Abstract: A heat exchange system includes a shell having an interior with an inlet and an outlet wherein a first fluid circuit is defined from the inlet, through a heat exchange volume within the interior of the shell, to the outlet. A tubesheet is mounted within the shell dividing between the heat exchange volume and a plenum of a second fluid circuit within the interior of the shell. A set of tubes extends through the heat exchange volume, a respective interior passage of each tube being in fluid communication with the plenum through a respective opening though the tubesheet. The second fluid circuit includes the plenum and interior passages of the tubes. A spray nozzle is mounted in the plenum of the second fluid circuit with a spray outlet directed toward the tubesheet for cleaning the tubesheet with a submerged impingement jet issued from the spray nozzle.

Abstract: A concentric pipe geothermal heat exchanger well head is described. The well head may include a riser pipe having an outer pipe and an inner core pipe, wherein an inner heat exchanger pipe is coupled to the inner core pipe, a reducer coupled to an outer heat exchanger pipe on one side and coupled to the outer pipe on a second opposite side to conduct fluid between the outer heat exchanger pipe and the outer pipe, a flow pipe parallel to and biaxial with the riser pipe configured to be coupled to a geothermal heat pump, and an elbow coupled to the outer pipe to couple fluid between the outer pipe and the well head pipe.

Abstract: A defrosting apparatus comprises a heater case comprising a heat pipe seating part formed to extend from one surface thereof in a recessed shape and a heater receiving part formed to extend to be parallel with the heat pipe seating part. The defrosting apparatus also includes a heater which is mounted in the heater receiving part so as to emit heat when power is applied thereto, a heat pipe which has a flow path through which a working fluid filled therein flows, which has a part seated on the heat pipe seating part, and which is disposed to be adjacent to a cooling pipe of an evaporator such that heat is radiated to the cooling pipe of the evaporator by means of the working fluid at a high temperature which is heated by the heater and then is transferred, and a holder which is detachably coupled to the heater case so as to cover the heat pipe seated on the heat pipe seating part.

Abstract: A plate heat exchanger includes heat transfer plates each of which has openings at four corners thereof, and which are stacked together. The heat transfer plates are partially brazed together such that a first flow passage through which first fluid flows and a second flow passage through which second fluid flows are alternately arranged, with an associated heat transfer plate interposed between the first and second flow passages. The openings at each of the four corners communicate with each other, thereby forming a first header and a second header, the first header allowing the first fluid to flow into and flow out of the first flow passage, the second header allowing the second fluid to flow into and flow out of the second flow passage.

Abstract: In a header plateless type heat exchanger, to suppress temperature rise at an apical portion of a tube into which exhaust gas at high temperatures or the like flows, to thereby improve durability. A recessed groove portion 4c recessed inward with narrow width is formed on outer face side of each of a pair of plates, in parallel to a swelling portion 4 and in the approximately same length.

Abstract: A method for manufacturing a roll-bond heat exchanger has steps of: (1) A preparing step: preparing an in-process roll-bond plate that has a main plate with a bulged structure, and a degassing portion with a tube; (2) A degassing step: removing air from the bulged structure through the tube; (3) A filling step: filling refrigerant into the bulged structure; (4) A pressing step: pressing the bulged structure flat to form a pressed portion; (5) A cutting step: cutting the degassing portion to form a cut portion on the main plate; and (6) A sealing step: welding the cut portion. The main plate and the degassing portion are integrally formed as a single part and the degassing portion is able to be directly connected with the vacuum filling machine. Accordingly, processing steps and manpower for manufacturing the roll-bond heat exchanger are reduced.

Abstract: A method of operating a vehicle climate system includes, by a controller, responsive to a same blower motor request, operating a blower motor at a first speed responsive to a heater core isolation valve (HCIV) directing coolant used to heat a cabin to an engine. The method further includes, by the controller, responsive to the same blower motor request, operating the blower motor at a second speed less than the first speed responsive to the HCIV directing the coolant to an electric heater and not to the engine.

Abstract: A heat exchange apparatus, and more particularly a condenser device, is provided. The condenser includes a housing with tubes that have grooves on the outer surface thereof, baffles, and inlet and outlet manifolds for tube-side and shell-side heat transfer fluids. An outside of each of the tubes is coated with a material having a low wetting coefficient. The baffles of the condenser are formed so, and the that the distance between the baffles decreases from the shell-side heat transfer fluid inlet manifold to the shell-side heat transfer fluid outlet manifold. The inner surfaces of the tubes have protuberances thereon and are coated with a material having a high adhesion resistance coefficient.

Abstract: A baffle support and a baffle for a block-type heat exchanger. The baffle support comprises a base plate extending in a first direction and a transverse second direction. The baffle support comprises a first pair and a second pair of projections extending from the front surface of the base plate to engage the baffle. The first pair of projections is located further in the first direction than the second pair of projections. The baffle comprises a mounting member at each transverse edge of a baffle plate. Each mounting member comprises at least one stop surface) facing a first longitudinal edge of the baffle plate. A baffle assembly comprising two baffle supports and a baffle.

Abstract: A heat-dissipating device includes a condenser and an evaporator. The condenser includes a shell and a main capillary wick. The shell has a chamber and a through hole communicating with the chamber. The main capillary wick is disposed in the chamber. The evaporator has an evaporating section, a gas conduit and a liquid conduit. The evaporating section has a gas cavity, and the liquid conduit communicating with the chamber and filling with a liquid. The liquid conduit having a hole communicating with the gas cavity is inserted in the gas conduit and the gas cavity. A stepped area is formed between the liquid conduit and the chamber for gathering the liquid flowing into the liquid conduit.

Abstract: A total heat exchange element includes a stacked body that is formed by alternately stacking a first layer provided with a first passage through which a first air flow passes and a second layer provided with a second passage through which a second air flow passes. The stacked body includes a partition member between the first layer and the second layer, a spacing member provided in the first layer and the second layer and maintaining a spacing between the partition members facing each other, and a latent heat shielding member provided partly on the partition member and shielding transfer of latent heat between the first air flow and the second air flow through the partition member.

Abstract: A cooling system for a photovoltaic panel including micro flat heat pipes (HP) integrated with thermoelectric generators (TEG) and a cooled water reservoir for cooling the working fluid in heat pipes. The cooled water in the reservoir is pumped from the condensate pan of an air conditioner. Experimental results show that cooling system reduced the average temperature of the panel by as much as 19° C. or 25%. Further, the output power of the photovoltaic panel increased by 44% when the photovoltaic panel was used in a very hot climate (30-40° C.). An additional two watts of power was generated by the TEGs.

Abstract: A heat exchanger plate for use in a plate package for a heat exchanger device is disclosed. The plate has a geometrical main extension plane (q) and a circumferential edge portion, the circumferential edge portion having a curved upper portion, a substantially straight lower portion and two opposing side portions interconnecting the upper and the lower portions. An upper porthole is arranged in an upper section of the heat exchanger plate and located at a distance from the upper portion of the circumferential edge portion thereby defining an upper intermediate portion. The upper intermediate portion includes the shortest distance (d2) between a centre of the upper porthole and the upper portion of the circumferential edge portion. The heat exchanger plate further comprises an upper flange having an extension along the upper portion of the circumferential edge portion.

Abstract: Flow conditioner device (40), for use in a heat exchanger system (10). The flow conditioner device includes a honeycomb structure (42) and a mesh (44). The honeycomb structure is configured for rectifying an incoming gas flow (26), and is formed by walls that border channels extending in a flow direction (X) from inlet apertures at a leading surface, to respective outlet apertures at a trailing surface of the honeycomb structure. The mesh is formed by a plurality of wires that extend along further directions (Y, Z) transverse to the flow direction, and which are mutually spaced to define openings. The mesh is attached directly to the honeycomb structure and abuts the second surface, and cross-sectional areas of the openings defined along the further directions vary as a function of position along at least one of the further directions.

Abstract: A heat sink for use in induction welding includes a number of tiles, wherein the tiles are electrically non-conductive and have a thermal diffusivity of greater than about 25 mm2/sec. A joint flexibly joins the tiles together.

Abstract: A vapor chamber having a working fluid therein, includes a first and second casing, together forming an evaporator section having a plurality of first support structures therein, a condenser section having a plurality of second support structures therein, and a vapor flow chamber extending from the evaporator section to the condenser section is provided. The evaporator section further includes a plurality of extended heat transfer structures therein, contacting a first inner surface of the evaporator section of the first casing and being perpendicular thereto. The vapor flow chamber includes as least one evaporator vapor flow area. The first inner surface, second inner surface of the first and second casings, plurality of extended heat transfer structures, and at least one of a plurality of first support structures include evenly distributed and substantially the same thickness sintered powdered wick structures thereon.

Abstract: A heat exchanger assembly includes a first heat exchanger plate and a second heat exchanger plate each include an outer boundary edge. The heat exchanger assembly also includes a service plate configured to be coupled to the outer boundary edge of each of the first and second heat exchanger plates. The service plate includes multiple sections coupled together to form a single plate, wherein each section of the multiple sections is configured to be individually removed to provide access to a space between the first and second exchanger plates.

Abstract: A heat exchanger including a honeycomb structure having partition walls defining fluid cells extending between inflow and outflow end faces, and inner and outer peripheral walls. A first outer cylinder contacts the outer peripheral wall. A first inner cylinder having inflow and outflow ports for the fluid has an outer peripheral surface that contacts the inner peripheral wall. A second inner cylinder having inflow and outflow ports for the fluid is spaced on a radially inner side of the inner peripheral wall. The inflow port of the first inner cylinder is closer to the inflow end face than the outflow end face in an axial direction of the honeycomb structure. The outflow port of the second inner cylinder is closer to the outflow end face than the inflow end face in the axial direction of the honeycomb structure.

Abstract: A heat exchanger includes a central spar, a body, and a mounting arm. The central spar is disposed along an axial centerline of the heat exchanger. The body is disposed around the central spar. The body includes an exterior wall and heat exchanger core disposed within the exterior wall and integrally formed with the central spar. The mounting arm is integrally formed with and extends radially from the central spar. The mounting arm extends through a portion of the body and is integrally formed with the central spar via additive manufacturing.

Abstract: A geothermal system having a flow station connected to a heat pump that is connected to a heat pump that is connected to a flow vector assembly. The flow vector assembly is connected to a heating coil and a cooling coil disposed within the ductwork of a furnace. The flow vector assembly may also be connected to a flow helix heat exchanger assembly.