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