Corrosion of heat recovery exchangers in swimming pool hall ventilation systems

Abstract

An investigation of the corrosion of swimming pool hall heat recovery exchangers at eight different sites has shown that exchangers using copper for both tubes and fins have adequate corrosion resistance, and can be expected to remain efficient and structurally sound for more than ten years. On the other hand, aluminium was found to be less suitable as a fin material because of its tendency to suffer localised dissimilar metal corrosion in contact with the copper tubes. Though the survey was limited, these findings are likely to apply to other pools using similar systems.