Hydraulic and earth engineering – Marine structure or fabrication thereof – Storage container
Patent
1998-05-08
2000-12-26
Taylor, Dennis L.
Hydraulic and earth engineering
Marine structure or fabrication thereof
Storage container
405204, E02D 2738
Patent
active
061648728
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to a method of manufacturing a large tank for use as an oil tank or a CO.sub.2 storage tank, for use in building a submerged tunnel, a submarine living quarter or a submarine station, or for use as a battery tank.
The invention also relates to a combined system for deep-sea power storage and carbon dioxide dissolution.
Further, the invention relates to a deep-sea power storage system for generating electric power by using sea water.
Still further, the present invention relates to a submarine power storage system which is installed in the deep sea and which stores electric power by utilizing the pressure of sea water.
Moreover, this invention relates to a submarine storage system designed to store, for example, LNG.
Furthermore, the present invention relates to a method of building a submerged tunnel for drive ways and railroads, which runs on the seabed.
BACKGROUND ART
Conventionally, a submarine tank is built on land, in a horizontal position in a dock large enough to hold the entire tank.
A system may be constructed by using as large a tank as possible, for example, a cylindrical tank having a diameter of 100 m and a length of 400 m. Building of such a large tank on land is subjected to various restrictions. Hence, tanks that can be built on land are limited in size.
More specifically, if a large tank is manufactured on the land, its size is limited by the size and proof strength of the dock, and also by the draft of the dock and the depth of the neighboring water passages.
An object of the invention is to provide a method which can manufacture a tank that is too large to be built on land.
Such a large tank finds use in, for example, thermal power plant. A thermal power plant is located near the seacoast in most cases. The carbon dioxide gas (carbon oxide gas) generated in the thermal power plant will result in environmental disruption such as air pollution. Attempts have been made to dissolve the gas in sea water and thereby discard the gas, by using various methods.
More precisely, (1) a method of dissolving the carbon dioxide gas generated in the thermal power plant, directly in sea water; (2) a method of solidifying the carbon dioxide gas into dry ice and sinking the dry ice onto the sea bottom: and (3) a method of liquefying the carbon dioxide gas aboard a ship and dissolving the gas in the sea water, over a sea zone 100 m wide.
With the method (1) it is difficult to dissolve the carbon dioxide gas sufficiently. Furthermore, there exists the danger that the carbon dioxide gas blows up over the sea surface.
The methods (2) and (3) may render the sea water strongly acid. This is because the liquefied or solidified carbon dioxide is dissolved in the sea water, inevitably increasing the carbon dioxide concentration in the sea water, making the sea water strongly acid.
Consequently, the methods (2) and (3) affect the deep-sea life. The methods (2) and (3) may also induce environmental changes because it lowers the temperature of sea water. Further, a great amount of energy is required to perform the methods (2) and (3), in which carbon dioxide is solidified into dry ice and liquefied, respectively.
The present invention has been made in view of the above. An object of the invention is to provide a combined system for deep-sea power storage and carbon dioxide dissolution, which can store power, causing no cavitation of a high-head pump turbine, and which can dissolve and discard carbon dioxide at low cost, not affecting marine ecology or causing environmental changes.
The conventional power system is disadvantageous in the following respect. Hitherto known is a pumped storage power system in which water is pumped up at night by using surplus electric power, and electricity is generated in the day when the power consumption is at its peak. However, geographical conditions for a pumped storage power system are restrictive, and the building cost of the system is increasing much. In view of this, it has become difficult to construct new pumped storage power pl
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Marine Engineer and Naval Architect, Dec. 1 19969 (1969-12-01), p. 525 XP002135559, "INSTANT 10,000 hp at 12,000 FT DEPTH"
Mitsubishi Heavy Industries Ltd.
Taylor Dennis L.
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