Abstract:
A shaped article is capable of at least one of containing and delivering a cryogenic fluid. The article has a porous structure that restricts the passage of cryogenic fluid in the liquid phase while permitting the passage of cryogenic fluid in the gaseous phase. The article may be in the form of a tube or container. The article permits a liquid cryogen to be transported to a specific site, and then cool the site by means of conduction from the cold article and convection of cold gas, the phase change of the evaporating liquid greatly enhancing the heat loss.
Abstract:
A lower header 10 into which low temperature liquid is flowed and an upper header 16 are connected with each other via a plurality of outer heat exchange tubes 22. A plurality of inner heat exchange tube 24 are respectively provided in the corresponding outer heat exchange tubes 22 at a region of an inflow end portion of each outer heat exchange tube 22. An annular passage 23 is defined between an inside surface of each outer heat exchange tube 22 and an outside surface of each inner heat exchange tube 24 for flowing low temperature liquid. Each annular passage 23 is communicated with the lower header 10.
Abstract:
A ceramic composite is provided comprising ceramic fibers and microparticles bound together as a porous matrix with a ceramic binder. The ceramic composite is particularly useful for transporting cryogenic fluids.
Abstract:
A compressed natural gas refueling station tank comprises an elongated tubular body having a diameter of about 8 to 10 inches and a length of 50 feet or more. The tank is bent into a serpentine shape to produce a compact configuration which can be stacked with other like tanks and connected to a compressor through a manifold.
Abstract:
A container is formed of a flexible length of hose, at least a substantial portion of which is of one continuous piece, having alternating expanded-diameter and narrow-diameter storage and connection sections, respectively. The hose includes a liner, a flexible fiber covering the liner, and a flexible protective covering over the fiber. The hose has a pressure gauge at one end and a pressure valve, demand flow regulator and mouthpiece at the other end.
Abstract:
A pneumatic power supply for use in powering servo controls and actuators s a filament wound composite and aluminum ultra-high pressure vessel containing helium within which there is mounted an internal pyrotechnic heat generating element to provide thermal energy to the system. The heater compensates for adiabatic cooling of the gas inventory during blow down, i.e., during delivery of high pressure gas to power pneumatic servo controls and actuators in missiles. At the beginning of the blowdown, the heater element burns at a predetermined rate which adds heat to the compressed gas so that the gas temperature remains relatively constant, effectively increasing run time. The pressurized gas is delivered by means of a pressure regulator from the pressure vessel to the delivery system for use in the pneumatic control system.
Abstract:
A liquid holding tank incorporates a liquid-containing portion surrounded by thermal insulating material within a casing. The liquid-containing portion comprises an elongated horizontal chamber and at least one tubular shaft extending upwardly from the chamber. The elongated chamber may be segment-shaped in cross-section, the top being flat.
Abstract:
Cryogenic liquid for cooling the rotor of a superconducting generator enters the rotor along the inner surface of a centrally-disposed rotating conduit extending into the rotor. From the resulting annulus of liquid coolant surrounding a vapor core, liquid coolant flows via a pair of liquid-delivery ducts to the surface of the pool of coolant bathing the rotor windings. Each delivery duct comprises a radially-extending receiving tube and a radially-extending delivery tube interconnected by an over-flow trap. The outer end of the delivery tube is in flow communication with the vapor in the central core of the rotor winding chamber and the inner end of the receiving tube is in flow communication with both the liquid coolant and the vapor core in the rotating conduit.
Abstract:
A method and apparatus for detecting leaks or failures in the insulation of a cold storage container wherein electrically nonconducting conduits are placed in cold transfer relationship with the insulation. The conduits are filled with an ion-conducting material that solidifies when subjected to the temperatures produced by a leak in the insulation and changes conductivity when it solidifies. The conductivity of the material filling the conduits is monitored to detect leaks in the insulation.
Abstract:
An electrical connector suitable for cryogenic applications of virtually all metal construction employing anodized aluminum rings to provide electrical isolation.