Patent ID: 6099208
Filing Date: 2000-08-08
Classification: E01H,E02B

Abstract:
An ice composite body for use in the construction of floating structures located in or on water, said body comprising an inner ice core of hard freshwater ice formed from water which has been degassed or deionised before freezing, a protective outer armour layer, means for thermally insulating the ice core and refrigeration means comprising a system of conduits for refrigerant within the body, said insulating means and refrigeration means being adapted, relative to the ambient temperature of the surrounding water, to maintain the ice core in a frozen condition, wherein the ice core is totally enclosed in said armour layer, and wherein when the structures are located in or on fresh water the ice core is maintained at a temperature of less than 0.degree. C. less a further 0.5.degree. C. for each 50 atmospheres of pressure experienced by the ice at its most stressed point, and when located in or on salt water the ice core is maintained at a temperature of less than -2.2.degree. C. less a further 0.5.degree. C. for each 50 atmospheres of pressure experienced by the ice at its most stressed point, said pressure including pressure shock waves experienced in normal use.