Insulated tanks for liquefied gases

Patent · Tue Feb 27 04:00:00 EST 1979

OSTI ID:6231636

Tonnessen, A

To improve the thermal efficiency of skirt-supported cargo spheres used in ocean transport of LNG, Norway's Moss-Rosenberg Verft A/S proposes an improved skirt support that incorporates a section of load-bearing material with low heat conductivity relative to that of the tank wall and rest of the skirt, such as 18-8 stainless steel. This heat brake reduces heat flow through the skirt to the tank wall by 40 to 50%, lowering the tank's total heat gain by 15 to 25% depending on the tank's insulation system. Because the heat brake is specifically designed to withstand low temperatures and match the thermal-expansion coefficient of adjacent materials, the new support method equals the structural integrity of previous methods.

• Assignee: Moss-Rosenberg Verft A/S
• Patent Number(s): US 4141465
• OSTI ID: 6231636
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
032000 -- Natural Gas-- Transport
Handling
& Storage
36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ALLOYS
CHROMIUM ALLOYS
CONTAINERS
CORROSION RESISTANT ALLOYS
EFFICIENCY
ENERGY SOURCES
EUROPE
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
IRON ALLOYS
IRON BASE ALLOYS
LIQUEFIED GASES
LIQUEFIED NATURAL GAS
MARITIME TRANSPORT
MECHANICAL STRUCTURES
NATURAL GAS
NORWAY
PHYSICAL PROPERTIES
SCANDINAVIA
SHIPS
STAINLESS STEELS
STEELS
SUPPORTS
TANKER SHIPS
TANKS
THERMAL CONDUCTIVITY
THERMAL EFFICIENCY
THERMAL INSULATION
THERMODYNAMIC PROPERTIES
TRANSPORT
WESTERN EUROPE