Abstract: A heat exchanger comprising a rectangular exchanger pack which consists of a plurality of individual, mutually spaced, foil-type plates which have triangular corner notches and are connected with one another in sealed manner on marginal strips which extend between the corner notches in pairs on two opposite plate margins for the formation of alternately crossing flow-through passages between the plates, and comprising a frame housing surrounding the exchanger pack comprising two covers disposed adjacent the outer plates of the exchanger pack and four struts connecting the covers at their corners. The marginal strips to be connected of each two adjacent plates of the exchanger pack rest flatly upon each other and are mechanically connected with each other by folding over at least once. The struts of the frame housing define a triangular recess on their side facing the edge of the exchanger pack. The pack edges with the corner notches project into these recesses.

Abstract: A protective device is provided for heat emitting structures including but not limited to exhaust manifolds for internal combustion engines. A protective device comprises a double-wall protective screen consisting of two metal sheets which are spaced apart and substantially parallel. The space between the metal sheets is bridged over to support these sheets against each other. The sheets are sealingly connected along their edges so that they enclose between the support points at least one coolant space connected to at least one coolant connection arranged on the edge of the protective screen.

Abstract: Nuclear reactor exchanger which assures the transfer of heat between two streams of coolant sodium. It includes an outlet connector which channels coolant sodium leaving a bundle of exchanger tubes traversed on the inside by the sodium and immersed externally in coolant sodium, and an inner tubular jacket forming a surface of revolution about a vertical axis and an outer tubular jacket. The wall of the inner jacket has a folded portion distinguished by at least one flank in the form of a crown.

Abstract: Component for a heat exchanger which exchanges heat between the environment and a liquid, having at least one tube for receiving the liquid, and at least one heat exchange surface heat-conductively connected to the tube, the heat exchange surface including a multiplicity of plate elements fastened to the tube, the plate elements being disposed in a row side by side and overlapping each other in adjoining regions.

Abstract: A rotary heat exchanger characterized in that a spherically coiled heat transfer bypass tube is provided concentrically about a reflux type heat transfer double-tube at a part thereof, the outer tube of the double tube being rotatable, wherein a suction tube is provided around the outer tube within the spherical space defined by the bypass tube, said suction tube incasing screw vanes secured to the outer periphery of the outer tube, whereby convection is induced within the spherical space by the rotation of the outer tube. With the exchanger, good heat exchange efficiency is attainable without scaling.

Abstract: A heat exchanger, intended for use in hot water heaters, in which a tank and a hot water inlet pipe are formed integrally with each other, at a junction of which is placed a valve for control of the flow rate of hot water. The valve has a valve body disposed in close contact with a valve seat for rotation about its own axis relative thereto. Secured to the valve body is a rotary shaft which can be operated from outside. The valve body and the valve seat have respective through holes formed therein which can register with each other with their registered area variable to vary the flow rate of hot water with a change in the registered area of these through holes. The valve body is adapted to be placed in tight contact with the valve seat substantially solely by the pressure of hot water in the inlet pipe.

Abstract: A radiator comprising a number of parallel cooling medium pipes having fin stacks secured thereto in which a metal strip of the desired width dimensions is zigzag folded to form a stack having successive fin parts and side parts, each fin part being divided into stepwise parallel portions by additional fold areas parallel to the side parts.

Abstract: An undulating prismoid module made of relatively rigid material. The prismoids may have bases of any number of sides, and preferably a plane passing through the centers of the prismoid bases in any row of prismoid bases is nonparallel to the sides of the module. The modules may be stacked and fluid inlets and outlets provided in the void volume between modules so that the modules may be used as a heat exchanger, an extraction tower, absorption towers, distillation towers, an adsorption tower, chemical or bilogical reactors, and water cooling towers. The modules are disposed in repeating patterns of four in the stack, each module in the stack being rotated 180.degree. about a first or second horizontal axis with respect to the previous model.

Abstract: A heat exchanger comprises a plurality of first plates clamped in a frame-work. The plates are generally rectangular and have an opening at each of their corners, said opening forming together with corresponding openings of adjacent plates a first manifold duct for a heat exchanging fluid. A plurality of second plates have a recess at one or more of their corners, said recess corresponding to said openings of the first plates. A connection piece connected to said first manifold duct is clamped in the space formed by the recesses. All the plates have an additional opening forming a second manifold duct through which said first manifold duct is connected to the heat exchanging passages.

Abstract: A readily fabricated, compact toroidal or radial heat exchanger assembly (10) including fore and aft ring-like distributor tanks (11,12) and a generally circular core assembly (13) sandwiched therein between. The heat exchanger assembly (10) additionally includes a rotary blower (14), positioned radially inwardly of the core assembly (13) and distributor tanks (11,12), which is adapted to draw air axially and force the same radially outwardly through the core assembly (13) and around the distributor tanks (11,12). The ring-like distributor tanks (11,12) are provided with the interior and exterior fins (44,39) which function as heat transfer surfaces and thus the tanks (11,12), per se, are utilized as heat dissipating means along with the core assembly (13).

Abstract: A tube-bundle heat exchanger which allows replacement of the tubes. The heat exchanger tubes are held and sealed into a replaceable sealing arrangement consisting of an elastic sealing tube plate and two rigid tube plates arranged on either side which press the elastic sealing tube plate in the axial direction sealing the tubes. Force may be transmitted to the rigid tube plates by external means or by operating pressure of the media flowing in the heat exchanger.

Abstract: When plate heat exchangers are used with hazardous fluids the gasketing at the periphery may be replaced by welding the plates in pairs, with elastomeric gaskets between adjacent packs of plates. However, it is still necessary to have a gasket around the through holes (6) for the hazardous medium to seal them from the other medium. In accordance with the present invention, these gaskets are of duplex form (8, 9) with a sealed space (11) between the gasketing. In order to detect leakage into the sealed space a diluent fluid may be circulated through the sealed spaces and a detector, refer to FIG. 2.

Abstract: A supporting grid for tubes comprising a central reticular structure formed of main and secondary intersecting strips, an inner annular frame formed in the same material as the strips and so designed as to receive with a tight fit the ends of said strip therein, said inner frame being higher than the reticular structure so that upper and lower projecting portions are created together with cleaning ducts, and an external annular frame formed of a different material and consisting of an external box ring and of an external cover ring capable of receiving and containing therein said projecting portions of the inner frame, axially extending and inwardly facing dogs being provided at the inner portion of said external frame; the inner frame and the external frame being assembled so that at room temperature said dogs of the external frame fit tightly to the inner cylindrical surface of said projecting portions while play exists between the external cylindrical surface of the inner frame and the internal cylindrical

Abstract: A heat exchanger, particularly for use in heat pumps, either as an evaporator or as a condenser or both, comprises for the flow of a refrigerant one or more pipes helically coiled around a core pipe. This structure is mounted inside a mantle-pipe which serves for the flow of a heat carrying medium, such as water, and is helically coiled around a vertical axis or bent to another compacted shape making the center line of the turns of the helically coiled pipe or pipes extend horizontally or at a slight inclination to the horizontal. The refrigerant is fed to one end of the helically coiled pipe or pipes and then flows back through the core pipe. The heat carrying medium flows through the mantle-pipe in the same general direction as the flow of refrigerant through the helically coiled pipes.

Abstract: A tube support embodying a plurality of supporting members, each having grooved opposite side members with a crossbar extending therebetween, the supporting members being disposed in inter-locked relation to each other, with the crossbars being vertically spaced from each other to support tubular members thereon, and with the crossbars of upper supporting members extending down into the grooves in immediately underlying members.

Abstract: A thermal energy transfer apparatus and method to efficiently transfer thermal energy between two or more media, such as plural fluids, a fluid and a solid, two solids, etc. A thermally conductive mesh-like member provides relatively large surface areas for energy transfer therethrough. In one embodiment the mesh-like member disperses a fluid flowing therethrough while simultaneously effecting efficient and substantial thermal energy transfer therewith. A pair of thermally conductive generally solid discs direct the fluid into and receive fluid from the mesh-like member while also distributing thermal energy in the mesh-like member and/or transferring thermal energy with respect to the latter, for example, to a source or dissipator of thermal energy.

Abstract: An industrial cooling exchanger used for cooling air or another gas comprises an inlet collector and a return collector connected by heat exchanger elements dismountably assembled to said collectors by insertable parts. The collectors are floatingly mounted and a tight assembly between the collectors and the heat exchanger elements is provided by interposing therebetween at least one deformable gasket.

Abstract: The present universal radiator assembly is intended to accommodate or to be used as a replacement for many different types of automobile radiators. The main assembly includes a conventional radiator core and two semi-cylindrical tanks made from sheet metal. The tnaks may be partially formed and then the flat side of each tank may be soldered into position to permit free passage of fluids from the radiator core into the tanks. Then the free edges of the sheet metals member may be bent around into engagement with one another. These edges are severely bent or flanged, and are locked into engagement with a longitudinal lock rod of triangular cross-section which is open on one side. The tanks are then longitudinally soldered along the mating edges. The four ends of the two semi-cylindrical tanks are closed by mounting flanges having a large central aperture.

Abstract: A steam surface condenser has its tube bundle arranged in a manner so as to have an outer zone of tubes for receiving cold water and surrounding an inner zone of tubes containing warmer water so that most of the condensing of the steam is in the outer zone. A gas cooling section is located in the outer zone adjacent the upper end of the tube bundle. Condensate trays are provided adjacent the cooling section at spaced points along the length of the tube bundle for receiving condensate. Conduits are provided for conveying the condensate from the trays to the exterior of the shell so that such condensate does not contaminate condensate in a hot well.

Abstract: A finned heat exchange tube is made from a refractory metal such as titanium, titanium alloy, stainless steel, and iron-nickel alloy containing more than 10% nickel, by rolling into the outer surface of a tube of said metal integral fins having a low fin height of less than 0.045 inch (preferably less than 0.033 inch in titanium and less than 0.045 inch for stainless and the iron-nickel alloys), a high fin density of at least 26 fins per inch of tube length (preferably from 27 to 30 fins per inch), and a high fin surface area per unit length of tube which is at least 2.4 times greater than the comparable surface area of the tube prior to finning. The thickness of the tube wall underneath the finned area preferably is made less than the height of the fins.