LIQUEFIED NATURAL GAS PIPELINE WITH NEAR ZERO COEFFICIENT OF THERMAL EXPANSION

摘要

The invention provides a pipe assembly for containing and transportingcryogenic temperaturefluids. The pipe assembly comprises an inner pipe, a composite overwrapcapable of enduringexposure and stress at cryogenic temperatures, and an outer pipe that ispositioned around thecombined composite overwrap and inner pipe to create an annular space providedwith thermalinsulation. Laminate plate theory and optimization software are utilized toreach an overallcoefficient of thermal expansion near zero for the combined inner pipe and thecompositeoverwrap.