Condenser Tube and Air Conditioning Systems Corrosion
Experts in Corrosion, Metallurgy and Engineering
 POWER CORROSION (CONSULTANTS) LTD
Power CCL - Consultants for Condenser Tube and Air Conditioning Systems Corrosion
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  POWER CORROSION
  (CONSULTANTS) LTD.


   Ashby de la Zouch
   Leicestershire
    United Kingdom


   Email: enquiries@powerccl.co.uk          
   Tel: +44(0)1530 412418
 

   Web:  www.powerccl.co.uk
 
 
   Last Updated: 09-Mar-17
 
Condenser Tube Plate Corrosion
Corrosion

Scaling

Biofouling

These will occur in condenser tubes and on tube plates if the cooling water is not correctly chemically conditioned. We investigated this incident and advised that the circulated water had been at too low pH.
Deposit Attack on Condenser Tube Showing Pitting Deposit attack

Pitting

Cupro-nickel condenser tubes were pitted by deposits on the cooling water side. We advised on the required maintenance of the condenser waterside to protect against deposition  and corrosion. 
Corroded Condenser Tube Plate
Sacrificial anode


Galvanic corrosion

Passivation

Cupro-nickel and brass condenser tubes require a period of  exposure to a steady flow of clean aerated seawater to form a passive layer to resist corrosion.  This condenser was fitted with sacrificial anodes fabricated in the wrong material. The passivation process failed local to the anodes and corrosion initiated

 
Epoxy protected Tube Plate, Sometimes Seen in Air Conditioning Systems Epoxy coating

Erosion-corrosion

Particle erosion

It is good practice to epoxy coat the tube plates of condensers. This will protect against general corrosion, galvanic corrosion, erosion-corrosion and particle erosion. It is important that the correct epoxy formulation is used and suitably applied.
We can advise on this.
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