Many thanks to Terry Harvey from Magnetic for the training session he delivered to our Management Team today.
Who is the VDI?
Taken from Magnetic’s website – link to page – https://www.magnetic-online.de/en/vdi-2035
Verein Deutscher Ingenieure (VDI) (English: Association of German Engineers) is an organization with over 150,000 engineers and natural scientists. More than 12,000 honorary experts process the latest findings every year to promote the technology location. Established in 1856, the VDI is today the largest engineering association in Western Europe. The role of the VDI in Germany is comparable to that of the American Society of Civil Engineers (ASCE) in the United States or Engineers Australia (EA) in Australia barring the broader field of work of the VDI. The VDI is not a union. The association promotes the advancement of technology and represents the interests of engineers and of engineering businesses in Germany.
Source: wikipedia
Theory and practice
Theory and practice
If the heating is properly filled, no deposits can form and the corrosion is reduced to a minimum. Should damage nevertheless occur, there are various reasons. The causes of heating damage can be: Too much oxygen in the water, mud has formed or/and the ph is in the acidic range.
But what does “properly filled” mean?
The VDI guideline published by the Association of German Engineers (VDI)2035 places demands on the fill water, both the scale formation as well as (the oxygen as well) affect electrical conductivity. A Pure water softening is therefore not sufficient.
Which parameters should therefore be considered?
| electric conductivity at 25° C | µS/cm | < 100 |
| german hardness at 25° C | °dH | < 3 |
| pH value at 25 ° C | 8,2 – 10 / 8,2 – 9,0 (aluminium) |
See more details on the Magnetic website as per link above.
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