Hybrid Heat Pump delivered to the wastewater treatment plant Frevar in Fredrikstad, Norway.

Hybrid Energy AS recently commissioned a two-stage hybrid heat pump at the wastewater treatment plant Frevar in Fredrikstad.

The heat pump system retrieves waste heat from the biogas upgrading plant and from sanitized wastewater. The heat is reused in the biogas upgrading process, in buildings and other technical processes in the wastewater treatment plant.

Although the Hybrid Heat Pump is designed to deliver 95 °C, it has delivered 110 °C without strain during testing.