, 21 and 22 to be non-energized and operates a compressor 2, in a case where the disconnection failure occurs in one of the solenoid valves 17, 20, 21 and 22.

Abstract: A laminated header includes: a plurality of plate-like members laminated with each other; one first opening; a plurality of second openings; and a distribution flow passage connecting the one first opening and each of the plurality of second openings to each other. The distribution flow passage includes: a first passage having a straight line shape; a first branching flow passage for the first passage to branch into a plurality of passages; a second passage that has a straight line shape and is connected to each of the plurality of passages branched in the first branching flow passage; a second branching flow passage for the second passage to branch into a plurality of passages; and a third passage that has a straight line shape and is connected to each of the plurality of passages branched in the second branching flow passage.

Abstract: Two-sided and two-sided mirrored fire barriers having each of their two sides tested, rated, and certified for use in common spaces, such as spaces shared between two rooms are taught. Two-sided barriers require only one barrier and one installation, instead of the two presently needed. Two-sided barriers may have different construction and composition on each side; whereas each side of a mirrored fire barrier is a mirror image of the other. All two-sided barriers include top-mounted, bottom-mounted, and side-mounted barriers, gas and moisture impermeable barriers, and barriers shaped to fit into the expansion joint spaces created when a plurality of expansion joints intersect. The barriers are disposed to various sizes, lengths, widths, and depths, in addition to variations in shape, content, number and composition of layers, materials, and attachment means required to accommodate the variety of sizes and shapes of expansion-joint spaces and the desired rating, in terms of hours.

Abstract: A system and method for the packaging of a synthetic jet actuator is disclosed. A synthetic jet actuator is provided that includes a first plate, a second plate spaced apart from the first plate and arranged parallelly thereto, and a housing positioned about the first and second plates and defining a chamber. The housing includes at least one orifice therein such that the chamber is in fluid communication with an external environment. The synthetic jet actuator also includes a mounting mechanism configured to mount the first and second plates within the housing in a suspended arrangement and an actuator element coupled to at least one of the first and second plates to selectively cause deflection thereof, thereby changing a volume within the chamber so that a series of fluid vortices are generated and projected to the external environment out from the at least one orifice of the housing.

Abstract: The heat exchanger includes at least one tube array in which refrigerant flows, the tube array includes a plurality of tubes each having a channel formed therein, and connection members coupled to opposite ends of the tubes so as to interconnect the tubes, and the tubes are injection molded integrally with the connection members.

Abstract: A two-phase fluid flow distribution system and method for a parallel flow evaporator or condenser are disclosed. Uniform distribution of the two-phase flow within a parallel microchannel heat transfer passages and increased system performance is achieved by integrating an orientation-insensitive, two-phase flow distribution device within the inlet. manifolds of the microchannel heat exchanger passages.

Abstract: A method for cleaning tube bundles with open end faces, in particular tube bundles of heat exchangers, air coolers, or condensers. A cleaning device which has at least one cleaning unit is positioned adjacently to the open ends of the tube bundle, and the at least one cleaning unit which has a high-pressure hose is then arranged in a successive manner by a controller so as to be flush with the respective tube of the tube bundle. The cleaning unit is inserted into the respective tube and supplied with a liquid under high-pressure. The aim of the invention is to improve such a method and device such that a reliable cleaning process is carried out without operating errors. This is achieved in that the insert depth is measured when inserting the at least one cleaning unit into the respective tube and monitored by the controller.