摘要:
A surface coating layer (120), in contact with a surface of a base material (100) of a heat exchanger, comprises a plurality of composite layers comprising a first layer (120a) contacting a surface of the base material (100), the first layer (120a) comprising a first composite comprising a first matrix (50a) and a first nanobody (50b), and a second layer (120b) contacting a surface of the first layer (120a) and having an interface with the air, the second layer comprising a second composite comprising a second matrix (50a) and a second nanobody (50b), wherein the first layer (120a) and the second layer (120b) each include a different amount by volume of the first nanobody and the second nanobody, respectively.
摘要:
A heat pump is provided. The heat pump may include an outdoor heat exchanger that performs a heat exchange operation between refrigerant and outdoor air. The outdoor heat exchanger may include a refrigerant tube that guides refrigerant therethrough, and one or more fins coupled to the refrigerant tube. One face of each of the fins may be coated with a water repellent coating material and another face thereof may be coated with a hydrophilic coating material. An area coated with the water repellent coating material may be greater than an area coated with the hydrophilic coating material.
摘要:
Disclosed herein is an heat transfer device (100) comprising a shell (20); the shell (20) being an enclosure that prevents matter from within the shell (20) from being exchanged with matter outside the shell (20); the shell (20) having an outer surface and an inner surface; and a porous layer disposed on the inner surface of the shell (20); the porous layer having a thickness effective to enclose a region (24) between opposing faces (21 and 23); the region (24) providing a passage for the transport of a fluid; the porous layer having a thermal conductivity of about 0.1 to about 2000 watts per meter-Kelvin and a mass flow rate of about 10 -9 to about 10 -4 kilograms per second.
摘要:
The invention relates to a method for producing a hydrophobic coating for condensers used for obtaining dropwise condensation. In said method, a coating agent comprising a liquid solvent and at least one coating material is applied to the condenser in a wet chemical process. The coating material is selected from among the group encompassing sol-gel materials based on silicon oxide sol, fluorocarbon polymers, silicones, and/or polyurethane-forming components. The solid content of the sol-gel material based on silicon oxide sol ranges from > 0.5 wt.% to ≤ 20 wt.%, and/or the fluorocarbon content ranges from > 0.1 wt.% to ≤ 5 wt.%, and/or the solid content of silicone ranges from > 5 wt.% to ≤ 30 wt.%, and/or the content of polyurethane-forming components ranges from > 3 wt.% to ≤ 30 wt.%, the percentages being in relation to the total weight of the coating agent.
摘要:
Techniques for heat transfer are provided. In one aspect of the invention, a heat-transfer device (200) is provided. The heat-transfer device comprises one or more microchannels (213) suitable for containing a heat-transfer fluid, one or more of the microchannels having protruding structures (214) on at least one inner surface thereof configured to affect flow of the heat-transfer fluid through the one or more microchannels. The structures may comprise posts coated with a hydrophobic coating.
摘要:
According to the invention, in order to prevent a film from forming which obstructs the transfer of heat in heat exchanger pipes (1, 23), the heat exchanger pipe (1, 23) comprises an external side (4) which is adjacent to the external surface (3) and which is impinged upon by a steam medium, and an inner side (6) which is adjacent to an inner surface (5) and which is impinged upon by a coolant, such that the outer surface (3) is provided with a first layer (7) which reduces the adhesion of the steam on the outer surface (3) and/or the inner surface is provided with a second layer (9) which reduces the adhesion of a coolant to the inner surface (5) and which is embodied as a biocidal layer. The invention relates to a heat exchanger (17) and to the use thereof.
摘要:
Techniques for heat transfer are provided. In one aspect of the invention, a heat-transfer device (200) is provided. The heat-transfer device comprises one or more microchannels (213) suitable for containing a heat-transfer fluid, one or more of the microchannels having protruding structures (214) on at least one inner surface thereof configured to affect flow of the heat-transfer fluid through the one or more microchannels. The structures may comprise posts coated with a hydrophobic coating.
摘要:
A thermally efficient resistive heater assembly ( 10 ) for heating a source substance for generation of gas has a chamber ( 100 ) for containing the source substance, a thin resistive heating element ( 40 ) suspended across an aperture ( 110 ) and disposed for immersion in the source substance, and conductive traces ( 50 ) electrically coupled to the thin resistive heating element ( 40 ). The resistive heater assembly may be fabricated by a method including (S10) providing a first substrate layer ( 20 ); ( S20 ) bonding to it a second substrate layer ( 30 ), the second substrate layer bearing the resistive heating element ( 40 ) and conductive traces ( 50 ); (S40) bonding to that an optional hydrophobic layer (60) if necessary; and (S50) bonding to the previous layer a top layer (70). At least one of the layers may include manifolding (80) for the gas. All or part of the fabrication method may be performed as a reel-to-reel process.
摘要:
Gegenstand der Erfindung ist ein Verdampfer mit beheizbarer Wärmetauscherfläche, die eine selbstreinigende mikrostrukturierte Oberfläche mit Erhebungen und Vertiefungen aufweist. Die mikrostrukturierte Oberfläche der Wärmetauscherfläche kann durch Pulverbeschichtung hergestellt werden. Gegenstand der Erfindung ist ferner ein Verfahren zum Eindampfen von Lösungen in einem Verdampfer mit selbstreinigender mikrostrukturierter Wärmetauscherfläche, wobei die einzudampfende Lösung vorzugsweise viskose oder feste Bestandteile gelöst, emulgiert oder suspendiert enthält. Mit den erfindungsgemäßen Verdampfern wird beim Eindampfen der Lösungen ein Anbacken der viskosen bzw. festen Bestandteile an den Wärmetauscherflächen vermieden. Dadurch können derartige Lösungen auf einen Lösungsmittelgehalt von