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District Heating and Cooling including Combined Heat and Power

Annex IV Project 08

The Research / IEA DHC Annexes / 1993-1996 / Annex IV / Annex IV Project 08

Review of European and North American water treatment practices

Project Downloads


This project outlines the European approach to water treatment and corrosion prevention in hot water district heating systems and describes commonly used North American treatment methods. The objective is to make information and operating experiences from a European perspective available to North American system operators.


The results from the project are available in a report that is based on the system being used at Nordvärme in Finland.The fiollowing issues are discussed:

- Corrosion and water treatment in Nordic District heating systems; Experience and Practice
- Evaluation of closed water corrosion inhibitors and in-service removal of chromate deposits in closed water systems
- Corrosion protection strategies for hot water district heating systesm: Two case studies

Downloadable Documents

Review of European and North American water treatment practices
[Summary Report - PDF - 3-pages, 18Kb]

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