KHIA headerKnow-How in Action

VOL XXII, NO 62

Belzona® Extends Chiller Life

 
 

Industry:

Heating, Ventilation & Air Conditioning (HVAC)

 
 

Application:

Heat Exchangers (HEX)

 
 

Customer Location:

International Airport, Stockholm

 
 

Application Date:

2005, 2008

 
 

Application Situation:

Three chiller units for air conditioning of terminal buildings.

 
 

Problem:

Corrosion on tubesheets (4) from one of the chillers was noticed in 2005. Cooling water comes from a local lake which together with galvanic effects was the cause of the corrosion.

 
 

Products:

Belzona® 1311 (Ceramic R Metal)

Belzona® 1321 (Ceramic S Metal)

 

Substrate:

 
 

Application Method:

Application was carried out in accordance with Belzona System Leaflet HEX-1. Surface preparation included steam cleaning to remove salt contamination.

 
 

Belzona Facts:

In 2008, the chillers were inspected and the two untreated ones were found to have severe erosion, whereas the Belzona protected one was still in excellent condition.

 
 

Photographs Description

  1. General view 
  2. Close up of erosion on tubesheet 
  3. Steam cleaning 
  4. Completed application
 
Case study pic one

 

 
 Case study pic two

 

 
 Case study pic three

 

 
 Case study pic four

 

 
 
For more information about Belzona visit: www.belzona.com