Abstract: In a hydronic heating system including a heating element that is a length of tubing that conducts water and is against a radiating metal plate, all mounted in a floor, wall or ceiling, the element being held by two spaced apart providing an elongated space for holding the tubing adjacent the plate, the metal plate is in two separate pieces that are attached to an edges of the spaced apart boards and combine when they abut each other at installation to provide a metal groove into which the tubing is inserted and held snugly with a substantial part of the tubing in direct intimate thermal contact with the metal.

Abstract: A mobile heating system for providing hot liquids is provided. The system includes a trailer mounted liquid boiler, an exit manifold for distribution through hoses, a return system communicating with a return manifold in communication with a reservoir for storing heated liquid and a bypass valved shunt such that by providing incremental heat through the liquid boiler back to the reservoir via the bypass valved shunt and then back to the boiler through the exit manifold and back to the reservoir by means of the return manifold, sufficient energy is maintained to allow atmospheric 205+ degree liquid to be circulated within the system. In one aspect of the system, by means of contact with the hot hoses, a substance is used for thawing ground, heat, melting snow and ice, curing cement, and the like. In another aspect, the liquid is water used to provide for example, hygienic liquid or hot water for field showers.

Abstract: Ceiling apparatus for heating or cooling a space includes one or more spiral shaped coils mounted to individual thermally conductive ceiling tiles suspended above the space to be heated or cooled. The spiral shaped coils are interconnected by flexible hose connections so as to define one or more paths of a heat exchange fluid flowing through the coils so as to provide or remove heat from the ceiling tiles.

Abstract: A mounting plate for securing the heating pipe of a radiant heat system to the subfloor. The plate is a flat sheet with a groove in the upper surface and a plurality of legs underneath. The plate is composed of a rigid and highly heat-conductive material, preferably aluminum and aluminum alloys. The legs form large air gaps which can be left empty or filled with insulation to raise the efficiency of the system. The groove runs from one edge of the plate to another. The bottom of the groove is preferably semicircular, with a diameter the same as the outside diameter of the pipe so that heat transfer is maximized. The pipe is retained in the groove by a ridge running the length of the groove or by forming the groove in an omega shape so that the pipe must be snapped into the groove.

Abstract: In a hydronic radiant heating and/or cooling system modular panels each of a metal plate or sheet on a board or boards providing a slot into which tubing is inserted and held against the plate in intimate thermal contact therewith, so that the plate is heated/cooled by conduction of heat between the water in the tubing and the plate, the improvement in which two or more of said panels are hinged together, side by side or end to end to provide a hinged set of panels so that two or more of sets of hinged panels unfolded at their hinges and arranged side by side on a floor, wall or ceiling provide elongated spaces into which said tubing is inserted and held against said radiation plate a finished floor, wall or ceiling covering can be installed thereon and said system operated to heat or cool said room.

Abstract: A mobile heating system for providing hot liquids is provided. System includes a trailer mounted liquid heater, an exit manifold for distribution through hoses, a return system communicating with a return manifold in communication with a return reservoir for storing heated liquid such that by providing incremental heat through the liquid heater to the return material sufficient energy is maintained to allow atmospheric 220+ degree liquid to be circulated within the system. In one aspect of the system, by means of contact with the hot hoses, a substance is used for thawing ground, heat, melting snow and ice, curing cement, and the like. In another aspect, the liquid is water used to provide for example, hygienic liquid or hot water for field showers. In a further aspect, the apparatus can be hooked into the hose line to provide for example, radiated heat for convection into space, such as in construction of a building, house and the like.

Abstract: In radiant floor, wall and/or ceiling hydronic heating and/or cooling systems using metal radiation plates that are heated or cooled by attached tubing that is fed hot or cold water, where the system includes a plurality of aligned modular heating and/or cooling panels attached to the floor, wall and ceiling, each panel containing a metal radiation plate and each holds a length of the same tubing, the tubing being inserted into an accommodation in the panel and held therein in intimate thermal contact with the plate, and the assembly of panels with tubing inserted is covered with a finished floor, wall or ceiling and then hot water for heating or cold water for cooling is fed to the tubing, a thermal barrier is provided between the panels and the finished floor, wall or ceiling to: diminish or eliminate “hot spots” in the surface of the finished flooring, wall covering and ceiling covering during heating and “cold spots” during cooling; avoid condensation during cooling; and improve pe

Abstract: A heating system for an enclosed container or structure having a floor includes a tank underlying substantially the entire surface area of the floor and defining an internal cavity. A fluid inlet and a fluid outlet are interconnected with the tank and with a heater via inlet and outlet lines. The heater is located exteriorly of the structure, and provides heated fluid to the tank inlet which is circulated through the internal cavity of the tank and is discharged through the fluid outlet of the tank. Heat from the tank dissipates through the floor and into the interior of the container or structure. The structure may be in the form of a container for storing supplies such as petroleum products which are to be maintained above a certain temperature to provide proper viscosity, or the structure may be in the form of a hunting blind or ice fishing shanty. The tank is pitched such that the fluid inlet is at an elevation higher than that of the fluid outlet.

Abstract: In a hydronic radiant heating and/or cooling system modular panels each of a metal plate or sheet on a board or boards providing a slot into which tubing is inserted and held against the plate in intimate thermal contact therewith, so that the plate is heated/cooled by conduction of heat between the water in the tubing and the plate, the improvement in which two or more of said panels are hinged together, side by side to provide a hinged set of panels so that two or more of sets of hinged panels unfolded at their hinges and arranged end to end on a floor, wall or ceiling provide elongated spaces into which said tubing is inserted and held against said radiation plate a finished floor, wall or ceiling covering can be installed thereon and said system operated to heat or cool said room, the improvement wherein the panels of a set are arranged in a regular staggered relationship so that such sets unfolded and arranged end to end abutting each other interlock.

Abstract: A hydronic heating system having a source of hot supply water and a reservoir of cooler return water and one or more heating loops that include a heating element that is a length of tubing that conducts water from the supply to the return and the length of tubing is mounted in a wall or a floor of an area heated by the system by RFH or RWH, respectively, in a room includes: a highly thermally conductive plate having a radiating surface mounted in the area floor or wall, adjacent a surface thereof; a plate support of relatively low thermal conductivity material providing an elongated space for holding the length of tubing adjacent the plate; the elongated space being defined by two parallel sides provided by the plate support, a third elongated side provided by the plate and an elongated open side; the side provided by the plate being substantially wider than the open side; the tubing is inserted into the space through the open side thereof; and a compliant filler of relatively higher thermal conductivity mate

Abstract: A mobile heating system for providing hot liquids is provided. System includes a trailer mounted liquid heater, an exit manifold for distribution through hoses, a return system communicating with a return manifold in communication with a return reservoir for storing heated liquid such that by providing incremental heat through the liquid heater to the return material sufficient energy is maintained to allow atmospheric 220+ degree liquid to be circulated within the system. In one aspect of the system, by means of contact with the hot hoses, a substance is used for thawing ground, heat, melting snow and ice, curing cement, and the like. In another aspect, the liquid is water used to provide for example, hygienic liquid or hot water for field showers. In a further aspect, the apparatus can be hooked into the hose line to provide for example, radiated heat for convection into space, such as in construction of a building, house and the like.

Abstract: A heating element (12) is described for use in flooring, preferably for pigstys (3). The heating elements consist of a liquid filled chamber (16). The liquid in the chamber is brought into heat transmitting connection with a conduit (24) connected with a heat source. The connection between the conduit (24) and the chamber (16) do not have to be pressure tight, as no pressure occurs in the chamber (16). Therefore, a relatively simple connection may be established and there will only be a small risk of leakage.

Abstract: A plurality of air-conditioning panels (1), which are arranged one beside the other and parallel to one another and have a width of from 100 to 150 mm, each have, on the top side, a central longitudinal groove (4) for receiving a pipe (5). In order to form a stable, slow flow, which does not produce any undesired bursts of cold air, of the air cooled on the air-conditioning panels (1), the latter are bounded on both sides by shoulders (6) which bend downwards to the vertical and have a radius of curvature of not more than 20 mm. The borders of adjacent air-conditioning panels are spaced apart from one another and form between them air gaps having a width of from 10 to 20 mm.

Abstract: A system for cooling, heating and fire-protecting an enclosure or dwelling, consisting of six principal entities acting in cooperation. The first is an expansive system of wide, shallow ducting installed just outboard and against the innermost wall layers of the peripheral walls, ceiling and at times, the floor, thermally intimate but physically isolated from the interior volume of the enclosure. The second is an evaporatively-cooled air source, supplying the duct system, which cools the innermost wall layers and in turn, the interior volume, by radiation and convection. The third entity, being an encompassing layer of efficient insulation, just outboard of the ducting and within the enclosure, biasing the cooling and heating action to the interior volume. The fourth is a network of hot-water circulating tubes, lying within, or adjacent to said cooling ducts, and against the innermost wall layer, or inboard plate thereof.

Abstract: A flexible fluid-filled circulation conduit is selectively and removably connectable to a portable hot water heating system. The conduit is configured and arranged so that prior to connection to the hot water heating system, the conduit carries its own fluid supply under pressure within the conduit for circulation through the hot water heating system. Upon removable connection of the fluid filled conduit to the hot water heating system, fluid from the conduit immediately circulates under pressure with fluid from the hot water heating system through both the conduit and hot water heating system. Upon selective disconnection of the conduit from the hot water heating system, fluid within the conduit is retained under pressure within the conduit and fluid continues to circulate through the hot water heating system but is prevented from circulating through the conduit.

Abstract: A hydronic heating system that has a boiler supplying hot supply water, a reservoir of cooler return water, a supply water line, a return water line and one or more heating loops through which water flows from the supply line to the return line, the heating loop including a heating element that is a length of tubing that conducts water from the supply to the return and is mounted in a wall or a floor of an area heated by said system by RFH or RWH has: a thermally conductive plate mounted in the area floor or wall, adjacent a surface thereof and means for holding the length of tubing in intimate thermal contact with the plate, so that the plate is heated by conduction of heat from the tubing and the plate has a radiating surface that radiates heat to the area.

Abstract: In radiant floor, wall and/or ceiling hydronic heating and/or cooling systems using metal radiation plates that are heated or cooled by attached tubing that is fed hot or cold water, where the system includes a plurality of aligned modular heating and/or cooling panels attached to the floor, wall and ceiling, each panel containing a metal radiation plate and each holds a length of the same tubing, the tubing being inserted into an accommodation in the panel and held therein in intimate thermal contact with the plate, and the assembly of panels with tubing inserted is covered with a finished floor, wall or ceiling and then hot water for heating or cold water for cooling is fed to the tubing, a thermal barrier is provided between the panels and the finished floor, wall or ceiling to: diminish or eliminate "hot spots" in the surface of the finished flooring, wall covering and ceiling covering during heating and "cold spots" during cooling; avoid condensation during cooling; and improve performance.

Abstract: A method of installing piping of a floor heating apparatus according to the present invention relates to a method of installing a floor heating apparatus in which pipes for circulating heat medium liquid are located on a floor base structure and they are covered with a flowable floor substrate material. After an adhesive is applied on a surface of the floor base structure, a tube assembly is positioned on said adhesive so that the lower face of a base plate of the tube assembly is bonded to said floor base structure by means of said adhesive, the tube assembly having a plurality of tubes made of an elastic material and said base plate made of the elastic material which integrally carries said tubes. A self-leveling material is poured and extended on the tube assembly. According to such a construction method, a number of floor heating pipes can be quickly and simply installed on a floor surface and a density of installation of floor heating pipes can be relatively readily increased.

Abstract: A hydronic radiant heater bed warmer (RBW) is mounted in the support structure beneath the top surface of a conventional bed that has a mattress on springs supported by the bed support structure.

Abstract: A ceiling element for a heating and cooling ceiling, having a pipe (3) and a ceiling panel (1), comprises, for the purpose of producing good heat-conducting contact between these parts, a contact element (4), which is formed by bending sheet metal, consisting, for example, of a copper alloy, and a guide channel (5) which is open at the bottom and by means of which the contact element is snap-fitted onto the pipe (3). Provided on each of the two side borders of the contact element (4) is a row of contact fingers (6) which are produced by punching or chemical milling, are designed as thin elastically deformable strips, project downwards and outwards, fit snugly against the upper side of the ceiling panel (1) in each case and rest closely up against said ceiling panel even if it has irregularities.

Abstract: The present invention provides in combination, a radiant panel heating system, configured for ease of installation and maintenance which also provides the structural characteristics required of a subflooring panel within a floor framing system. The system consists of structural subflooring panels (2) with grooves arrayed in a modular geometry. The panels are overlaid with a heat-conducting surface embossed with a matching groove pattern. The panels are capable of being fastened to a variety of floor support structures (1) in a manner typical of subfloor panels, which fulfill a structural requirement only while simultaneously interacting to create an array of approximately evenly spaced grooves into which tubing (4) or wire of the type used in hydronic or electric radiant panel heating is installed.

Abstract: A system for curing composite structures. A hollow bladder having opposing open ends is secured within a metal pressure vessel so as to define an annular space within the vessel surrounding the bladder. The open ends of the bladder are sealably attached to opposing entrances formed in the pressure vessel so that the bladder is sealed from communication with the vessel and is accessible through the opposing openings. An uncured composite part can be inserted into the bladder. Preheated and pressurized fluid is circulated through the annular space and thus around the bladder in order to cure the composite part. The composite part may also be encapsulated within a forming bladder member which is then removably inserted into the pressure bladder.

Abstract: The invention provides a heat exchanger mat, comprising a twin-duct manifold having a duct member comprised of an inlet duct and an outlet duct, a tube-socket member fixedly and fluid-tightly attached to the duct member, and a return manifold having a deflector member and a tube-socket member fixedly and fluid-tightly attached to one another. The mat also includes a plurality of tubes for circulation of a heat-exchanging liquid medium, each tube fixedly and fluid-tightly joined at one of its ends to the tube-socket member of the twin-duct manifold and at the other one of its ends to the tube-socket member of the return manifold. One end of each odd-numbered one of the tubes communicates via at least one aperture with one of the twin ducts, and one end of each even-numbered one of the tubes communicates via at least one other aperture with the other one of the twin ducts, and the other ends of all of the tubes communicate with the return manifold.

Abstract: A hydronic heating system that has a boiler supplying hot supply water, a reservoir of cooler return water, a supply water line, a return water line and one or more heating loops through which water flows from the supply line to the return line, the heating loop including a heating element that is a length of tubing that conducts water from the supply to the return and is mounted in a wall or a floor of an area heated by said system by RFH or RWH has: a thermally conductive plate mounted in the area floor or wall, adjacent a surface thereof and a space defined at least in part by said plate, in which the length of tubing is held and a compliant filler material fills the space between the tubing and the plate, so that the tubing is held in the space in intimate thermal contact with the plate, so that the plate is heated by conduction of heat from the tubing and the plate has a radiating surface that radiates heat to the area.

Abstract: A hydronic heating system for radiantly heating habitable space is disclosed. The radiant heating system uses heated fluid circulated through under-floor or in-wall endless pipe loops and heat radiation fins which clip onto the pipe loops. The system permits heated fluid to be circulated at boiler temperatures, obviating a requirement for mixing valves, heat exchangers or buffer tanks, because the endless pipe loop is spaced away from the wall or floor and all heat is exchanged through convection by air surrounding the heat radiation fins. The advantages include a more affordable heating system due to less pipe, fewer components and faster installation. As well, the system provides a more even heat distribution and the eliminates hot spots. Furthermore, the endless pipe loops are spaced from the floor or wall surface, and thereby protected from danger of puncture by a nail or screw driven through the surface.

Abstract: An extruded aluminum radiant heat transfer plate includes an integral elongated receptacle for holding and confining a plastic tubing. The aluminum radiant heat transfer plate is extruded to provide heat transfer side edges in the form of thin-walled fins running the length of the extrusion. Between the fins, the extrusion provides the elongated receptacle for the plastic tubing. The receptacle can take the form of a "C" (as it appears in cross section) that stands above the plane of the heat transfer fins. The receptacle, alternately, can take the form of a "U" (as it appears in cross section), the legs of which integrally connect to the fins.

Abstract: A pre-wired and pre-plumbed module for connection to an installed hydronic radiant floor heating system including a supporting frame having components mounted thereon such as a boiler, pumps, four-way valve, in-line air separator, expansion tank, P/T ports, return valves, supply valves and control panels mounted thereon. The module is assembled at the factory and is tested at the factory to ensure that the components are properly plumbed and wired. Once the module is delivered to the job site, the components of the module are quickly and easily connected to the hydronic radiant floor heating system.

Abstract: A method of heat exchange comprises advancing energy-carrying medium in a channel system comprising channel-part lengths (1) which extend in side-by-side mutually parallel relationship, such as hose parts (1), and substantially sheet-like or slab-like base parts (2) which support the channel parts. The method is mainly characterized by supporting and holding channel parts (1) with the aid of at least one pre-fabricated sheet or slab (2) of heat-insulating material, such as so-called cellular plastic material, and by inserting the channel parts (1) into locking grooves (3, 4) included in the slab or sheet, the width of locking grooves, when appropriate, being preferably slightly smaller than the width of a channel part, in appropriate cases the diameter of the channel part. The invention also relates to an arrangement for carrying out the method.

Abstract: A hydronic heating system that has a boiler supplying hot supply water, a reservoir of cooler return water, a supply water line, a return water line and one or more heating loops through which water flows from the supply line to the return line, the heating loop including a heating element that is a length of tubing that conducts water from the supply to the return and is mounted in a wall or a floor of an area heated by said system by RFH or RWH has: a thermally conductive plate mounted in the area floor or wall, adjacent a surface thereof and board-like members for holding the plate and the length of tubing in intimate thermal contact with the plate, so that the plate is heated by conduction of heat from the tubing and the plate has a radiating surface that radiates heat to the area.

Abstract: A radiant heating system for a greenhouse utilizing radiator tubing formed from substantially gas impermeable plastic material. The system includes a radiator tube disposed overhead and formed from light transmitting material so that sunlight projecting into the greenhouse will be substantially transmitted to the plants grown thereunder and a second radiator tube disposed proximate the greenhouse floor and formed of similar plastic material. The radiated tubes are interconnected at one of their ends and a burner communicates through a manifold connected to the other ends of the radiator tubes to transmit a heated effluent through the tubes. Valve means and exhaust means are associated with the manifold.

Abstract: A radiant heating system for a greenhouse utilizing radiator tubing formed from substantially gas impermeable plastic material. The system includes a radiator tube disposed overhead and formed from light transmitting material so that sunlight projecting into the greenhouse will be substantially transmitted to the plants grown thereunder and a second radiator tube disposed proximate the greenhouse floor and formed of similar plastic material. The radiated tubes are interconnected at one of their ends and a burner communicates through a manifold connected to the other ends of the radiator tubes to transmit a heated effluent through the tubes. Valve means and exhaust means are associated with the manifold.

Abstract: A modular temperature controlling panel for location adjacent a rear side of a room surface and between spaced penetrable structural framing members for supporting the room surface includes: an insulating core having a contact surface for location adjacent the room surface and a non-contact surface opposite the room surface; a linear thermal source recessed within the core on the contact surface; a metallic sheet on the contact surface of the core for contacting the linear thermal source; and a spring retention device on the non-contact surface of the core for securing the core between the spaced framing members and for urging the contact surface towards the room surface.

Abstract: A flooring structure comprising an exothermic body for heating purposes laid in a space provided under a floor, and a heat accumulating material having viscoelastic and/or elastic properties and capable of retaining water therein, which is filled into the space, and a method of constructing the floor structure are disclosed.

Abstract: This invention relates to a novel counter flow tube-manifold heat exchanger which can be installed in a wood or concrete floor and used to heat the floor and the earth space associated with the floor. A heat exchanger for conveying a heat containing fluid material in counter flow pattern comprising a hollow conduit comprised of three hollow elongated resillient fluid conducting tubes which are disposed parallel to and are joined to one another; and a first hollow elongated manifold with ports therein; and a second hollow elongated manifold, with ports therein adapted for connection with the ends of the tubes, the first ends of two of the three tubes being connected to the ports of the first manifold and the opposite ends of the same two tubes being connected to ports of the second manifolds, and the first end of the third tube adjacent the first ends of the two tubes being connected to a port of the second manifold, while the opposite end of the third tube is connected to a port of the first manifold.

Abstract: A refrigeration cycle constitutes a closed cycle for circulating a refrigerant therein and includes at least a variable capacity compressor, an outdoor heat exchanger, an expansion valve, and an indoor heat exchanger. The indoor heat exchanger is provided with temperature sensor and an indoor fan. A floor heating panel is connected in parallel with the indoor heat exchanger. The panel is provided with a floor temperature sensor. A flow control valve is arranged in a refrigerant upstream side of the panel at a heating operation. A controller controls the compressor, the fan, and the valve in a first state at the start of a heating operation to simultaneously start air heating by the indoor heat exchanger and floor heating by the panel. The compressor, the fan, and the valve are controlled in a second state when a detection output from the room temperature sensor reaches a preset value, thereby maintaining a room temperature and increasing a floor temperature.

Abstract: A plate-shaped heating element, in particular for floor heating, consists of two plates of synthetic material defining a hollow space. Spacing elements are provided between the plates in a direction perpendicular to the plane of the plates, the spacing elements uniting the two plates. The spacing elements are arranged so as to form a first row along a first straight line, said first straight line being an extension of the axis of the joining element. All other spacing elements form further rows, said rows being provided along straight lines which again are provided parallel to the first straight line.

Abstract: The present invention provides, as one embodiment thereof, a hot water heat panel which includes a wooden board; a wooden frame fixed onto the wooden board; a grid-like support unit having a number of compartments standing normal to the surface of the wooden board within the wooden frame; a plurality of parallel grooves extending from one of the side edges of the wooden frame to another opposing thereto, so as to pass through the surface of the support unit and the surface of the wooden frame continuous therewith, the grooves being suitable for receiving a hot water pipe; an undulated metallic plate fixed to the wooden frame so as to continuously cover the surface of the wooden frame, the surfaces of the grooves and the surface of the gridlike support unit.

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: A flexible hosing for circulation of a heat transfer fluid to effect heat exchange within a concrete or other type of slab. An inner wall comprising nylon, rayon or other similar material forms an inner wall of the hosing to resist corrosive attack by the heat transfer fluid. A locator wire is embedded within the hosing for transmission of a locating signal so that the position of the hosing within the slab may be accurately determined. The wire may also serve as an electrical resistance heating element should the heat transfer fluid become frozen, or should it be desired that the heat exchange system be operated without an external boiler or other heat source.

Abstract: System for tempering spaces of a building with ceiling or wall constructions of metal or nonmetallic parts which are fastened to the supporting or nonsupporting wall or ceiling of spaces, in which by a heat transport medium conducted through the ceiling or wall construction the parts of the construction facing the interior space of the building are tempered. On at least one pipeline (1) conducting the heat transport medium there are arranged several heat transfer profiles (2), heating conducting, preferably with clamping effect, metallically conducting or in one piece, the effective radiation and convection surface of which is greater than the wall or ceiling surface covered by the system.

Abstract: An underfloor heating system includes structure defining vertically adjacent upper and lower communicating cavities beneath the floor of a room to be heated. A noncombustible heat source is provided in the lower cavity. Barriers are arranged in both cavities to define communicating compartments therein. The heat source includes an arrangement for directing hot air produced thereby through the compartments in the lower cavity. The cavities communicate such that hot air passes first through the lower cavity compartments, then through the upper cavity compartments, and back to the heat source.

Abstract: A radiant heating system especially useful for floor heating is provided with a fluid flow apparatus that includes means for pumping a fluid such as water, a temperature-responsive actuator and a valve positionable within a valve housing in response to measured fluid temperature. The system includes heat transfer means, typically a tube embedded in the floor that receives heated fluid from the flow apparatus which in turn receives fluid at generally a higher temperature from a fluid heating apparatus such as a water boiler. The amount of heated fluid recirculated to the heat transfer means is controlled by the position of the valve in the valve housing.

Abstract: A heating system for heating the floor of a room. The heating system includes an airtight sealed chamber directly beneath the floor which is to be heated. The top wall of the chamber is a concrete panel which also forms the floor which is to be heated. An electric heater or other type of incombustible heater source is provided in the chamber for heating the air therewithin. A heat diffusion plate is provided immediately above the heater to assist in the application of heat to the concrete panel.

Abstract: A piping apparatus for melting snow and ice, wherein a large number of heat radiation pipes are arranged below or above a surface from which snow or ice is to be melted and removed. One of the ends of each of the heat radiation pipes is communicated with an inlet side header arranged in a direction substantially orthogonal to the heat radiation pipes, and the other end of the pipes being communicated with an outlet side header arranged in a direction substantially orthogonal to the heat radiation pipes, thereby constituting a piping arrangement unit. The inlet side is communicated with a feed supply of a heating medium such as hot water so as to pass the supplied heating medium such as hot water through the heat radiation pipes. Heat retaining members having therein a heat accumulation material are disposed between the heat radiation pipes, whenever necessary.

Abstract: A method and arrangement for controlling conditions of a dwelling-house is provided. The arrangement concerns the utilization of an insulated bottom slab having heat-circulating means therein. The insulation is arranged such that upon heating, moisture is driven outwardly from the bottom slab and toward the cool, underlying ground. Moisture is generally inhibited from being driven upwardly into the dwelling-house basement area. Insulation means along an outer edge of the bottom slab prevents moisture from seeping back into the bottom slab.

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 heating system for warming the space within a greenhouse or similar structure. The heating system comprises a heater means having a heating chamber for air, mounted in a plenum chamber. The plenum chamber is located below the base of the structure and is in fluid communication with the space to be heated. Means are provided to draw air from the plenum chamber into the heating chamber. Air heated in the heating chamber is passed through conduit means to the space. The heating system according to the present invention provides efficient space utilization and improved air circulation over conventional heating systems for greenhouse structures.

Abstract: This is a system for the air conditioning of rooms in building, which rooms are defined by concrete floor structures with hollow ducts connected in series in parallel with each other and in groups, in order to bring about effective heat exchange between concrete and supply air flowing through each duct group before being fed to the room via a supply air device. The supply air to each duct group is taken via a pipe connection from a main duct for supply air and is evacuated from the room in another way. In order to control the heat absorbtion (heat inertia) of the duct group according to the actual demand for each room so that the air-flows in each of the two connections of the duct group are balanced corresponding to the actual cold/heat demand. Each or some certain duct groups in the room includes a branching device (16) which is located between the main duct (5), or a branch thereof, and a second connecting place (11) to the duct group.

Abstract: A heating soft floor mat is described comprising a base sheet composed of a thermoplastic resin foamed article as a heat insulating layer having meanderingly formed thereon grooves for conduits, conduits for heating medium disposed in the grooves, and cover material having flexibility covering the surface side thereof, wherein the thermoplastic resin foamed article is a crosslinked polyethylene foamed article containing closed cells having a degree of expansion of from 10 to 40 and the conduits are composed of low density crosslinked polyethylene having a density of less than 0.910 g/cm.sup.3.

Abstract: A process is described for the installation of a floor heating system through which a heating medium flows and which comprises a plurality of plastic pipes (7) forming mats. The plastic pipes are embedded in a predetermined height in a plaster layer (9). The mats are initially placed on a substrate, preferably a thermal insulating layer and connected to the heating system. A given pressure is then produced in the plaster pipes. A first plastic layer is then applied to the mats and has a consistency such that the plastic pipes float on the plaster layer after a certain time and partly project therefrom. After the first plaster layer has set to such an extent that the plastic pipes are fixed in position, a second plaster layer with a thickness of approximately 10 to 15 mm is applied to the first plaster layer. The plastic pipes are fixed in position by the first plaster layer, so that they cannot float in the second plaster layer.