| 摘要 |
<p>The present invention relates to a low-temperature fluid cold insulation member wherein occurrence of dew condensation on the surface of an outer covering material thereof and eventually corrosion of the outer covering material can be prevented regardless of the environments in which the low-temperature fluid cold insulation member is installed. This low-temperature fluid cold insulation member comprises: a space through or in which a low-temperature fluid passes or is stored; a cold insulation material that surrounds the space; and a coated outer covering material that covers the cold insulation material and has a coating film on the outer surface. When the arithmetic average surface roughness of the recesses and projections on the coating film surface is represented by Ra and the mean spacing of profile irregularities of the recesses and projections is represented by Sm, Sm is more than 45 µm and the convective heat transfer coefficient hc (W/m2/K) determined by formula (1) is not less than 6.7. hc = 6.2793 + 0.0568Ra + 0.000627Sm (1)</p> |
