Non-destructive methods for assessment of district heating pipes: a pre-study for selection of proper methods
Paper in proceedings, 2017

Many energy companies are facing renewal of their district heating and cooling (DHC) network. However, there are no non destructive methods to determine the performance of existing pre-insulated pipes during operation. A pre-study has led to a selection of a couple of non-destructive methods that will be further evaluated and tested in field and in laboratory. Two non-destructive methods, individually or in combination, are considered interesting for further studies. A cooling method and a method for evaluation of the temperature coefficient of resistance (TCR), which aims at using the existing copper wire in pre-insulated pipes.

Cooling methods

District heating pipes


lifetime status

non-destructive methods



Peter Lidén

Chalmers, Civil and Environmental Engineering

Bijan Adl-Zarrabi

Chalmers, Civil and Environmental Engineering

Energy Procedia

18766102 (ISSN)

Vol. 116 374-380

Subject Categories

Civil Engineering



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