Hallingplast develops pipe system for storing excess heat in district heating Networks

At Furuset in Oslo, Hafslund Oslo Celsio is planning to build a heat storage facility in the bedrock to better utilise excess heat from the incineration plant at Klemetsrud.

Surplus energy from the facility will be used to heat water, which is then pumped into the bedrock during the summer when the demand for heat is low. The hot water will be stored there, and later in the winter it will be fed into the district heating network when the demand increases.

As a supplier to the project, Hallingplast will develop and deliver high-quality plastic pipe systems that can withstand temperatures above 95°C. There are currently no standards for the pipe systems required by the project.

"We are confident that we can deliver robust and safe pipe systems with a long service life, but it is a challenge that standards, regulations and test routines are not yet established for such solutions. Part of the work will therefore be to develop and obtain third-party certification for the product that documents the long-term effects. Here, innovation takes place in parallel with the development of regulations, standards and test routines," says Sverre Tragethon, CEO of Hallingplast.

The project is part of the EU Horizon-funded research project USES4HEAT, which will develop technology and conduct full-scale tests of two different technologies to contribute to the decarbonisation of Europe.