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Exchangers: reduce the corrosion.

Echangeurs : réduire la corrosion.

Author(s) : GLOANEC Y.

Type of article: Article

Summary

The aluminium constituting the fins of outside air cooled condensers passivates rapidly by forming alumina, but becomes vulnerable to acid or alkaline media caused in general by pollution. Rain washes the surfaces, fog accelerates corrosion along with dust and alternating moist and dry cycles. The different types of corrosion are given: pitting, galvanic, cavernous corrosion, corrosion-erosion. Means of protection are proposed according to these types: chemical passivation, application of aluminium hydroxides, organic coatings, application of metal oxides. Tests of the material and coatings may provide an indication. Increase of condensation pressure of a corroded condenser causes an increased energy consumption by the compressor. J.L.

Details

  • Original title: Echangeurs : réduire la corrosion.
  • Record ID : 1993-2570
  • Languages: French
  • Source: La revue pratique du froid et du conditionnement d'air - n. 762
  • Publication date: 1992/11
  • Document available for consultation in the library of the IIR headquarters only.

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