A heat exchanger layer having an inlet side, IN, where a medium enters the layer and an outlet side, OUT, where the medium exits the layer, and a plurality of fins defining a plurality of flow channels for the medium from the inlet side to the outlet side. Each fin has a leading edge adjacent the inlet side and a trailing edge adjacent the outlet side, and wherein the leading edge of a subset of the fins is thicker than the rest of the fin, and the leading edge of the fins intermediate the fins of the subset of fins is recessed with respect to the inlet side compared to the leading edge of the fins of the subset of fins.

A heat exchanger apparatus includes: spaced-apart peripheral walls extending between an inlet and an outlet, the peripheral walls collectively defining a flow channel which includes a diverging portion downstream of the inlet, in which a flow area is greater than a flow area at the inlet; a plurality of spaced-apart fins disposed in the flow channel, each of the fins having opposed side walls extending between an upstream leading edge and a downstream trailing edge, wherein the fins divide at least the diverging portion of the flow channel into a plurality of side-by-side flow passages; and a heat transfer structure disposed within at least one of the fins.

A cooling system for a wind tunnel is disclosed. The heat exchanger of the present disclosure is formed as a turning vane in an airflow duct of a re-circulating wind tunnels. The individual vanes are formed from extruded aluminum with coolant fluid channels running continually down the length of the vane. One or more channels can be used, depending on the application of vane and the cooling capacity needed. The exterior of the vanes are formed in an airfoil shape to efficiently turn the air flow the desired amount in a manner well known in the art. The turning vanes are connected to a fluid supply with single piece connectors that removably attach to the turning vanes. In the depicted embodiment the connectors are attached with screws. In the depicted embodiment the connectors are formed as a single piece in a two-piece injection mold.

A tubular heat exchanger includes tubes, each having a plurality of cells inside, stacked in multiple stages and zigzag-bent heat-radiating fins brazed and integrated among the tubes. The gaps among the tubes become progressively wider toward the rear to enable foreign substance to be discharged without being caught by the heat-radiating fins. The upper and lower surfaces are formed of an inclined surface progressively and symmetrically reduced and inclined rearwardly with respect to a tube center line to have the front cell thicker than the end cell. The upper and lower surfaces of the heat-radiating fins are formed of an inclined surface progressively and symmetrically enlarged and inclined rearwardly with respect to a fin center line. A wind direction guiding ribs, tilted toward the upper and lower surfaces of the tubes, protrude from the heat-radiating fins to blow the wind along the upper and lower surfaces of the tubes.

A pin for a heat exchanger. The pin includes: a monolithic top section; a monolithic bottom section; and a middle section comprising a plurality of spaced apart sub-pins extending between the top section and the bottom section, wherein the plurality of sub-pins define one or more windows for allowing fluid flow through the middle section. Also disclosed is a layer of a heat exchanger including the pin, as well as a heat exchanger including the layer, and a method of making a layer for a heat exchanger.

A flat heat transfer tube is used for a cross fin tube type heat exchanger including the flat heat transfer tube having a bending portion and a plurality of holes extending in a direction parallel with an axis direction of the flat heat transfer tube, and a plurality of plate fins bonded by welding to the flat heat transfer tube, wherein an interval between an outer surface of the flat heat transfer tube and an inner surface of the hole of a portion which is curved with a small curvature during bending is larger than an interval between an outer surface of the flat heat transfer tube and an inner surface of the hole of a portion which is curved with a large curvature during bending in a cross section of a portion of the flat heat transfer tube which corresponds to the bending portion before bending.

A thermal management assembly is provided for both removing heat and absorbing acoustic energy. The thermal management assembly includes a heat sink base component and a plurality of thermally conductive fins disposed in a sparsely-arranged array in thermal communication with the heat sink base component. Each fin defines a two-sided Helmholtz unit cell disposed in a periodic array extending from the heat sink base component. Each unit cell includes a lossy resonator and a lossless resonator. The lossy resonator includes a first chamber portion bounded by at least one first boundary wall defining a first chamber volume, and a first neck forming an opening in the first chamber portion. The lossless resonator includes a second chamber portion bounded by at least one second boundary wall defining a second chamber volume, and a second neck forming an opening in the second chamber portion.

A heat exchange plate which includes: a base board, where the base board includes a first edge along a first direction and a second edge along a second direction, and the first direction and the second direction are different directions; first flow guiders, where the first flow guiders are disposed on the base board, and are configured to guide flowing of air flows, where a plurality of the first flow guiders are arranged along the first direction at intervals into one column, and a plurality of columns of the first flow guiders are arranged along the second direction at intervals; and supporting structures, where the supporting structures are disposed on the base board, the supporting structures extend along the first direction, and the supporting structures and each column of the first flow guiders are arranged alternately along the second direction at intervals.

A bipolar plate for a fuel cell, is provided having an anode plate with an anode side and a coolant side, wherein there is formed on the anode side a first structuring in order to form an anode flow field, and a cathode plate with a cathode side and a coolant side, wherein there is formed on the cathode side a second structuring to form a cathode flow field, there being arranged between the anode plate and the cathode plate structural elements to form a coolant flow field, being contacted from the coolant sides of the anode plate and the cathode plate, and having an optimized pressure distribution in a fuel cell stack and an increased stability as compared to the prior art. The structural elements consist of an elastic material. A fuel cell stack and a vehicle including such features are also provided.

A counterflow heat exchanger includes a first fluid inlet, a first fluid outlet fluidly coupled to the first fluid inlet via a core section, a second fluid inlet, and a second fluid outlet fluidly coupled to the second fluid inlet via the core section. The core section includes a plurality of first fluid passages configured to convey the first fluid flow from the first fluid inlet toward the first fluid outlet, and a plurality of second fluid passages configured to convey the second fluid flow from the second fluid inlet toward the second fluid outlet such that the first fluid flow exchanges thermal energy with the second fluid flow at the core section. One or more drains are operably connected to the plurality of first fluid passages configured to remove condensation from an interior of the first fluid passages prior to the condensation reaching the first fluid outlet.