we have liq. ammonia storage tank (capacity 40000 ton)having double wall & suspended deck.liq. NH3 stored at temp -33 degree cent. insulation (form ) being provided to annular space (wall ) but not on top roof . can you explain for exact reason.with regardsanvar shaikh
Insulation is less necessary on the roof. The ammonia is mostly a liquid, and a liquid would absorb heat rapidly from tank walls. Above the liquid is vapor, and vapor absorb heat much less rapidly than liquid does, so insulation is less important there.
