A cryogenic liquid tank (1) includes a reservoir (5) that includes a bottom portion (5a, 5a1, or 5a2) and a side wall (5b), a support portion (4) that supports the reservoir (5), and an intermediate member (10) that is provided between the reservoir (5) and the support portion (4). The support portion (4) includes an outer support portion (4b) which supports the side wall (5b), and an inner support portion (4a) which is disposed to be adjacent to an inner side of the outer support portion (4b), includes a heat insulating layer formed of an elastic material, and supports the bottom portion (5a, 5a1, or 5a2) of the reservoir (5). A cover portion (9a, 9a1, or 15) covering a boundary between the outer support portion (4b) and the inner support portion (4a) is provided between the support portion (4) and the intermediate member (10).

A compressed gas energy storage system may include an accumulator for containing a layer of compressed gas atop a layer of liquid. A gas conduit may have an upper end in communication with a gas compressor/expander subsystem and a lower end in communication with accumulator interior for conveying compressed gas into the compressed gas layer of the accumulator when in use. A shaft may have an interior for containing a quantity of a liquid and may be fluidly connectable to a liquid source/sink via a liquid supply conduit. A partition may cover may separate the accumulator interior from the shaft interior. An internal accumulator force may act on the inner surface of the partition and the liquid within the shaft may exert an external counter force on the outer surface of the partition, whereby a net force acting on the partition is less than the accumulator force.

A precast, prestressed concrete tank and method that facilitates construction of a primary inner tank within a secondary outer tank, and which permits for the construction of the primary inner tank after the secondary outer tank has been erected, but without requiring insertion through a top of the secondary outer tank, or by tunneling underneath the secondary outer tank, is disclosed. The primary inner tank has an inner wall and the secondary outer tank has an outer wall (precast, prestressed concrete) and wire windings. The primary inner tank is disposed inside of the secondary outer tank. The secondary outer tank has a plurality of first precast outer wall panels, and a temporary construction opening frame. The temporary construction opening frame defines an access doorway during construction of the tank. The temporary construction opening frame is disposed on a foundation base slab.

A precast, prestressed concrete tank and method that facilitates construction of a primary inner tank within a secondary outer tank, and which permits for the construction of the primary inner tank after the secondary outer tank has been erected, but without requiring insertion through a top of the secondary outer tank, or by tunneling underneath the secondary outer tank, is disclosed. The primary inner tank has an inner wall and the secondary outer tank has an outer wall (precast, prestressed concrete) and wire windings. The primary inner tank is disposed inside of the secondary outer tank. The secondary outer tank has a plurality of first precast outer wall panels, and a temporary construction opening frame. The temporary construction opening frame defines an access doorway during construction of the tank. The temporary construction opening frame is disposed on a foundation base slab.

The present invention includes: an independent tank constituting an inner tank to store a storage material therein; at least one sandwich plate modularized and manufactured include a metal plate provided in a pair opposite to each other, the metal plates having a reinforcing material formed therebetween, and a filler filled between the metal plates, the at least one sandwich plate surrounding the outer surface of the independent tank to constitute an outer tank; and an external reinforcing member formed on the outer surface of the sandwich plate.

A vacuum heat-insulating material includes: an outer cover material; and a core material which is sealed in a tightly closed and decompressed state on the inside of the outer cover material. Outer cover material has gas barrier properties and satisfies at least one of a condition that a linear expansion coefficient is 8010.sup.5/ C. or lower when a static load is 0.05 N within a temperature range of 130 C. to 80 C., inclusive, a condition that an average value of a linear expansion coefficient is 6510.sup.5/ C. or higher when a static load is 0.4 N within a temperature range of 140 C. to 130 C., inclusive, a condition that an average value of a linear expansion coefficient is 2010.sup.5/ C. or higher when a static load is 0.4 N within a temperature range of 140 C. to 110 C., inclusive, and a condition that an average value of a linear expansion coefficient is 1310.sup.5/ C. or higher when a static load is 0.4 N within a temperature range of +50 C. to +65 C., inclusive.

An energy storage apparatus includes a energy storage for storing water and compressed gas; a concrete layer surrounded the energy storage; an inner protection layer arranged on an inner surface of the energy storage.

The present invention relates to containment system for a cryogenic fluid. The system comprises a wall defining an interior space for containing the cryogenic fluid, the wall having an interior surface facing the interior space. the cryogenic fluid comprises liquefied gas At least a portion of the interior surface being provided with a thermal insulation barrier comprising a layer of a material having a contact angle which is at least 150 for the cryogenic fluid.

A method of forming a polymer concrete CNG tank by forming an inflatable liner member composed of high density polymer impermeable to CNG; providing column forms as part of the liner member, the column forms having open tops and open bottoms and extending completely through the liner member; providing an outer form; positioning the liner member within the outer form with the column forms vertically oriented, the liner member being positioned to provide a gap between the liner member and the outer form; inflating the liner member; pouring polymer concrete about the liner member and through the column forms; and allowing the polymer concrete to cure. Reinforcement members may be positioned around the liner member and within the column forms prior to the step of pouring the polymer concrete.

Systems and methods for recovery, storing and utilizing heat energy during compressed gas energy storage are disclosed. In an example, a system for storing energy in a form of compressed gas, comprising: one or more energy storage vessels for storing compressed gas, said energy storage vessels each comprising: a wellbore provided in a subsurface; and a casing placed within the wellbore and cemented to a surrounding geological medium, the casing defining a volumetric space for storing the compressed gas; and a geothermal reservoir formed at the surrounding geological medium of the one or more energy storage vessels for underground thermal energy storage, wherein a portion of thermal energy of the compressed gas stored in the one or more storage vessels is conductively transferred to, via the one or more storage vessels, the surrounding geological medium, and stored in the surrounding geological medium.