A flat-plate heat pipe and a preparation method thereof, and a heat exchanger are provided. The flat-plate heat pipe includes an upper shell (11) and a lower shell (12); the upper shell (11) and the lower shell (12) are assembled with each other to form a flat-plate shell (10) with a sealed cavity; the sealed cavity is filled with a phase change working medium; a capillary wick (20) is arranged in the flat-plate shell (10); and a surface of the capillary wick (20) has a micro-nano structure. By means of the arrangement of the above capillary wick having the micro-nano structure on the surface thereof, the flat-plate heat pipe has excellent heat conductivity and high resistance to gravity, and is flexible in use and arrangement.

A heat exchanger and method of making same are disclosed. In another aspect, a method of making a heat exchanger includes sintering powder metal and hot isostatic pressing of the powder metal. Moreover, an aspect of the present heat exchanger apparatus employs plates in a stacked arrangement with supercritical-CO.sub.2 flowing between the plates and between adjacent fins. Still another aspect of a heat exchanger apparatus is made of a nickel-based alloy.

A monolithic substrate including a silica material fused to bulk copper is provided for coupling with electronic components, along with methods for making the same. The method includes arranging a base mixture in a die mold. The base mixture includes a bottom portion with copper micron powder and an upper portion with copper nanoparticles. The method includes arranging a secondary mixture on the upper portion of the base mixture. The secondary mixture includes a bottom portion with silica-coated copper nanoparticles and an upper portion with silica nanoparticles. The method includes heating and compressing the base mixture and the secondary mixture in the die mold at a temperature, pressure, and time sufficient to sinter and fuse the base mixture with the secondary mixture to form a monolithic substrate. The resulting monolithic substrate defines a first major surface providing thermal conductivity, and a second major surface providing an electrically resistive surface.

A thermal management system for a gas turbine engine includes an additively manufactured nacelle component, at least a portion of the additively manufactured nacelle component forming an additively manufactured heat exchanger that extends into a fan bypass flow.

A heat exchanger comprises a jacket element and an insert element. The jacket element is configured as a fluid channel for a fluid to be tempered. The insert element is arranged in the fluid channel. The insert element includes web elements which are connected to the jacket element at different locations. Some of the web elements contain web element channels which are fluidly connected with the jacket element, so that in the operating state, a heat transfer fluid which is supplied to the jacket element can flow through the web elements. The jacket element contains chambers for a heat transfer fluid. The chambers contain one inlet opening and one outlet opening for the heat transfer fluid. The inlet opening and the outlet opening of the chamber are connected to the web element channels of two web elements each, which belong to the same row of web elements.

A heat exchanger includes a base and a plurality of substantially parallel and substantially vertical walls spaced apart and integrally formed with the base via additive manufacturing. The heat exchanger also includes at least one parting sheet not integrally formed with the plurality of walls, but being attached to the plurality of walls, defining flow channels between the walls, the base, and the at least one parting sheet.

A transfer tube for a thermal transfer device can include at least one wall having an inner surface and an outer surface, where the inner surface forms a cavity, where the at least one wall further has a first end and a second end. The first end can be configured to couple to a terminus of a heat exchanger of the thermal transfer device. The second end can be configured to couple to a collector box of the thermal transfer device. At least a portion of the at least one wall can be disposed in a vestibule of the thermal transfer device. The cavity can be configured to simultaneously receive a first fluid that flows from the first end to the second end and a second fluid that flows from the second end to the first end.

An additively manufactured heat exchanger configured to transfer heat between a first fluid and a second fluid includes a first channel with a first wall configured to port flow of a first fluid and a second channel with a second wall configured to port flow of a second fluid. The heat exchanger also includes a barrier channel containing unprocessed build powder provided by the additive manufacturing process and is located between the first wall and the second wall. The barrier channel is configured to prevent mixing of the first fluid and the second fluid when one of the first wall and the second wall ruptures.

A heat-exchange pipe that is excellent in heat-exchange property in which a metal porous body is not easily dropped off form a metal pipe; which is provided with the metal pipe and the metal porous body made by joining a plurality of metal fibers bonded to an inner-wall surface of the metal pipe; at least some of the metal fibers in the metal porous body are partially bonded to the inner-wall surface of the metal pipe along a length direction, bended on the inner-wall surface of the metal pipe, and extend to leave from the inner-wall surface.

An immersion-type porous heat dissipation substrate structure is provided. The immersion-type porous heat dissipation substrate structure includes a porous heat dissipation base formed by sintering of metal powder. The porous heat dissipation base is immersed in a two-phase coolant for increasing an amount of bubbles that is generated, and has a porosity that is controlled to be between 5% and 50%. Or, the porous heat dissipation base has more than one porosity.