| 摘要 |
PROBLEM TO BE SOLVED: To provide a functional decrease reducing unit for a tubular heat exchanger. SOLUTION: The functional decrease reducing unit for the tubular heat exchanger comprises a type including at least one turbulent flow generating element contacted with a medium disposed in one tube of the exchanger, and containing a hydrocarbon or particularly a crude oil during using. The reducing unit is manufactured by a metal alloy containing a nickel content of 50 wt.% or more and, in addition, at least one type of a metal selected from the group consisting of a chromium and a molybdenum so as to improve its corrosion resistance. |
