How does the Therm-Liner recover energy from wastewater?

The Therm-Liner heat exchanger is a stainless steel module with an integrated water circuit. We can install our modules in any wastewater pipeline with a nominal diameter of DN 400 / 16’’ upwards. The water in the module is colder than the wastewater in the pipeline, so the wastewater running over the module heats it up. This means that a heat transfer takes place even though the wastewater never comes into contact with the water in the module. The stainless steel acts as the conductor. The heated water flows from the module through a pipe to the central heating system which forms the feed and return line to the heat pump. The systems run on tap water or a mixture of water and glycol. The heat pump, using a small amount of electricity, then makes the wastewater energy usable. One kWh of heat generated in this way consists of 75% wastewater energy and only 25% electricity – for optimal energy efficiency and climate protection.

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