In one aspect, thermal energy storage systems are described herein. In some embodiments, such a system comprises a container, a heat exchanger disposed within the container, and a phase change material (PCM) disposed within the container. The heat exchanger comprises an inlet pipe, an outlet pipe; and a number n of plates in fluid communication with the inlet pipe and the outlet pipe, wherein n is at least 2. The inlet pipe, outlet pipe, and plates are arranged and connected such that a fluid flowing from the inlet pipe and to the outlet pipe flows through the plates in between the inlet pipe and the outlet pipe. The PCM disposed within the container is also in thermal contact with the plates.

The present invention discloses a flat heat pipe, comprising a bottom plate, a top plate, and a support plate located between the bottom plate and the top plate; a micron-level radial strip is processed on the inner surface of the bottom plate; the inner surface of the top plate is processed with superhydrophilic and superhydrophobic radial structures arranged at intervals to transport the condensate to the direction of the surrounding pipe wall; a wick is arranged on the inner side of the support plate. The present invention has the function of pumpless directional transport of liquid and convergence of refluxed condensate; thereby improving the heat exchange performance of the entire flat heat pipe.

A liquid cooling device includes a thermally conductive base, a cover, and a metallic partition. The thermally conductive base has a fluid chamber and a plurality of fins. The fins are located in the fluid chamber and protrudes from an inner surface of the thermally conductive base facing the fluid chamber. Every two of the fins located adjacent to each other define a channel therebetween. Distal ends of at least part of the fins located away from the inner surface together form a covering structure partially coving the channels. The metallic partition is located between and welded to the covering structure and the cover.

A heat exchanger for a heating, ventilation, and/or air conditioning system includes a manifold having an opening. The heat exchanger also includes a plurality of heat exchanger tubes, each heat exchanger tube of the plurality of heat exchanger tubes includes a body portion and an end, and the ends of the plurality of heat exchanger tubes are bundled together and extend into the manifold via the opening.

A method includes building a tubular object by a layer-by-layer additive manufacturing process. A structure integrally connected to the tubular object for supporting a portion of the tubular object is formed during building of the tubular object. The structure provides vibration dampening, heat shielding, heat transfer, stiffening, energy absorption, or mounting after the tubular object is built.

A counter-flow heat exchanger is provided that includes: a first fluid path having a first supply tube connected to a first transition area separating the first fluid path into a first array of first passageways, with the first array of first passageways merging at a first converging area into a first discharge tube; and a second fluid path having a second supply tube connected to a second transition area separating the second fluid path into a second array of second passageways, with the second array of second passageways merge at a second converging area into a second discharge tube. The first passageways and the second passageways have a substantially helical path around the centerline of the counter-flow heat exchanger. Additionally, the first array and the second array are arranged together such that each first passageway is adjacent to at least one second passageway.

A wick, a preparation method thereof, and a temperature equalization board are proposed. The wick is configured for being installed on a housing, and the housing includes cover plates. First diversion grooves and second diversion grooves are formed in both sides of the wick, respectively. The first diversion grooves are configured for forming first capillary channels together with the cover plates. The first capillary channels and the second diversion grooves are configured for connecting a heat source area with a heat dissipation area. Capillary through holes for working liquid and vapor of working liquid to pass through are formed in the first diversion groove.

Provided are a heat dissipation fin construction method, a related apparatus, and a heat dissipation fin. The heat dissipation fin construction method comprises: setting a plurality of structural parameter sets according to the preset numerical ranges of the twill angle, the wave amplitude, and the wavelength of a heat dissipation fin; separately obtaining respective heat transfer coefficients and air side pressure drops of the structural parameter sets, and establishing a fitting relationship between the heat transfer coefficients and the air side pressure drops for structural parameters; generating a corresponding performance map and a corresponding contour map on the basis of performance data of the fitted structural parameter sets; and determining an optimization interval of the wave amplitude and the wavelength of the heat dissipation fin according to the contour map, and constructing the heat dissipation fin according to the optimization interval.

A heat exchanger includes a heat exchanger core including a cold side and a hot side. The cold side directs a first cooling fluid from a cold inlet to a cold outlet. The hot side directs a hot fluid from a hot inlet to a hot outlet. An inlet header coupled to the hot side of the heat exchanger core at the hot inlet includes an interior wall and an exterior wall spaced apart from the interior wall. The interior wall defines an inlet duct; the interior wall and exterior wall define a cooling channel surrounding at least a portion of the inlet duct. The inlet duct directs hot fluid though the inlet header to the hot side. The cooling channel directs a second cooling fluid through the cooling channel.

In one aspect, a transparent heat exchanger includes a first transparent substrate optically attached to a heat source, one or more fins to transfer heat from the heat source, the one or more fins comprising transparent material and further comprising one of a manifold coupled to the first transparent substrate or a facesheet coupled to the first transparent material.