摘要:
The invention relates to a heat exchange device, in particular a vehicle radiator, for indirect exchange of heat between a first medium and a second medium, with a first guide section for routing the first medium and a second guide section for routing the second medium, the first guide section being formed by a thermally conductive heat exchange element consisting of graphite foam and being spatially separated from the second guide section, at least part of a second guide section being formed by the heat exchange element. The invention furthermore relates to a method for producing a heat exchange element for a heat exchange device, in particular for the radiator of a motor vehicle.
摘要:
An aluminum flat tube core is prepared, and a sprayed layer 20 is formed on a surface of the tube core by thermally spraying alloy containing Cu (including its alloy) and Zn (including its alloy), or an alloy containing Cu and Zn. With this method, a heat exchanger tube excellent in heat resistance, pressure resistance and corrosion resistance can be easily manufactured by extrusion, etc.
摘要:
A heat-transmitting plate member has a pair of heat-transmitting plates. Each of the plates is made from a resin material. The heat-transmitting plate member has an inner passage through which inner fluid flows and a tank portion communicating with the inner passage. The tank portion has a thickness thicker than that of a portion corresponding to the inner passage in the heat-transmitting plate member, so that desired heat-exchange characteristic at the inner passage can be obtained while desired ability to withstand pressure at the tank portion is obtained.
摘要:
A new and improved end-cap for use with a fluid heater is disclosed. The end-cap includes an end wall, a first groove in the end wall for receiving a first tube, a second groove in the end wall located radially inward of the first groove for receiving a second tube, and a third groove in the end wall located radially inward of the second groove for receiving a third tube. A first side wall separates the first and the second grooves, and a second side wall separates the second and the third grooves. The first and the second side walls each are relatively thin which facilitates deformation in a radial direction in response to differential thermal expansion of the end cap in relation to the tubes. In addition, the side walls compress in a circumferential direction in response to differential thermal expansion of the end cap in relation to the tubes. An annular flange is positioned radially inward of the second side wall to facilitate centering the third tube in the third groove. The flange also deforms in a radial direction in response to differential thermal expansion of the end cap in relation to the third tube. A gasket, positioned within each groove, is subjected to an axial sealing force from the respective tube. The gaskets each have a rectangular cross-section.
摘要:
The invention relates to a thin-film evaporator equipped with a heatable tubular evaporator body in whose product charged interior a driven rotor is disposed which is equipped with essentially radially oriented vanes. The invention is formed from an evaporator body of at least one thick-wall graphite tube with a plurality of essentially axially extending bores disposed in the tube walls, each one of the bores open at the tube ends into an annular channel which is in communication with a connecting pipe stub for a heating medium.Since the treatment of corrosive media, for example acids charged with solids, places high demands on corrosion resistance of the materials employed and additionally high demands for accuracy of the work, it is proposed to form the evaporator body (1) of at least one thick-wall graphite tube (2); to dispose a plurality of essentially axially extending bores (14) in the tube walls; and to have each one of the bores (14) open at the tube ends into an annular channel (15, 16) which is in communication with a connecting pipe stub (6, 9) for a heating medium.
摘要:
A heat recouperator having a single rotary heat and moisture wheel exchanger uses a random matrix media comprising a plurality of small diameter heat-retentive fibrous material, which provides high thermal efficiency in exchanging heat and moisture between inlet and exhaust air streams.
摘要:
A sacificial fiber method to fabricate straight, curved, or coiled tubes as small as 1 micron (0.000004 inches) in diameter with wall thicknesses starting at less than 0.01 microns. These tubes can be made from many of the materials that can be applied to a surface of carbon, glass, or other tube forming fibers and then made to withstand the environment used to remove the fiber. A monolithic piece can be formed where the tubes are channels or holes.
摘要:
A heat exchanger core having a tube of aluminum material and heat transfer fins of aluminum material joined to each other with a brazing filler, which has at least part of the surface thereof coated with an inorganic sintered layer incorporating therein a pigment-containing phase of the two complexes of potassium hexafluoroaluminate and potassium tetrafluoroaluminate.
摘要:
A total heat exchanger for exchanging both heat and humidity is made, using partition plates of a laminate of a carbon-fiber-based paperlike material and a hydrophilic material, resulting in improving the humidity exchange ability while both the permeability and the heat conductivity are high.