摘要:
The present invention is to resolve a problem such as the above, the purpose being providing a heat exchanger capable of improving heat exchange efficiency by allowing the amount of heating medium flowing through heat medium channels, which are in multiple layers between a plurality of plates, to be evenly distributed. The present invention comprises a heat exchange part having heating medium channels, through which heating medium flows, and combustion gas channels, through which combustion gas burned in a burner flows, adjacently disposed in alternation in the spaces between the plurality of plates, the heat exchange part being provided in multiple numbers in a stacked structure, and having a heating medium distribution part for narrowing the channel at points where the flow direction of the heating medium is switched in adjacently located heating medium channels.
摘要:
A round plate heat exchanger of the present invention has a heat exchange part in which heat medium flow paths and combustion gas flow paths are formed so as to be alternatingly adjacent to each other in a space among a plurality of plates, wherein the plurality of plates forming the heat exchange part are formed by stacking a plurality of unit plates comprising a first plate and a second plate stacked therein, the plurality of heat medium flow paths are formed to be spaced from each other between the first plate and the second plate of the unit plate, a heat medium connection flow path is formed in a part of the region of the heat medium flow paths located adjacent to each other, and the combustion gas flow path is formed between the second plate of the unit plate, located at one side of the unit plate, among the unit plates, which are stacked adjacent to each other, and the first plate of the unit plate, located at the other side of the unit plate.
摘要:
A heat exchanger according to the present invention comprises a heat exchange portion in which heating water flow paths where heating water flows through a space between a plurality of plates, hot water flow paths through which hot water flows, and combustion gas flow paths are adjacently and alternatingly formed, wherein the heat exchange portion comprises: a heating sensible heat portion, which surrounds the outside of a combustion chamber and comprises an area on one side of the plates, for heating the heating water using the sensible heat of the combustion gas generated by combustion of the burner; a heating latent heat portion, which comprises a partial area on the other side of the plates, for heating the heating water using the latent heat of water vapors in the combustion gas which has completed heat exchanging in the heating sensible heat portion; and a hot water latent heat portion, which comprises the remaining area on the other side of the plates, for heating direct water using the latent heat of water vapors in the combustion gas which has passed through the heating latent heat portion.
摘要:
A thermal interface material, a method for preparing a thermal interface material, a thermally conductive pad, and a heat dissipation system are provided. The thermal interface material includes a metal zirconium coil (1) and carbon nanotube arrays (2), where the metal zirconium coil has a first surface and a second surface that is opposite to the first surface, carbon nanotubes in the carbon nanotube arrays are distributed on the first surface and the second surface, and the first surface and the second surface of the metal zirconium coil include exposed metal zirconium. Therefore, interface thermal resistance of the thermal interface material is reduced, and a heat conducting property of the thermal interface material is improved.
摘要:
There is provided a semiconductor module which, at the time of soldering insulating substrates of different shapes to a radiator plate, makes the management of a curve formed on the radiator plate before soldering easy, prevents the appearance of a crack in solder, and narrows a gap between the radiator plate and a cooling fin. When insulating substrates (1 and 2) of different shapes are soldered to a radiator plate (3), a third concave curve (11) is formed in advance on an insulating substrate (1 and 2) side of the radiator plate (3). The third curve (11) is determined by adding a second concave curve (7) which is expected at the time of actually soldering the insulating substrates (1 and 2) of different shapes to the radiator plate (3) to a first concave curve (6) obtained by moving upside down a convex curve which appears at the time of soldering the insulating substrates (1 and 2) of different shapes to a flat radiator plate (3). A bottom (11a) of the third curve (11) is positioned under the large insulating substrate (2) and a curvature of a portion for which the distance between the bottom (11a) and a reference point (5a) of the radiator plate (3) is longer is made smaller than a curvature of a portion for which the distance between the bottom (11a) and a reference point (5b) of the radiator plate (3) is shorter.
摘要:
A passive radiative cooling system comprising: a plurality of modules, each said module including: an ultra-black emitter including a metal sheet and a plurality of metamaterial nanostructures arranged in an ultra-black metamaterial-based pattern on a first surface of the metal sheet, said plurality of metamaterial nanostructures being configured to emit radiant energy having wavelengths in the range of 8µm to 13µm; a reflective layer mounted on the first surface of the emitter layer and configured to reflect incident solar radiation; and a conduit structure disposed under the metal sheet emitter layer and configured to conduct a coolant between an inlet port and an outlet port such that thermal energy is conducted from the coolant through the metal sheet to said plurality of metamaterial nanostructures; and a flow control system configured to pass said coolant through said plurality of modules.
摘要:
According to one aspect there is provided a passive radiative cooling panel comprising: an emitter layer including an ultra-black material that is configured to convert thermal energy into radiant energy such that at least a portion of said radiant energy has wavelengths in the range of 8µm to 13µm, said ultra-black material being further configured such that said portion of said radiant energy is generated with an emissivity of at least 0.998; and an upper layer disposed to receive said radiant energy on a lower surface thereof, said upper layer being configured to reflect incident solar radiation directed onto an upper surface thereof, said upper layer further configured to pass therethrough said portion of said radiant energy having wavelengths in the range of 8µm to 13µm such that said emitted radiant energy portion is transmitted from said upper surface.
摘要:
The heat exchanger is equipped with a heat transfer member (10, 20) including a flow port (11, 12, 21, 22) for receiving or discharging a fluid (6, 7), a plurality of heat exchange passages (13, 23), and a connection passage part (14, 24) having both ends, one of the ends being connected to the flow port and the other thereof being connected to the plurality of heat exchange passages (13, 23). The connection passage part has a tournament shape branched into two by two as it advances toward the heat exchange passages.
摘要:
In order to provide a thermal transport structure excellent in bendability, heat dissipation property, and lightweight property and also a thermal transport structure having a high reliability against vibrations and an excellent heat transport performance, used is a thermal transport structure (5, 201) including stacked graphite sheets (1, 213). This thermal transport structure (5, 201) includes a fixing portion (10, 202, 301) in which the stacked graphite sheets (1, 213) are fixed to each other; and a thermally conductive portion (11, 203) in which the stacked graphite sheets (1, 213) are not fixed to each other.