The research team at DBFZ has published an interesting study on sustainability and cost effectiviness of the DRALOD drying plant concept:

Mutlu, Ö. Ç., Büchner, D., Theurich, S., & Zeng, T. (2021). Combined Use of Solar and Biomass Energy for Sustainable and Cost-Effective Low-Temperature Drying of Food Processing Residues on Industrial-Scale. Energies14(3), 561.

They have performed steady-state simulations in Aspen Plus to model a drying plant with demand-oriented heat supply by a solar wall combined with a biomass boiler. Time-resolved energetic evaluation has been conducted to analyze the impact of different operational strategy on the economic performance of the plant.

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DRALOD is co-funded by the European Commision - Horizon 2020 Programme - under Grant Agreement 820554