Abstract: A U-tube type heat exchanger is provided with means for uniformly distributing shell side fluid across the lateral expanse of the tube bundle. The distributor means includes first and second upstanding plates between which are connected several ribs.

Abstract: The heat exchanger comprises a vertical outer cylindrical shell of substantial length, a distributor for supplying the internal space of the shell with liquid sodium, at least one tube bundle placed within the shell for circulating water in heat-exchange relation with the sodium and means for maintaining an inert gas atmosphere above a predetermined free level of liquid sodium. The top and bottom tube ends are fitted with thermal sleeves for joining them to the lateral wall of the shell and passing them through this latter. The distributor is placed within the shell above the tube bundle between the top end of said bundle and the free level of liquid sodium.

Abstract: According to the embodiment shown, the novel body assembly, for use as a principal component for a fluid cooler, comprises a body of annular configuration formed from a pair of mirror-image halves which are fastened together to form a fluid-conducting channel therewithin. Each of the mating halves has a multiplicity of heat-radiating fins or ribs on the surface thereof which defines an outer surface of the body assembly. Additionally, the halves of the body have fins on their opposite surfaces and, on assembly together, these latter are interleaved, and define an undulating channel through which the fluid to be cooled is conducted.

Abstract: A cleaning body intercepting apparatus for a tube-type heat-exchanger, with the apparatus including a cylindrical body, a pair of outer gratings disposed in the cylindrical body so as to receiving cleaning bodies from the heat-exchanger, at least a pair of inner gratings within the outer gratings for forming a pair of throat portions each adjacent to the side wall of the cylindrical body, and extraction tubes each disposed under each of the throat portions. The pair of throat portions each are surrounded by the outer and inner gratings so that the cleaning bodies from the heat-exchanger are introduced into the throat portions. The cleaning bodies passed through the throat portions are taken out the cylindrical body through the extraction tubes.

Abstract: The invention relates to a heat exchanger wherein particle deposition is prevented on the inner surfaces of heat-and-mass transfer and chemical apparatus and comprises introducing into the flow of a liquid medium delivered into the apparatus solid particles which are fluidized by the medium and which exert mechanical action on the surfaces of the apparatus. The solid particles are made of a material neutral toward the medium. Also included in the invention is the provision of an apparatus for carrying out the aforedescribed method.

Abstract: A heat exchanger assembly and the method of making same wherein the heat exchanger assembly includes a heat exchanging core having spaced headsheets adjacent opposite extremities with fluid conveying tubes extending between the headsheets and having heat transfer fins disposed upon the tubes. Two plastic radiator components are disposed in mating engagement with one another with each component encasing one-half of the core and disposed in mating engagement with one another and defining spaced open cavities. Each of the components is in fluid-tight or sealed relationship with one another and with each of the headsheets disposed within the opening of each of the cavities so that the cavities and the headsheets define a pair of spaced tanks whereby fluid may flow between the tanks through the heat exchanging core. The headsheets are disposed in grooves within the components with a seal engaging the periphery of the headsheets and disposed in the grooves for sealing the headsheets to the respective components.

Abstract: In a cross flow tubular heat exchanger the tubes are arranged in a space between two concentrically, imaginary cylinders. Radially extending baffle plates ensure that the heat exchanging medium flowing outside the tubes and perpendicular to their direction will pass the central cylindrical space without tubes.

Abstract: A heat exchanger embodying an elongated tubular member having a passageway for working fluid extending longitudinally therethrough, and having external fins projecting outwardly from the tubular member in position of define passageways extending transversely thereacross, and the method of making the same.

Abstract: A tube bundle heat exchanger with baffles is disclosed wherein a tube bundle is housed within an inner casing which is acted upon from both the inside and the outside by a heating medium. The inner casing is not stressed by pressure caused by the heating medium since the medium flows both within and without the casing. The part of the circumference of each baffle which is in contact with the inner casing is tightly connected to the inner casing in order to prevent leak flows. Adjacent heat exchanger tubes of the tube bundle are separated from one another by a zigzag-shaped dividing wall. The dividing wall forms space-economical rerouting channels with the baffles. The tubes of the tube bundle are located parallel to the longitudinal axis of the heat exchanger, and therefore longitudinal in the longitudinal rerouting channels. The heating medium which flows through the rerouting channels flows across the tubes producing favorable heat transfer conditions.

Abstract: A fluidized bed condenser for use in condensing zirconium tetrachloride or hafnium tetrachloride vapor into solid zirconium tetrachloride or hafnium tetrachloride includes a scraper assembly. The scraper assembly includes at least one scraper arm located adjacent an inlet through which fluid zirconium tetrachloride or hafnium tetrachloride enters the condenser vessel. A cleanout rod is also mounted on the vessel to clean out the inlet, and the scraper includes a cleanout assembly for preventing build up of solid material in a solid outlet area defined in the vessel.

Abstract: An apparatus for supporting the tubes adjacent to a leaky tube to be sealed by explosive activated plugs, and including removable support plugs inserted into the ends of the adjacent tubes to provide the required tube wall and tube sheet support during detonation of the explosive activated plugs, with the support plugs being removed after the leaky tube is sealed.

Abstract: A heat exchanger having a horizontally-disposed, elongate shell with a partition extending lengthwise of the shell and interiorly thereof to form upper and lower compartments therein. The shell has end closures with at least one end closure having a flow passage communicating with the lower compartment of the shell for flow of fluid therethrough. A fluid port communicates with the upper compartment for delivering fluid thereto and passages at the edges of said upper compartment permit fluid flow from the upper compartment along the length thereof to wet the interior of the shell wall in the lower compartment. Fluid conduit means is positioned on the exterior of the shell for substantially the entire length thereof to place fluid in the conduit means in heat exchange relation with said shell wall.

Abstract: A heat exchanger for cooling process gases which are under high pressure and temperature. The withdrawn heat is used for high pressure steam generation in accordance with the natural circulation principle. The heat exchanger comprises U tubes suspendedly inserted in a plate or tube sheet. Two chambers are provided above the plate, are separated from one another, and are intended for the coolant-steam circulation. A housing surrounds the U tube bundle and is connected to and below the chambers. The housing has at least one process gas inlet and at least one process gas outlet. One arm of each U tube is constructed as a double tube. The inner tube has the function of a gravity tube, and the remaining annular conduit, as well as the remainder of each U tube, have the function of risers.

Abstract: A method of making a heat exchanger consisting of a conduit having a plurality of passes joined by integral return bends which comprises(i) bending two strips of material together in a zigzag manner to form a stack of substantially parallel passes, the two strips being displaced laterally with respect to one another,(ii) bonding the two strips together along lines substantially parallel to their longitudinal edges to form a flat, serpentine conduit, and(iii) inflating the conduit by applying internally a fluid under pressure.

Abstract: Longitudinally spaced sections of a collapsible plastic tube are supported on vertically spaced support surfaces. The supported sections of the tube serve as liquid reservoirs, these reservoir sections being laterally supported at their outlet ends by an overflow support. When the depth of liquid exceeds the height of the overflow support, the liquid flows downwardly through an overflow section of the tube into the succeeding reservoir section. Air is heated or cooled by flowing it through spaces which are bounded by the reservoir sections. A solar collector has its inlet connected to the lowermost reservoir section, and its outlet connected to the uppermost reservoir section.

Abstract: A heating installation equipped with a radiation- and convection floor heater for heating a room by means of a liquid heat carrier, comprising a device for heating the heat carrier, a circulation pump for circulating the heat carrier, and inflow line and return flow line for the heat carrier. The room is heated by a radiation- and convection floor heating element comprising a pipe through which flows the heat carrier. The pipe is arranged in a hollow space having a starting portion and a terminal portion. The hollow space is further provided with an inflow opening and an outflow opening. The starting portion of the hollow space communicates via the inflow opening with the heated room and the terminal portion of the hollow space communicates via the outflow opening with the heated room. The heated air in the hollow space, which flows through the heated room, is circulated by natural ventilation or forced ventilation.

Abstract: Apparatus for conditioning air of the constant volume type in which air gates are provided at the outlet ends of heat exchange passages and bypass passages to regulate the proportion of air passing through each of the pair of passages and therefore the temperature of air downstream from the air gates.

Abstract: A concept for reducing the number of parts in, and for simplifying the assembly of, a plate and fin type heat exchanger in which a fluid makes plural passes at least at one level of the heat exchanger. A single layer of a secondary heat transfer material replaces multiple detail parts of the prior art and is appropriately configured in conjunction with flow divider members to assure continuous fluid flow to and between fluid passes.

Abstract: An apparatus for providing active cooling for semiconductor wafers during implantation in an ion implantation chamber includes a housing incorporating a convexly curved platen. The platen has a coating of a pliable thermally conductive material adhered to the surface thereof. A clamping ring is mounted within the housing in slidable relationship with the convexly curved platen so that the travel of the clamping ring ranges between a receiving position wherein the clamping ring and the convexly curved platen define a slot for receiving a semiconductor wafer and a locked position wherein a semiconductor wafer is firmly pressed against the convexly curved platen by the contact of the clamping ring against the semiconductor wafer at its circumferential edge. In the locked position the wafer substantially conforms on its back side to the contour of the convexly curved platen. An active cooling means is provided for transferring thermal energy away from the platen.

Abstract: An automatic thermal switch to control heat flow includes a first thermally conductive plate, a second thermally conductive plate and a thermal transfer plate pivotally mounted between the first and second plates. A phase-change power unit, including a plunger connected to the transfer plate, is in thermal contact with the first thermally conductive plate. A biasing element, connected to the transfer plate, biases the transfer plate in a predetermined position with respect to the first and second plates. When the phase-change power unit is actuated by an increase in heat transmitted through the first plate, the plunger extends and pivots the transfer plate to vary the thermal conduction between the first and second plates through the transfer plate. The biasing element, transfer plate and piston can be arranged to provide either a normally closed or normally open thermally conductive path between the first and second plates.