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Wastewater contains thermal energy, and we can recover some of this energy with heat pumps.
With our TEST thermWin system for heat recovery from sewage we withdraw sewage from the sewer, screen it, pump it through above-ground Heat Exchangers, and then return it back into the sewer.
Because we screen and pump the sewage, we can use compact and cost-effective heat exchangers wherein we generate a well-defined and turbulent flow for efficient heat transfer.
For screening we use a vertical screw screen that is compact and lifts the screening through its vertical auger. Returned sewage flushed the lifted screenings over a chute back into the sewer.
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