Abstract: This invention provides a method and apparatus for transferring heat to a cooler gas from a hotter gas which contains tri-atomic molecules with good infra-red energy absorption characteristics, for example CO.sub.2. The hotter gas is passed in a first direction along a conduit, and simultaneously the cooler gas is jetted through and across the hotter gas in a direction transverse to the hotter gas direction. This allows the tri-atomic molecules minimally entrained in the cooler gas jets to provide heat to the cooler gas firstly through transferring their initial kinetic energy to the cooler gas molecules by way of collision, and secondly by absorbing infra-red energy radiated from the hotter gas and passing this absorbed energy to the cooler gas molecules also through collision.

Abstract: In a heat exchanger for condensing a gas by passage through vertically spaced heat exchange tubes, flooding of the lower tubes is prevented. A return flow header includes nested baffles which define isolated flow channels connecting one or more predetermined upper heat exchange tubes with a single predetermined lower heat exchange tube. This prevents the condensed liquid in the header from completely filling the lowermost tube or tubes. Removable plugs or plates permit access to the inside of the heat exchange tubes for cleaning.

Abstract: Ventilating and cooling arrangement for an engine compartment of a liquid-cooled internal combustion engine of the type having a radiator for recooling the engine coolant by means of ambient air. A ring radiator is provided which is housed in an air conducting housing which is separate from the engine compartment. The air conducting housing is configured to form two radiator exhaust air chambers at respective different peripheral circumferential positions along the radiator. A first of the exhaust air chambers communicates a portion of the exhaust air from the radiator directly to the engine compartment as engine compartment cooling and ventilation air. The other of the exhaust air chambers communicates the remaining portion of the exhaust air directly from the radiator to the surrounding atmosphere in bypassing relationship to the engine compartment.

Abstract: A device for sealingly connecting the end of a glass tube to the edge of a hole in a rigid plate including a resilient ring with a axial half-section in the shape of a flattened Z, said ring being made up of two cylindrical sleeves which partly enclose one another and are axially offset in relation to one another.

Abstract: A heat exchange panel possessing a system of internal tubular passageways connecting opposed headers, said headers defining an angle of at least 91.degree. with respect to the direction of flow of heat exchange medium passing therethrough, wherein said headers are triangular in shape and wherein fluid entry and exit portions extending from said headers are provided with their longitudinal dimensions lying in substantially the same plane as one of the sides defining the outer boundaries of said headers. Said headers are further provided with a plurality of bonded portions placed in alignment so as to define discrete, parallel-directed fluid channels assisting in the distribution of heat exchange fluid. The configuration of the headers provides improved and efficient drainage of fluid from the panel.

Abstract: A low cost, preformed, synthetic resin, indirect air cooled atmospheric heat exchanger especially adapted for use in water cooling towers is provided which exhibits enhanced water cooling properties notwithstanding fabrication thereof from relatively inexpensive, corrosion-free polyvinyl chloride or like materials heretofore thought to have insufficient heat conductivity for practical use in heat exchangers.

Abstract: Headering arrangement for heat exchanger including an array of flattened tube-like heat exchange channel elements wherein comb-shaped members extend into the end sections of the channel element array from opposite sides such that the corresponding teeth of the respective combs sealingly overlap one another and serve as spacers between adjacent channel elements. A header tank is leak-tightly secured to the periphery of the comb members, for introduction of fluid to or withdrawal of fluid from the stacked array.

Abstract: A heat exchange vessel has a plurality of tubes disposed therein. A tube sheet section in the vessel has a plurality of ports formed therein for receiving one end of each of said tubes, and at least one channel is formed in said first tube sheet section for communicating with said ports. An additional tube sheet section disposed in said vessel has a plurality of ports formed therein for receiving the other ends of said tubes and at least one channel formed in said additional tube sheet section is provided for communicating with said latter ports. Means is provided for introducing a heat exchange fluid to the channel associated with one of said tube sheet sections for passing through its respective ports through said tubes. Likewise means is provided for collecting the fluid from the channel associated with the other tube sheet section for passing the fluid externally of the vessel.

Abstract: A heat retriever having a shell provided with an inlet and an outlet for permitting a fluid to be circulated through the shell and heated by a retriever assembly including a vent pipe attachable to a flue pipe of a furnace. At least one, and preferably a plurality of retriever pipes are connected in parallel to the vent pipe within the shell for forming a bypass around a portion of the vent pipe of exhaust gas from the associated furnace flue pipe and exposing the fluid to be heated to a larger heat transfer surface. A blower is advantageously mounted on the inlet of the shell in order to provide a flow of forced air over the retriever pipes.

Abstract: A tubular heat-exchange unit and method for its manufacture comprising a plurality of heat-exchange tubes disposed in the vertical and horizontal direction in a stacked, spaced-apart relationship, the end portions of said tubes being adheringly embedded at both ends thereof in a wall of a hardened, elastic material, said wall at both ends of said tubes separating an inner zone defined by the space around said tubes from the end zones which communicate with the space within said tubes.

Abstract: A tubular coiled heat exchanger adapted for cooling or heating of various fluids in various fields of industry. The heat exchanger comprises a shell and a core around which tubes having essentially the same length are wound at least in two layers. The tubes may have grooves projecting into the tubes to intensify heat abstraction within the tubes. A member of a streamlined cross-section, such as, a wire, adapted for forming fins is wound around the tubes with a pitch of at least twice the diameter of the wire. The tubes are wound around the core so that the tops of the fins of each tube coil come alternately in contact with those of the fins and with tube surfaces of adjacent coils. The above embodiment of the heat exchanger makes it possible to vary the number of turns of the tubes when winding the tubes being set once without any distance pieces between the layers. This ensures the manufacture of a highly compact heat exchanger featuring high thermal and hydrodynamic properties.

Abstract: A modular integrated cooling and heating system for effluents and other uses involving mixing tanks connected in series, hot water supply pipes connected to each of the mixing tanks in order to convey to each mixing tank a portion of the hot water effluent from a power plant. Cooling water pipes are connected to each of said mixing tanks in order to deliver cooling water from a river or other source to said mixing tanks whereby hot and cooling water mixes in said first tank with the water mixture being continuously passed into said second tank for mixing with additional cooling water from a cooling water pipe. The number of stages or mixing tanks will vary depending upon the cooling capacity desired.

Abstract: For reduction of high intensity sound produced through resonance by a radiator core when the rate of airflow therethrough, supplied by an engine-driven fan, exceeds a critical degree, a plurality of baffle plates are installed on the downstream or upstream side of the radiator core. The baffle plates are spaced from each other in a direction at right angles with the direction of the airflow through the radiator core, in such a manner as to inhibit the resonance of the radiator core when the rate of the airflow exceeds the critical degree.

Abstract: A method and apparatus are provided for increasing the heat transfer efficiency of a heat exchanger by utilizing a high intensity RF field. Either an ion stream generated by the RF field or the RF field itself results in the efficiency increase and the rate at which the fluid acquires energy from the heat exchanger is enhanced to the extent that the boundary layer normally present at the walls of the heat exchanger which impedes the transfer of heat from the heat exchanger to the fluid breaks down during this process. The RF technique is utilized in one unique application for increasing the efficiency of solar energy receiver which operate at temperatures exceeding 1,500.degree. F in that the system eliminates arcing which would occur due to the high temperatures involved, if electrostatic (D.C.) ion spray devices were used.

Abstract: A fluid-fluid heat exchanger comprises a plurality of flexible synthetic tubes extending in a curved path between a pair of headers with the tubes being maintained in a plurality of spaced apart superimposed layers by a plurality of spaced apart generally radially disposed spacers.

Abstract: A two-piece tube plug for repairing damaged tubes, of condensers, heat exchangers etc., in situ. The plug is made of a thimble having a shell with one end closed and an opposite open end. The thimble has a tapered axial bore in which a tapered cylindrical plug is inserted for expanding the shell of the thimble outwardly radially with the thimble in position on an end of a damaged tube at the tube sheet. The cylindrical plug deforms the shell outwardly radially when driven into the thimble shell to effect a closure on the tube and effect a fluid-tight seal between the thimble and the tube.

Abstract: A process for open-cycle air conditioning which affords economy of external power both with respect to cost and energy consumption by providing a low-temperature heater and a high-temperature heater for regenerating the sensible heat exchanger and desiccant when the apparatus is used for cooling and the enthalpy exchanger when the apparatus is used for heating. The power source for the low-temperature heater can utilize solar energy, waste boiler heat, waste process heat, nuclear reactor heat and the like. The power source for the high-temperature heater can be an open flame burner or other conventional heater.

Abstract: Copper backings brazed to ceramic parts exposed to high-temperature oxidizing high-velocity gases must be secured, for mounting purposes, to water-cooled fixed support, with high thermal conductance between backing and support. Prior art practice of brazing backing to support is inconvenient, making subsequent removal difficult, and disadvantageous in requiring that support be heated to brazing temperature (which may weaken support by annealing it). Invention teaches channel-shaped clip, on back of backing, whose legs are spread slightly to be inserted in mating slots in support face. All mating surfaces are tinned with lead-tin eutectic solder. If mere mechanical contact provides adequate thermal conductance between backing and support, solder remains unmelted; but if mechanical contact is imperfect temperature of backing will rise, and solder will melt and bridge gap between backing and support, raising thermal conductance.

Abstract: A heat exchange panel possessing a system of internal tubular passageways connecting opposed headers, wherein said headers define an angle of at least 91.degree. with respect to the direction of flow of a heat exchange medium passing therethrough, and said passageways are disposed at an angle of at least 1.degree. with respect to said flow, said flow defined with respect to a longitudinal edge of said panel. The disposition of the headers and passageways provides improved and efficient drainage of fluid from the panel regardless of whether the longitudinal dimension of the panel is placed in the horizontal or the vertical plane.

Abstract: A uni-directional valve arrangement placed in a predetermined location between a habitable enclosure and a heating or cooling system which is exposed to outdoor temperatures prevents air of undesirable temperature in the system from passing into the enclosure by gravity flow.