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Energy from Wastewater

Energy from Wastewater
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WASTE WATER Solutions Heating and cooling with wastewater Recovery of thermal energy from municipal and industrial wastewater

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sewer wastewater shaft with HUBER screen and delivery pump HUBER RoWin Heat Exchanger heat pump HUBER ThermWin® system for the recovery of energy from wastewater HUBER ThermWin® system The HUBER ThermWin® system is used to recover the energy from wastewater. Via an intake structure a portion of the sewage flows from the sewer into a screen that retains coarse solids. The pre-screened wastewater is lifted and flows by gravity through the above ground installed heat exchanger. This creates continuously stable hydraulic conditions and ensures a controlled heat transfer. In the HUBER RoWin Heat...

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Municipal, domestic wastewater is available as an energy source in every settlement area. Heating and cooling energy from wastewater Right below the ground, in sewers, is a hidden and seldom used source of energy: domestic, municipal wastewater with a temperature of 12 °C to 20°C. Even during winter the wastewater temperature hardly ever drops below 10 °C. This makes wastewater an excellent energy source for the operation of a heat pump. A heat exchanger is required to extract the heat energy contained within the wastewater. The heat exchanger transfers the thermal energy from the...

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WASTE WATER Solutions a HUBER TubeWin Heat Exchanger installed in the sewer b heat pump Schematic drawing showing how the heat exchanger elements are arranged in the sewer HUBER TubeWin Heat Exchanger Another possibility to extract energy from wastewater is the installation of heat exchanger elements directly on the sewer base. Such a solution is the HUBER TubeWin Heat Exchanger. Due to its flat and robust design the HUBER TubeWin Heat Exchanger can be installed in sewers as small as one metre diameter. The thermal energy contained within the wastewater flow is transferred to a cooling...

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Municipal wastewater; 260 kW heat output used to heat apartment buildings > 7,000 m2 Municipal wastewater, 585 heat output, 605 kW cooling capacity, used to heat and cool an about 22.000 m2 size oce building Industrial plant, 90 kW cooling capacity with simultaneous heat output of about 120 kW, used for process optimisation Example of a containerised solution with about 60 kW heat output used to heat a sports and day-care centre for children Wastewater from a swimming bath, about 450 kW heat output used to heat the swimming bath 120 kW cooling capacity used to cool a storage building

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A continuous wastewater flow of approx. 5 l/sec is required to ensure efficient heat recovery. ➤ Combined heating and cooling WASTE WATER Solutions ➤ Recovery of heat energy and/or hot water ➤ Suitable for installation in nursing homes, hospitals, schools, sports halls, etc. ➤ Feeding recovered heat into local heat distribution networks The minimum output of useful heat for economic heat recovery from wastewater is approx. 20 kW. The wastewater temperature should not fall below 10 °C. The efficiency of heat pumps increases with decreasing temperatures of energy usage. Especially beneficial...

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