摘要:
Provided is a method for charging a powdery heat insulator into a thermally insulated, double-shelled tank between its inner vessel and outer vessel. The method comprises causing a powdery heat insulator to flow together with water into a space between the inner vessel and outer vessel of a thermally insulated, double-shelled tank, discharging the water in said space, and then drying the powdery heat insulator. The pressure in the space is then also reduced. The drying of the powdery heat insulator can be carried out by heating either the inner vessel or outer vessel, or both of these vessels, or by inert gas flow, such as nitrogen gas.
摘要:
A flexible evacuated insulating panel comprises a first flexible external sheet (10) opposing a second flexible external sheet (20), each sheet comprises a plurality of corrugated gas impermeable layers (11) and (21) joined with a gas tight seal (18) to form an internal space that is evacuated of air (19). Spacers (12 and 22) press against a membrane (28) to resist the facewise compressive forces. The evacuated insulating panel is flexible, both in use and in application. As such, the panel may be manually applied to curved surfaces for any high-performance insulator application. The flexible evacuated insulating panel is mass-producible and useful in many different applications without custom design or manufacturing.
摘要:
A thermal insulation system 1, especially for low-temperature containers, formed of at least two multilayer mats 4 and 5, which are made from fiber mats 8 and are separated by a gas-tight film 6. The inner multilayer mat 4 arranged directly on the container wall 2 is filled with a gas, which cannot condense during operation and whose pressure can be adjusted to the actual ambient pressure. The outer multilayer mat 5 is filled with the ambient gas, generally air or nitrogen, and the pressure is adjusted to the ambient pressure. The multilayer mats 4 and 5 may be further subdivided by reflecting films 7 that are permeable to gas.
摘要:
The invention consists in a double storage tank with an upper storage tank disposed above a lower storage tank, the storage tanks being separated by a thermally insulative wall, in which said thermally insulative wall is a double-skin wall comprising a rigid bulkhead towards the upper storage tank and a skin towards the bottom storage tank which is permeable to gases but impermeable to the liquid in the bottom storage tank, said rigid bulkhead and said skin being held apart.
摘要:
Cryogenic vessels provided with improved thermal insulation by spirally generating two layers of thermal insulation thereon; permits thicker insulation without requirement of increased space and heavier equipment.
摘要:
An adsorption agent is introduced in the insulation chamber of a vacuum insulated double walled vessel for the storage of low-boiling liquefied gases. Specifically the adsorption agent is installed in the chamber before producing the vacuum by housing the agent within a gas and water tight container which bursts in a vacuum.
摘要:
A high thermal capacitance multilayer thermal insulation structure is described, which is of particular utility for thermal protection against exposure to alternate high and low radiant heat flux levels, and which comprises a laminate of alternate metal foil or metallized plastic foil layers and layers of material which are characterized by phase change upon the absorption of heat, the foil layers providing high reflectance and reradiation of the heat flux, and the phase change layers providing for absorption and storage of heat during periods of high heat flux for reradiation during periods of low heat flux.
摘要:
A method of manufacturing curved wall portions of a heat insulating wall for a container having a curved surface, includes the steps of forming a block of heat insulating synthetic foam material with a contour embracing a section of a container surface to be insulated, cutting the block of synthetic foam material over the contour so as to form a curved blank, coating the curved blank with a baffle layer of the same contour, and finally cutting the coated blank along joining surfaces so as to produce a wall portion with final dimensions. An arrangement for manufacturing the wall portions includes a first unit provided with a cutting tool rotatable about a flexible web for cutting a block of heat insulating synthetic foam material over a contour embracing a section of a container surface to be insulated so as to form a curved blank, and a second unit including two pairs of band saws for finally cutting the curved blank coated with a baffle layer along joining surfaces so as to produce a wall portion with final dimensions.
摘要:
A flexible, e.g. polyurethane, open cell foam sheet is impregnated with a controlled amount of a liquid polymerizable resin system which cures at ambient temperature, and the resin impregnated sheet is immediately chilled at a suitably reduced temperature, e.g. 40.degree. F. or below, to arrest polymerization or hardening. The resulting resin impregnated sheet is stored at such reduced temperature. When needed for adhesive bonding the chilled resin impregnated sheet, cut to the desired pattern or size, is applied between the surfaces of objects to be bonded, e.g. fiber reinforced polyurethane insulation blocks and plywood strips, or such insulation blocks and the steel hull of a liquid natural gas (LNG) container or marine tanker. With or without the application of bonding pressure, as the temperature of the resin impregnated sheet rises to ambient temperature, curing of the resin in the sheet to the solid state takes place, and bonding of the adjacent surfaces of the objects occurs, substantially without extrusion of any excess resin from the sheet, the open cell foam sheet containing the cured resin forming an integral part of the resulting bondline.
摘要:
Composite panels each having a casing and insulating material in the casing are mounted in a covering layer over the inside of a supporting structure by mechanical fastening means. Joint cover members including insulating material and outer facing material are disposed in the spaces between casings of adjacent composite panels. The outer facing material is sealed to front panel portions of the casings to form a primary barrier for cryogenic liquids therewith. An additional secondary barrier may be provided by using composite panels with interior panels in the casings sealed to inner sides thereof and dividing the casings into front and rear compartments, each having insulation therein, and using front and rear joint cover members, the outer facing material of the rear joint cover members being sealed to outer sides of the casings of adjacent composite panels to form a secondary barrier with the interior panels of the composite panels.