Abstract: A method and apparatus for the transfer of heat at a lower temperature to another fluid at a higher temperature, using a rotary heat exchanger and circulating the two fluids through said heat exchanger wherein a third fluid is circulated. The third fluid is normally a gas, compressed within the rotor by centrifugal action, with accompanying temperature increase, and heat is removed from said third fluid to a second fluid during and after compression; heat is added to said third fluid from a first fluid during and after expansion. A fourth fluid may be also circulated within said rotor, for removing heat from said third fluid before and during early part of compression to increase the weight of said third fluid within the compression side of the said rotor, thus improving the circulation of said third fluid within said rotor. Said second fluid, said first fluid, and said fourth fluid may be either liquids or gases as desired, including water. Said third fluid may be carbon dioxide.

Abstract: A combined heating and cooling system for a building is described. The system includes a heating circuit and a cooling circuit. The circuits are coupled to heat energy storage reservoirs. Each reservoir defines an elongate flow path along which water can flow in the form of a column. Using heat from the heating circuit, one or more of the reservoirs can be charged with hot water which is stored in the reservoir(s). The stored hot water is subsequently used to boost the temperature in the heating circuit. Similarly, water cooled by the cooling circuit can be stored in other reservoir(s) for subsequent use in boosting the cooling action of the cooling circuit. A heating system or a cooling system may also be provided.

Abstract: A heat-conducting joint suitable for solar heat collectors. A tubular metal member carries heat-transfer fluid. A sheet metal member is in thermal contact with said tubular member and one of the members is pre-curved in a plane perpendicular to the surface of the sheet into a wave shape substantially consisting of a plurality of long radius arches joined by short radius cusps. Means are provided for first securing the other member while straight to the one member near its ends in a manner to prevent sliding of the other member on the one member. Means are provided for then securing said other member against the one member at the short radius cusps, whereby the two members are pressed together elastically along at least one line of contact for efficient heat conduction between them.

Abstract: A heat transfer surface for use in a flooded evaporator. In a preferred embodiment, a fibrous material is wrapped on the surface of a tubular heat exchange member so that the strands of material lie in spaced relation so as not to blanket the entire surface but rather to provide a good distribution of nucleation sites over the tube surface.

Abstract: A method and a plug to seal a defective tube of a heat exchanger in the place, where said tube extends in a tube plate, said plug being inserted in the tube plate and having two coaxial cavities, each of which is open at one end and contains an explosive charge and firing means, and said plug being jammed in the tube plate in a gas and liquid tight manner by its radial expansion due to the explosion of its charges -- and a heat exchanger, of which at least one of its tubes has been plugged by means of the described plugs.

Abstract: An integrated system for engine heat extraction and comfort air conditioning in an automotive vehicle powered by a Stirling engine, the system being used (a) as a part of the heat rejecting means for the Stirling engine located in a compartment outside of the passenger compartment, and (b) for conditioning air within the passenger compartment. The heat rejecting means of the Stirling engine is effective to cool a selected zone of an enclosed working fluid circuit of the engine; the heat rejecting means is divided into two portions, one normally being diposed to reject heat to ambient air conditions and another disposed to selectively impart rejected heat either to air flow for conditioning air for said passenger compartment or to air flow to be aborted to ambient air conditions.

Abstract: A compact indoor environmental control system which has cooling, heating, and ventilation components mounted and positioned to provide a slim design for in-the-wall installation. A cabinet is provided with cooling and heating components mounted to leave plenums at opposite ends of the cabinet so that air outlets can be selected on any one of five sides of the plenums. The heating, cooling and control sections are of modular design to permit full accessibility for maintenance, repair or replacement. A variety of configurations for intake and exhaust of inside and outside air are possible because of the versatility provided by the modular construction.

Abstract: In a tube-type heat exchanger which produces superheated steam directly while being of the once-through type, the tubes permit recycling of the vapor of the secondary fluid which is circulated within them. A coaxial sleeve mounted within the annular space between an intermediate tube and the pressure tube delimits an annular zone filled with heat-insulating stagnant vapor so as to isolate the vapor produced from the fluid in liquid phase.

Abstract: A tubular exchanger for operations under conditions of heat and pressure comprising a set of tubes made of ferritic steel having the following composition:C .ltoreq. 0.010%,Cr 25 to 30%,Mo < 4%.The tubes are provided at each end with relatively short ferrules of austenitic stainless steel which are welded to the tubes.

Abstract: A combined heating and cooling system for a building is described. The system includes a heating circuit and a cooling circuit. The circuits are coupled to heat energy storage reservoirs. Each reservoir defines an elongate flow path along which water can flow in the form of a column. Using heat from the heating circuit, one or more of the reservoirs can be charged with hot water which is stored in the reservoir(s). The stored hot water is subsequently used to boost the temperature in the heating circuit. Similarly, water cooled by the cooling circuit can be stored in other reservoir(s) for subsequent use in boosting the cooling action of the cooling circuit. A heating system or a cooling system may also be provided.

Abstract: An air conditioning system comprising a heat exchanger using the conduction principle to impart a portion of the heating or cooling from the air exhausted from a building or facility to a make-up air supply and a heat pump which provides supplemental heating or cooling for the make-up air supply to bring it to the desired temperature for use in the building or facility.

Abstract: A sealing member for a rotary heat-accumulator type heat exchanger for a gas turbine engine, in which a hollow cover having a plurality of holes is provided between a sliding plate and a shield panel of a heat accumulator. Low-temperature, high pressure air is forced to flow through the holes of the cover into high-temperature air side of the heat accumulator, whereby portions of the sealing member are effectively cooled.

Abstract: In a heater head for a hot gas engine the connection between the regenerator tops and the cylinder tops consists of pipes of equal shape and dimensions. The pipes are shaped partly as involutes on a cone partly as straight tubes on a cylinder surface to ensure uniform gaps between them.

Abstract: There is described an improved matrix structure for use in a heat regenerator for a turbine engine. The improvement comprises providing the structure's outer region with a plurality of corrugated and flat ceramic strips, a substantial portion of said strips of a thickness greater than the thickness of the structure's operative region. A method for making the structure is also disclosed.

Abstract: A seal assembly for providing seal between an end face of a cylindrical and rotatable heat-transferring member and an opposite surface of a stationary member of the heat exchanger, having a loop-shaped and cross-sectionally rectangular seal member of a heat-resistant and rigid material, a loop-shaped groove formed in the surface of the stationary member to loosely receive the seal member, a loop-shaped back-up member of a resilient material tightly received in the bottom of the groove such that the seal member is sandwiched with a compressive force between the back-up member and the end face of the heat-transferring member, and a loop-shaped auxiliary seal member of a resilient material arranged to provide seal between the outer surface of the seal member and the outer wall of the groove and press the seal member against the inner wall of the groove.

Abstract: A heat exchanger core assembly suitable for use in a motor vehicle and the like cooling system. The assembly has a multiplicity of parallel heat transfer fins pierced by a large number of liquid-filled tubes to be cooled. The leading edges of the fins are overturned to provide venturi-shaped inlets for the cooling air effective to increase the air flow velocity over the fins. These overturned edges have an outer broad surface lying in a plane normal to the air passages which surface is readily cleared of insects unable to enter the venturi throat.

Abstract: A vehicle engine radiator assembly has a radiator having first and second opposed surfaces, an inlet conduit, and an outlet conduit. A fluid coupling is connected to each conduit and is of a construction sufficient for pivotal movement of the radiator for controllably directing either the first or second surface outwardly from the vehicle. Means is provided for permitting pivotal movement of the radiator and maintaining the radiator fixed to the vehicle at a preselected position. The radiator is pivoted for changing the direction of air flow therethrough for removing dirt and other materials from the radiator.

Abstract: A heat exchanger having a desired system of tubular passageways for a heat exchange medium defining opposed headers connected by connecting portions of said passageways extending therebetween, said passageways having entry and exit portions extending from said headers to provide ingress and egress openings for said heat exchange medium, wherein said headers include a fluid distributing pattern comprising at least one bonded portion defining at least one wedge-shaped projection, said projection provided to assist in the distribution of flow of said heat exchange medium.

Abstract: An air flow control mechanism for use in a radiator system of the type having a radiator core constructed from a plurality of parallel core sections which are equally spaced apart and aligned in a single row with the opposing faces of adjacent core sections being open to provide air flow passageways through each core sections at right angles to the cooling air directed at the front of the radiator core. The radiator air flow control mechanism comprises gate means operatively connected in each of the spaces between adjacent core sections to pivot between a first and second position, where the gate means in the first position directs the cooling air through each of the core sections' air flow passageways in one direction and where the gate means in the second position reverses the direction of flow through each of these passageways. A drive means is provided for reciprocally moving the gate means between the first and second positions.

Abstract: A heat exchanger or regenerator system useable in an air separation plant to minimize infiltration of air into the low pressure nitrogen stream comprising a heat exchanger (regenerator) having at least one flow path for the reversing heat exchange fluids, which flow path has at each end, an inlet branch and an outlet branch, wherein each branch has two series connected valves with a vent pipe between each pair of valves. Fluid flow through the vent pipe is controlled, e.g. by remotely actuable switch valves.