The first demonstrator will be installed in the production and drying of starch from potato, wheat and corn. The useful supply temperature of the novel heat pump system will be around 130 to 160 °C; the heating capacity will be around 600 kW.
Starch is dried by using hot air. Heating of the air is realised in three consecutive steps, namely preheating by a heat recovery cycle (HRC), heated by waste heat from another dryer, heating by steam condensate and heating by steam After reaching the target temperature, the air is sent to the dryer. To gain more energy from the HRC, a demonstrator heat pump unit (600 kW) will be installed. This unit will use heat from the return of the HRC as a heat source, and will supply this heat at temperatures up to 160 °C to the heat exchanger. The demonstrator unit implemented in Dryifciency will cover approximately 25 % of the full heat recovery potential available on site.