UHRIG Energy

Inside the pipeline: Therm-Liner B

Type B is installed in classic gravity pipelines. The modular heat exchanger system can be installed in both new and old pipes and dismantled at the end of its service life.

Are you interested in learning more? Ask us!

Therm-Liner B


Scope of application
  • Gravity pipeline and treatment plant discharge point
  • For size DN 400 / 16’’ upwards, ideally DN 800 / 32’’ or larger
  • For remediated and unremediated pipelines
  • Through the existing manhole infrastructure
  • Under dry conditions with water retention
  • Method of attachment depends on pipe material
  • Adapted to the shape of the pipeline
  • Modular extension possible
  • Large heat exchange area per meter
  • Internal solution; installation inside gravity pipeline
  • Minimally invasive installation through existing infrastructure
  • For remediated and unremediated pipelines

Wastewater heat: components

UHRIG Energy specializes in the ready-to-use construction of heat exchanger systems that connect to the top edge of the pipeline. In order to utilize the thermal energy harvested, it is also necessary to have an interface to the heat pump and the heat pump itself – i.e., three components all together.

  • Heat exchanger: delivers the thermal energy from the pipeline
  • Interface: flow and return pipes, connection to heat pump
  • Heat pump: for regulating the temperature inside the building

For some projects, UHRIG also offers to plan and build the interface. Just talk to us if you’re considering an all-in-one solution.

Our services

Our goal is to remove barriers and simplify processes for our customers. That is why we provide ready-to-use systems for harvesting energy from wastewater. We:

  • plan
  • build
  • install
  • operate and finance

In concrete terms, this means that we not only harvest the heat from the wastewater, but also transport it to the heating center. Once it reaches the heat pump, that is where our customers take over and refine the thermal energy obtained from the wastewater. The heat pump uses electricity to bring the heat to the exact temperature required in the building.


Every project is a custom solution

The wastewater pipelines in Germany have always been different sizes and dimensions. For instance, they could have a circular, oval, or box profile. On top of that, they could be made from any one of a number of possible materials. This is why every wastewater heating project is a custom solution.

After manufacturing our first hundred systems in a factory, we then switched to automated, serial production. Despite this standardization, we can still adapt to the specific situation in each individual pipeline, which is one of our key strengths.

It is this very expertise that makes us able to also serve the vastly different framework conditions and requirements in countries other than Germany.

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