Abstract:
An apparatus for supporting at least one inner cryogenic fluid containment system within an outer isolating enclosure to retard heat transfer into the inner containment system comprising a plurality of supports serially interconnected and laterally spaced by lateral connections to extend the heat conduction path into the inner containment system.
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:
A pumping system for filling pressurized gas cylinders from a relatively lower pressure, liquified supply of that gas, for example CO.sub.2, by means of a system comprising a CO.sub.2 /air-driven motor driving the liquified gas into the cylinder. The system is primed until liquid begins to run. Thereafter the liquid is driven by the CO.sub.2 /air-driven motor into an empty cylinder. A particularly efficacious longitudinally reciprocating plunger pump for use in the system is disclosed (FIG. 4). The "air" driven motor is preferrably driven by CO.sub.2 vapor, particularly where CO.sub.2 is the liquified gas being pumped or where hazardous or toxic liquified gases are being pumped.
Abstract:
This invention relates to the reheating of a cold cryogenic fluid by heat exchange with a warm liquid, commonly water. The cold cryogenic fluid first flows into a descending tube and then into a rising tube whereas the water trickles along the tubes and from an upper supply, as far as a base manifold. The invention is particularly applicable to the reheating and revaporization of liquified natural gas.
Abstract:
Large amounts of low boiling liquefied gases are evaporated by heat transfer in a cylindrical combustion chamber without a convection component and a passage for the gas to be evaporated surrounds the combustion chamber so that the liquefied gas is exposed to a burner flame upon entry into the passage.
Abstract:
A finned assembly for a heat exchanger comprising an extended surface portion, an elongated tubular member, said extended surface portion comprising two identical parts, each having an internal cylindrical surface adapted to engage said tubular member and each having radially extending locking members adapted to engage locking members on the other of said parts. The disclosure further relates to methods and apparatus for attaching said extended surface portion to said member.
Abstract:
A plurality of straight tubes in side by side relationship are surrounded by a single long tube of substantially lesser diameter helically wound about the straight tubes to define a reservoir for pressurized natural gas. The helically wound single long tube serves both as a protective covering and strengthening structure for the straight tubes. The straight tubes and helically wound tube may be interconnected by suitable manifolding and a fill opening provided for storing pressurized fluid. The tubular configuration is that of a fairly flat parallele-piped corresponding in size to a conventional standard automobile gasoline tank and thus well suited to replace the conventional gasoline tank to drive vehicles by natural gas.
Abstract:
929,609. Soil stabilisation. CONCH INTERNATIONAL METHANE Ltd. Feb. 12, 1962, No. 5325/62. Class 68 (1). [Also in Group XXVIII] Freezing of the water-bearing earth surrounding a plurality of shafts 2 intended for stoning liquefied gases (see Group XXVIII) is effected by filling the shafts with water or drilling mud, introducing double pipes, and passing refrigerant therethrough until a sufficient layer of frozen earth is obtained and finally passing steam through the double pipes to thaw any ice formed in the liquid with which the shafts are filled. In a modification the shafts are filled with refrigerant which is afterwards withdrawn. Each shaft is lined with concrete, aluminium or steel. Specification 894,762 is referred to.
Abstract:
A gases delivery system for medical use is disclosed that has a container configured to house a metal-organic framework material within at least one section of the container. An activation mechanism may be associated with the container. The metal-organic framework material may contain one or more substances such that the one or more substances may be released from the metal-organic framework material when energy is applied to the container via the activation mechanism. The activation mechanism may be a heating mechanism. One or more containers housing metal-organic framework materials may be used in a gases recirculation system.