摘要:
Heating apparatus comprising a water cylinder, a first heat exchanger, a compressor, an expansion valve and a second heat exchanger. The first heat exchanger comprises a tubular coil wound around and in thermal contact with the outer periphery of the cylinder such that adjacent winds are in a in a spaced arrangement such that they do not engage each other and the compressor is operatively connected to the heat exchanger for the supply of compressed hot refrigerant thereto to enable heat to be transferred from the refrigerant to water within the water cylinder. Preferably the water cylinder and first heat exchanger are in a casing and the second heat exchanger is a separate component.
摘要:
Spiral finned elliptical tube closed circuit coolers and evaporative refrigerant condensers in which the air flow entering the unit is directed to flow across the tubes in a direction that is parallel to the tube axes and generally perpendicular to the fins produce a completely unexpected gain in capacity of 25% compared to comparable units in which the air flow is directed across/perpendicular to the tube axes.
摘要:
Die Erfindung betrifft einen Wärmetauscher (1 ), mit einer Mehrzahl von ersten Fluidleitungen (2) aus einem flexiblen Material (13) zum Durchströmen mit einem (ersten) Fluid (F1 ), mit einer Haltestruktur (3), welche eine Mehrzahl von Halteelementen (4) zum Halten der ersten Fluidleitungen (2) umfasst, wobei die ersten Fluidleitungen (2) und die Halteelemente (4) wenigstens ein Gewebe (5) ausbilden, wobei die ersten Fluidleitungen (2) Schussfäden (6) und die Halteelemente (4) die Kettfäden (7) des Gewebes (5) ausbilden, oder umgekehrt.
摘要:
A method for manufacturing a coil-on-tube heat exchanger is provided. The method comprises the steps of preforming a coil tube into a preformed coil tube, having an ovoid cross-section. The method further comprises exerting tension forces on the preformed coil tube and guiding the preformed coil tube to a central tube that is to be rotated and translated relative to the preformed coil tube and on which the preformed coil tube is to be wound. The winding of the preformed coil tube further deforms the preformed coil tube into a wound coil tube having an oval cross-section. An apparatus for manufacturing said coil-on-tube heat exchanger is further provided. A radially expandable shaft assembly for rotating the central tube that can be included in the apparatus is also described.
摘要:
A method is described of manufacturing a set of heat exchange cells (1a-1d) having a thermal power falling within a predetermined range of minimum and maximum values, each heat exchange cell (1a-1d) comprising at least one heat exchanger (2) mounted in a respective containment casing (5), wherein the method comprises the steps of: a) providing a single containment casing (5) of a plurality of heat exchange cells (1a-1d) of the set, the casing (5) having a constant axial extension as the thermal power of the cell (1a-1d) varies within the range of thermal power values and equal to the axial extension of the cell having the minimum thermal power within the range of thermal power values; b) providing a plurality of helically-shaped heat exchangers (2) each having a thermal power falling within said range of minimum and maximum values and each comprising at least one tubular duct (3) for the flow of a first heat transfer fluid coiled about a longitudinal axis (X-X) of the helix according to a plurality of coils; c) mounting within said single containment casing (5) at least one helically- shaped heat exchanger (2) of the plurality of heat exchangers (2) of the set; wherein the plurality of heat exchangers (2) of the set has an internal diameter that is substantially constant as the thermal power of the heat exchanger (2) varies within the range of thermal power values; and wherein the tubular duct (3) of the heat exchanger (2) has a radial extension of the coils proportional to the thermal power of the heat exchanger (2) and such to maintain substantially constant the axial extension of the heat exchanger (2) as its thermal power varies and equal to the axial extension of the heat exchanger (2) having the minimum thermal power within the range of thermal power values of the set.