Corrosion in Heat Exchangers

Corrosion in Heat Exchangers Table of Contents Introduction.........................................................3 Corrosion Problems..............................................6 References.........................................................15 Section 1 Introduction Heat exchangers are commonly used to transfer heat from steam, water, or gases, to gases, or liquids. Some of the criteria for selecting materials used for heat exchangers are corrosion resistance, strength, heat conduction, and cost. Corrosion resistance is frequently a difficult criterion to meet. Damage to heat exchangers is frequently difficult to avoid.                   There are many variables related to specifying heat …

…external and easy to detect. The small refrigerant volume allows for rapid emptying and opening the unit. The faulty plate or gasket could easily be removed or replaced, and the plate pack quickly reassembled. Leakage in shell-and-tube chillers could go unnoticed for a long period of time, causing severe damage to the system, and take days for expensive repairs to be completed. Rolled threads and zinc plating the bolts gives a stronger, corrosion resistant thread.