As I am cleaning out my office – throwing away old notes, brochures and journals – I came across a November 2011 copy of German ‘UmweltMagazin (Environment Magazine). It has this Sankey diagram in an article on CO2-neutral steam generation for bioethanol production.


This Sankey diagram is in German. Flows are kW. This is for a small-scale plant at an agricultural business and heat is used for a destillation unit. The input feed to the steam boiler is primarily off-heat from a CHP plant fired with biomass. Losses are shown as grey arrows, steam as lilac arrows and heat in red. Condensate recovered at the heat excanger is fed back into the steam boiler (green loop).

Sorry for the quality of the scan. And Happy New Year to all of you! Will be back in 2019 with more Sankey diagrams.

Leave a Reply