The Therm-Liner heat exchanger is a stainless-steel module with integrated water cycle. We can install our modules in any sewer at all with a nominal diameter of at least 400 mm. The water in the module is colder than the wastewater in the sewer, so that the water in the module is warmed by the wastewater flowing over the module. This means that a heat transfer take place, although the wastewater and the water in the module are not in contact. The heat is transmitted via the stainless steel. The water, which is now heated, flows from the module through a pipe to the heating plant and forms the forward and return flow to the heat pump. Using a small amount of power, the heat pump makes the energy extracted from the sewer usable. A kWh of heat generated in this way consists of 75 % energy from wastewater, with only 25 % from electricity – this is energy efficiency and climate protection in action.
