Abstract: A rollable heat exchanger includes parallel fluid-carrying passageways which are connected with each other by elastic webs. Attached to the passageways-near side of the webs is a filler material which flatly covers the passageways and is of flexible, elastic composition so as to allow coiling of the heat exchanger. Thus, the heat exchanger can be used for a wide range of applications, in particular for covering a surface and/or bridging hollow spaces, especially sporting surfaces and recreational surfaces.

Abstract: The invention relates to a temperature-gradient incubator for studying temperature dependent phenomena, such as temperature ranges for the growth of microbes, comprising a temperature-gradient plate (10) serving as a reaction substrate and heat transfer elements (17 and 18) extending along the opposite edges of the temperature-gradient plate (10) for the heating and cooling of the edges of the temperature-gradient plate (10). Each heat transfer element (17 or 18) is provided with two passages for the circulation of a heating and/or cooling medium. Gable elements (9, 16) connect the passages to each other. The gable elements (9, 16) and pipe joint elements (6, 13) are separated from the ends of heat transfer elements (17, 18) by rubber sheets (1) which serve to provide heat insulation and sealing and are provided with holes (2, 3) for the circulation of a medium.

Abstract: The invention relates generally to a gas purification system for the purification of noble gasses and nitrogen. An improved method of purification generally includes the following steps: (a) heating an impure gas; (b) contacting the impure gas with an impurity sorbing material to produce a purified gas; (c) cooling the purified gas to a temperature less than about 100.degree. C.; and (d) contacting the purified gas with a hydrogen sorbing gas to remove residual hydrogen. The system includes an improved heat exchange apparatus for cooling the purified gas and a low temperature hydrogen sorption apparatus.

Abstract: A eutectic beam, and method of constructing same, which includes a plastic housing, a eutectic solution, and a generally U-shaped evaporator tube having first and second spaced leg portions, ends of which extend outside the housing. The leg portions of the evaporator tube are supported by spaced plastic support elements which include cylindrical portions which snugly but slidably encircle the leg portions, and which further include support legs which extend outwardly from the cylindrical portion and are bonded to the housing. In a method step, the plastic support elements are positioned within a rotational mold at the time the plastic housing is formed, with the plastic support elements locating and supporting the evaporator tube within the mold cavity, and with the outer ends of the support legs becoming embedded in walls of the housing during rotational molding.

Abstract: A high efficiency fuel-fired condensing furnace is provided with a compact recuperative heat exchanger structure comprising a metal primary heat exchanger positioned above and operatively connected to the inlet side of a secondary heat exchanger formed from a polyetherimide (PEI) plastic material. The primary heat exchanger is formed from a horizontally spaced series of vertically serpentined metal combustor tubes, and the second heat exchanger if formed from horizontally spaced apart injection molded inlet and outlet collector boxes interconnected by a horizontally spaced series of elongated hollow extruded plate members sealingly secured at their opposite ends to the collector boxes with the side edge-to-side edge widths of the hollow plate members being vertically oriented. The outlet ends of the metal tubes are operatively connected to the plastic inlet collector box.

Abstract: An improved atmospheric vaporizer/heat exchanger adapted for vaporizing cryogenic liquids includes a heat exchange element having a tube through which the cryogenic fluid flows and a plurality of fins attached to the tube. At least some of the fins include on their edges a rail or like member which has substantially flat surfaces. Brackets interconnect the fins of the heat exchange elements through channel shaped members disposed on two parallel edges. The channel shaped members of the brackets are configured to be complementary to the rails and have complementary substantially flat surface which mate with the matching flat surfaces of the rails and thereby substantially prevent rotation of the heat exchange elements relative to the brackets. After assembly, the matching rails and channels are deformed in sections by crimping or the like, to prevent sliding of the brackets on the rails and to obtain a finally assembled structure.

Abstract: A corrugated sheet formed from a thermoplastic polymer is disclosed. The sheet has a plurality of fluid flow passages through each corrugation. At least one slope, and preferably both slopes, of each corrugation has a plurality of slits in side-by-side arrangement extending through the sheet, with the fluid flow passages being formed by displacement of the thermoplastic polymer between each pair of slits relative to the thermoplastic polymer between the pairs of slits adjacent thereto. One example of use of the corrugated sheet is in a panel heat exchanger, to cause turbulence in fluid passing through the heat exchanger. The preferred thermoplastic polymer is polyamide.

Abstract: Boiler tube studs of composite construction, particularly for protecting waterwall tubes in pulp mill recovery boilers. The studs include an inner solid cylindrical core of a material having thermal conductivity sufficient to provide proper heat transfer to the boiler tubes during operation, and an outer cylindrical sleeve of a material resistant to destructive conditions within a boiler during operation, such as chemical attack and abrasion. The sleeve surrounds the cylindrical surface of the core, but leaves an end surface of the core exposed. The core may be made of low carbon steel, and the sleeve of stainless steel. In order to avoid melting of the stainless steel sleeves when the studs are welded to the tubes, the cylindrical sleeves do not extend all the way to the attachment end such that axial gaps are defined where the sleeves do not cover the cylindrical surfaces of the cores.

Abstract: A heat exchanging device includes two heat exchangers, each of the heat exchangers including a metal plate and a pipe attached to the plate for conducting a heat exchanging medium, the plate with the pipe being bent into a winding, and the heat exchangers being arranged with respective axes of winding aligned with each other and with any opposite faces of the heat exchangers positioned with a specified distance not to come in contact with each other.

Abstract: A braided fiber reinforced composite, particularly a braided graphite fiber reinforced copper composite leading edge heat exchanger 18 is disclosed, formed of inlet and outlet conduits 22 and 24 and means forming a plurality of passages 26 interconnecting the conduits, as a single integral unit. The heat exchanger is formed by providing inlet and outlet manifolds 36 and 38, successively interconnecting a plurality of mandrels 40, 52 and 56 transversely between the manifolds and braiding reinforcing fibers 32 preferably having high elevated temperature strength and high thermal conductivity, e.g. graphite fibers, around each of the mandrels and the manifolds, the braiding progressing in a direction along the length of the manifolds. The resulting braided preform 58 is consolidated by introducing a matrix material of high thermal conductivity, such as copper or copper alloy, e.g.

Abstract: A ceiling construction comprising a frame built out of longitudinal girders 1 and cross girders 2 connected to the longitudinal girders. Tiles 3 are suspended in fields defined by the frames. Heat-exchanger elements 4 are arranged above the tiles 3. In order to assure that an as good as possible heat transfer between the heat-exchanger elements 4 and the tiles 3 is guaranteed, the tiles are mounted according to the invention on the heat-exchanger elements by means of holding magnets 8.

Abstract: An actively cooled device, such as a heat shield for a fusion reactor, includes elements (10) of a heat-resistant material, particularly graphite, each being provided with at least one recess having a circular cross section, particularly a groove (14), into which a cooling pipe (16) conducting a coolant is brazed directly and with surface contact. This produces an effective dissipation of heat from the elements and a more durable connection of the elements with the cooling pipe or pipes.

Abstract: A method of forming and apparatus for a heat exchanger having a body of aluminum alloy having two sides with a groove machined in the body in the shape of a heat exchange tubing but of a dimension larger than the tubing. The tubing is placed in the groove and the space between the tubing and the groove is filled with boron nitride whereby corrosion problems are minimized and heat transfer enhanced. The method includes the steps of forming the cavity in at least one side of the body for inserting a tubing of a dimension less than the cavity, precoating the tubing in the cavity by spraying with boron nitride powder in a carrier, placing the heat exchange tubing in the cavity and filling the space between the wall of the cavity and the tubing with boron nitride powder, and bonding the two sides together.

Abstract: An apparatus for ice slab making and maintaining is comprised of a plurality flat flexible base sheets laid side by side. Each sheet has a plurality of integral parallel vertical webs projecting upwardly thereof, the webs being in turn formed, at their upper edges with integral tubes running from end to end of the sheets. The full exterior surface areas of the tubes are exposed to the forming ice for maximum freezing efficiency. Low temperature fluid is circulated through the tubes by a refrigeration system. The sheets can be rolled without a reel into a cylindrical form of precise dimensions to allow for easy transportation and storage.

Abstract: A heat sink is created from a single or multiple lengths of compressed, corrugated fin, eliminating the need for a heat sink base plate. A length of corrugated fin is compressed in a fixturing operation to form a continuous top flat surface and a continuous bottom flat surface. After the fixturing operation, a bonding operation is performed to generate permanent continuous top and bottom flat surfaces on which elements requiring temperature control may be mounted directly, eliminating the cost and weight of a base plate.

Abstract: A heat-exchanging member of a dehumidifier designed and constructed for high-efficiency heat-exchanging is disclosed. The heat-exchanging member comprises two tubes which are united by a bridge having several openings thereon for efficient drainage of the waterdrops of condensate, and which are provided with a few projections for improving moisture-removing efficiency.

Abstract: A method of making a solar energy collector where the absorber plate, selective surface, and protective outer skin of the collector are formed by spraying molten metal particles onto a substrate and building a coating of metal up to a desired thickness. This process allows greater flexibility in permitting a greater choice of materials and geometric shapes to be used for manufacturing the collector. The process may also be used to create the individual components of the collector, i.e., body, absorber plate, or selective surface as well as a storage tank.

Abstract: The present invention provides a floor structure for heating a timber-framed house, with which the floor of the house can be kept warm for a while even after the circulation of hot water in the hot water pipe has been stopped, whereas the pipe can be reduced in length as well. In achieving an object as above, a floor structure for heating according to the present invention comprises: a wooden board; a wooden frame secured on the wooden board; a heat accumulating layer which is inserted and fitted inside the frame on the wooden board; a plurality of grooves extending from one edge of the wooden frame by way of the surface of the heat accumulating layer to the other edge relative to the one end thereof; and a metal plate which is inserted in these grooves, covers the surface of the heat accumulating layer and its contiguous surface of the wooden frame, and is fitted on the wooden frame.

Abstract: A heat exchanger particularly for solar water heating applications including a plurality of fluid conducting ducts separated by a plurality of webs which are spaced apart longitudinally to leave substantial regions of the ducts free of webs. The ducts are connected to supply and return manifolds via connectors, the connectors having recesses into which the ends of the ducts are inserted and retained when the connectors are inserted in apertures in the manifolds.

Abstract: A heat-pipe device for transferring heat generated by a heat-generating element, having at least one heat-pipe body which is an extrudate of plate-like configuration made of aluminum or its alloy, the heat-pipe body including a planer-structure portion which has on one side thereof a flat face to which the heat-generating element is directly fixed, the heat-pipe body further including a plurality of passage-defining portions which protrude from the other side of the planer-structure portion and extend parallel to, and apart a predetermined distance from, each other, each passage-defining portion having therein a flow passage which is fluid-tightly charged with a working fluid for transferring the heat generated by the heat-generating element. Also is disclosed a heat-sink device for cooling a heat-generating element, having at least one heat-pipe body including a planer-structure portion and a plurality of passage-defining portions.

Abstract: A linear panel unit for use on walls or ceilings capable of providing radiant heating and/or cooling. The panels have an external panel shell, which itself can be used as a passive panel, an extruded aluminum radiator panel resting in the shell with outward side in contact with the shell and an inward side in contact with a copper tube capable of containing fluids of varying temperature. Clips between bilateral troughs in the sidewall of the panel shell and the inward side of the radiator panel secure contact between rediator panel and the shell. The copper tube is grasped by projecting channel walls in the inward side of the radiator panel which also are tapered to facilitate positioning of the clips and a groove near the intersection with the radiator panel to secure placement of the clip. A panel unit wall or ceiling is created by interspersing radiant linear panels with identically appearing passive panel shells, the copper tubes of the active radiant panel units communicating with one another.

Abstract: A panel heat exchanger is provided that has a plate made of a heat-conducting material and at least one pipe connected with it, this pipe having a meandering shape, and through which a heat exchange medium flows. The plate is provided with slots the width of which is adapted to the diameter of the pipe. The pipe is inserted into the slots approximately flush with the plate and is held by deformations extending transversely to its longitudinal axis at the slot edges in a form-fitting way.

Abstract: A solar water heater especially intended for use with swimming pools, and comprising an inlet header, an outlet header, a strip of flexible material comprising a plurality of longitudinally extending tubes. Each end of the strip is connected to a respective manifold comprising a first side provided with a respective spigot for each tube in the strip, and a second side provided with less apertures than the number of spigots, such that, in use, the tubes at each end of the strip are connected to the spigots of the manifold and the apertures of the manifold are connected to a header, whereby fluid communication is established between the headers and the web.

Abstract: Individual elongated radiant heat panel modules are secured together along their side edges to form a panel; and a plurality of transverse spaced-apart stiffeners are connected at a plurality of connection sites across the panel back to stiffen the panel and hold it fast. Each stiffener is fixedly connected to the panel at only one fixed connection site whereby to block relative movement between the stiffener and panel at said site; and each stiffener is additionally connected to the panel at a plurality of connection sites by spring clamps which hold the panel and modules thereof flat against the stiffener while permitting limited relative movement thereat between said stiffener and said panel. The connection sites on the stiffener are spaced therealong while the connections to the panels are at or adjacent the side edges of the individual modules. Adjacent individual modules are fixed to each other.

Abstract: A heat exchanger for use for example in a laundry dryer comprises a plurality of plates defining flow passages therebetween for a first heat exchange medium. Each plate is made up of a plurality of aluminum elements having mutually co-operating positive and negative profilings at their narrow sides, to fit snugly together. The plates are held at a spacing from each other in grooves in end wall members forming a holding assembly. A second heat exchange medium flows through the hollow interiors of the elements making up the plates. The hollow interiors have web portions therein, to enhance heat flow between the first and second heat exchange media.

Abstract: A solar heat exchange system is fabricated from a manifold and a plurality of elastomeric tubular elements which are longitudinally connected into a mat. A one-piece molded plastic manifold having at least six parallel aligned radially extending nipples is mounted on a cylindrical tubular header. The spacing of the nipples is designed to correspond to the spacing of the tubular elements in the mat. The unit is assembled by applying liquid adhesive to the exterior of the nipples, and sliding the tubular elements of the mat simultaneously over the nipples while the adhesive is still fluid, and allowing the adhesive to set.

Abstract: An arena floor useful alternately as a support for a slab of artificially frozen ice, and, when free from ice, as a deck suitable e.g. for practicing gymnastics and various games, is composed of a plurality of elongate elements held together in side by side relationship on top of a flat supporting bed. The elongate elements, which somewhat resemble matched boards and add only a few centimeters at most to the height of the bed, are formed by extrusion in desired lengths from plastic and have selected cross sectional shapes including passages permitting the circulation longitudinally through the elements of a temperature controlling fluid. By suitably selecting the plastic used in extruding said board-like elements the resiliency and hardness thereof, and hence of the floor as a whole, may be varied to fit different kinds of activities.

Abstract: A heat exchanger element includes a single and integrally extruded member having at least two hollow tubes having parallel longitudinal axes, each two adjacent hollow tubes being connected by at least two webs which extend parallel to the longitudinal axes and which are formed integrally with each of the two adjacent hollow tubes. The webs have therethrough plural perforations, and the material of each web between adjacent perforations therein is deflected to form a rib extending at an angle to the web. At least one tube has formed integrally therewith a projecting track which extends parallel to the longitudinal axes. Plural heat exchanger elements are connected at the respective tracks thereof to form a tube bundle.

Abstract: A ceiling or wall unit comprises a plurality of juxtaposed aluminum plates, whereby one rim of each plate is optionally inserted in a groove of an abutting plate. According to the invention, each aluminum plate is provided with at least one cooling pipe shaped integral with the plate, inner longitudinal ribs being provided in the cooling pipe. In this manner the plate can be used for cooling a room, the temperature of which is too high on account of the outdoor temperature or heat-producing machines, the lighting or like equipment. The inner longitudinal ribs of the cooling pipes increase the inner surface of the cooling pipes whereby the dimensions of the pipes and consequently of the plates can be correspondingly reduced.

Abstract: A heat exchanger panel having vertical tubes (1, 2) which form loops between an inlet (1A) and an outlet (1B) via which they are suspended from a rigid structure (3, 4), and intended to come into contact via their outer surfaces with a soot-laden gas characterized in that its tubes are separated from one another at a pitch which is a little greater than their diameter, in that the tubes of the central portion are interconnected by fins, and in that the end tubes directly connected to the suspension structure are fixed to one another and to the nearest adjacent tube by short members (14, 15) welded on either side to adjacent tubes (21, 22, 23) at a level below that of the top loops of the panel, and are connected to one another and to the adjacent tube below the fixing members by fins (26).

Abstract: A linear radiant ceiling panel and method of manufacturing and providing a plurality of elongated, extruded panels located in spaced relationship and comprising an extruded aluminum plate member having a saddle adapted to receive and hold a copper tube having heat conducting fluid circulating therein. The extruded plates have channels on each side of the saddle to receive a fastener and connect the plates to a supporting grid structure in a room. The side margins of the channel are adapted to connect with a removable linear sheet metal member which is a thin piece of metal that connects to the outer surface of the extruded sheet to provide an attractive, replaceable ceiling component exposed to the interior of a room.

Abstract: A heat transfer and storage system including a storage chamber containing a phase change material, a water heater having a first conduit in which the potable water is conveyed, and a solar collector having a second conduit through which a heat transfer liquid is conveyed. Portions of the first and second conduits extend through the storage chamber in adjacent heat conducting relationship with fin means interposed therebetween and extending into the phase change material, and connecting means are provided for holding the conduits and the fins in place. A control system is provided for independently controlling the flow of the heat transfer liquid and the potable water in response to the sensed temperature of the phase change material, the heat transfer liquid and the potable water. The storage chamber is provided with an ullage bag for accommodating the expansion and contraction of the phase change material without exposing it to ambient air.

Abstract: A thermal radiating system particularly suited for use in space applications is provided with a high ratio of heat transfer to weight and a thin and light weight construction. The radiator includes heat pipes that are spaced to minimize damage from micrometeorites and through which a heat transfer medium is circulated from a heat generating source. Graphite fibers are used for their small mass per unit area and are preferably of a heat treated type having a substantially improved thermal conductivity over conventional graphite fibers. The graphite fibers are associated with the heat pipes and constitute the principal radiating surface of the system. In one embodiment, the graphite fibers are disposed in substantially parallel, co-planar relationship with respect to each other and in substantially perpendicular relationship to their associated heat pipe, thus giving the radiator in the array the appearance of a comb.

Abstract: A freezing unit has one or more vertically arranged freezing plates having a plurality of rib-like partitions extending in the downflow direction of the ice-making water, and a meandering cooling coil contacted with the reverse side or sides of said freezing plate or plates and composed of a plurality of straight sections connected together by bends. The straight sections are flattened on lateral side portions, while at least the terminal portions of the bends contiguous to the straight sections are flattened on lateral side portions to a thickness approximately equal to the thickness of the flattened lateral side portions of the straight sections. The flattened lateral side portions of both the straight sections and the bends are contacted with the back side or sides of the freezing plate or plates.

Abstract: A tubular heat exchanger blank is comprised of a one-piece body portion having a plurality of elongated tubular members disposed in side-by-side relation to each other. Each of the tubular members includes a sidewall with the sidewall of adjacent tubular members being connected together by portions which are lesser in thickness than the adjacent sidewall and which extend the length of the body portion. The heat exchanger blank permits initial forming operations upon a plurality of elongated tubular members and subsequent manufacturing and separation steps to occur during the manufacture of heat exchanger elements.

Abstract: A cooler made of aluminum for use in Stirling engines comprises a multiplicity of cooling tubes, a pair of headers joined to opposite ends of the cooling tubes, inner fins provided in the interior of the cooling tubes, a multiplicity of plate fins intersecting and attached to the group of cooling tubes, and a shell surrounding the cooling tubes and the plate fins. The shell is joined to the headers and has an inlet and an outlet for cooling water.

Abstract: A method of securing a tube, such as a condenser tube for a refrigeration cabinet, to the inside of the outer walls of the cabinet by means of direct welding between the tube and the oil panel of the cabinet. The tubing is formed to the desired configuration and a plurality of projections are formed on the tube for welding to the surface by a crimping action which indents the sidewalls of the tube at each weld location to produce a projection beyond the normal tubing wall while the rest of the tubing remains undeformed. Subsequently, the configuration of tubing is placed on the sheet and resistance-welded under conditions to produce a relatively light weld adhesion with a small weld nugget that does not create any significant discoloration or distortion on the other side of the sheet which becomes the finished exterior surface of the cabinet.

Abstract: A conduit is arranged in a generally serpentine configuration and is provided with a plurality of heat transfer elements which are disposed interjacent spaced parallel sections of the conduit. An application of the assemblage consisting of the aforesaid serpentine conduit and associated heat transfer elements is a solar collector for use with solar heating systems and the like.

Abstract: A solar collector for integral attachment to framing members of a structure comprising a base panel attached to and extending between an adjacent pair of the framing members. The collector includes collector plate which comprises an inlet and an outlet end, a web with opposite side margins and a tubular fluid conduit terminating and open at the collector plate ends. Attachment means is provided for slidably retaining the collector plate to the base panel whereby relative movement therebetween is allowed in response to thermal expansion and contraction of the collector plate. A transparent cover is attached to the framing members and positioned in spaced relation outwardly of the collector plate.

Abstract: An elongated channel-shaped structure, preferably of anodized extruded aluminium, is suitable to form the load bearing beam of a false ceiling assembly, in particular comprising absolute filters for the so-called "clean rooms". Such a structure is U-shaped and comprises an elongated and uninterrupted central slot or groove for the fixing to the ceiling, with the concavity of the U-shape directed downward, having outer lateral finnings for the cooling, outer grooves and projections for the coupling with transverse spacers and for supporting absolute filters, as well as inner grooves and projections for supporting electric lines, pipes and other devices and systems. There are also provided extension members directed downward, to be fastened to said structure and having further support and guide fit grooves.

Abstract: A cold surface for cryogenic pumps in the form of a (filled/through-streamed) double wall which is acted upon by a liquid refrigeration medium, as well as to a process for the production of such a cold surface. The double wall is formed by a series of thin-walled narrow tubes which are interconnected with each other, to which there are presently attached thin axially parallel, good heat conductive metal lamellas, wherein the tube diameter, tube spacing and wall thickness, as well as the lamella thickness, with consideration being given to a minimization of the total mass of the surface, are so correlated and dimensioned with respect to each other that the temperature differences within the lamellas of the surface which is acted upon with liquid refrigeration medium at a maximum occuring heat loading will remain below 0.1.degree. K.

Abstract: A heat exchanger module, such as a solar collector module, comprising a tube sheet (3) connected to a header (4). The tube sheet (3) passes through an opening in the header (4) so that the end of the sheet (5) protrudes a distance into the header (4), the header opening being united to the surface of the tube sheet (3) so that the tendency of the tube sheet (3) to burst or split open in the region of the junction of the tube sheet and header is minimized when the module is under fluid pressure. By the term "tube sheet" is meant a substantially planar sheet having an upper and a lower plastic membrane interconnected by a series of spaced division walls thereby forming a series of tubes arranged generally in a flat plane across the sheet, the tubes being continuous through the sheet and open at the two opposite ends of the sheet. The term also includes a sheet of circular tubes joined in side-by-side relationship.

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 heat exchange assembly such as for a solar roof comprises a pipe carried by a carrier plate and held thereto by suitable holding means. The carrier plate and/or the holding means have openings, each opening having a jagged edge portion projecting perpendicularly to the surface of the component in which it is formed. The jagged edge of each opening is partially embedded into the other component and material from that other component is engaged into the opening to form a rivet head-like configuration thereby to anchor the two components securely together.

Abstract: A heat transfer tube for a water-spray-panel evaporator for the gasification of liquefied natural gases which includes a tube having a pair of planar members each projecting outwardly from its peripheral surface, radially with respect to its longitudinal axis and extending longitudinally along such axis, and an internal fin disposed within the tube and having at least three fin members each projecting radially with respect to the longitudinal axis to provide a helical formation extending along and about the longitudinal axis, the helix of the helical formation contacting the internal wall of the tube in a pressure-fitting relationship. The heat transfer tubes can be assembled to form a panel evaporator. The method for fabricating such heat transfer tubes and assemblies is characterized in that the above pressure-fitting relationship is established by drawing the tube alone to reduce its internal diameter until the helix of the helicoid is abutted against the internal wall of the tube.

Abstract: The solar collector comprises a plurality of chambers connected to one another through interconnecting ducts, said chambers being defined, on the upper side of the collector, that is the side facing to the sun--by transparent outwardly- convex surfaces, hile the pipes of the piping system enclosed within the housing extend through the chambers and the interconnecting ducts.On the lower side of the collector, the chambers and interconnecting ducts are defined by inwardly-reflecting surfaces which have an outwardly-convex configuration.

Abstract: A radiant panel and method of manufacturing which provides a panel construction for absorbing and emitting heat and including an extruded sheet member having a front surface and a back with the back having extruded upstanding saddles providing a concave shape adapted to receive a copper tube. A heat conducting adhesive is used to bond the copper tube to the saddle and also improve heat transfer characteristics between two members. The back surface of the panel also includes pairs of extruded channels located on each side of corresponding saddle and extending parallel therewith. A crossbrace is located transverse to the channels and held securely in place by fasteners which extend through the crossbrace and into the channels to urge the copper tube into each saddle and hold adjacent panels in a plane to provide a continuous, smooth-appearing surface on the interior of a room.

Abstract: A low-cost method of fabricating a solar absorber panel for use with a flat plate solar collector system is disclosed in which a plurality of formed elongated substantially U-shaped members are fixed in a predetermined configuration to the reverse side of a single sheet absorber member forming therewith hollow fluid passages or ducts. The fluid duct members are provided with a series of tabs which alternately protrude through spaced slits in the absorber panel such that when the tabs are folded over, a tight interlocking construction is produced. The ends of the single sheet absorber may then be folded to form inlet and outlet manifolds connecting the ends of the series of spaced ducts including closing end tabs or the manifolds may be fabricated of U-shaped tabbed members in the manner of the connecting passages. After the mechanical assembly, the entire unit is sealed as by pumping liquid solder under pressure through the unit.

Abstract: A solar energy absorbing-heat exchanger device includes a copper tube and first and second identical copper sheets, the two sheets having semi-cylindrical curved surfaces which together fully enclose the tube and the sheets otherwise being essentially flat. Each sheet is joined to the other directly adjacent to and on opposite sides of the tube by two roll-formed seams. The roll-formed seams hold the sheets about the tube in tension to maintain contact between the tube surface and curved surfaces of the sheets. The semi-cylindrical curved surfaces may be roll-formed, as may be narrow channels and angular turns in each sheet which, when interengaged, are roll-formed toward the enclosed tube to form the two seams. The seams may include the use of solder, stiffener grooves may be added to the flat parts of the copper sheets, and channels may be added at the ends of the sheets remote from the enclosed tube to connect a number of such devices together.

Abstract: A device is provided for heating a room by convection using the heat from a conventional radiation heat source. The heating device further acts as a fireplace guard when the heat source is a fire to substantially prevent sparks or other small particles of combustion from entering the room in which the fireplace is located. The device includes a threshold unit and a plurality of spaced pipes. The pipes are supported by the threshold unit while a screen member such as metal gauze is connected between the pipes. An opening in the threshold unit is adjacent the floor surface of the room in which the heat source is located. The radiation from the heat source raises the temperature of the pipes while relatively cool air enters the opening in the threshold unit and passes into the pipes. The temperature of the air is increased by the heated pipes and exits from the top thereof to heat the room by convection.