Just before the weekend another Sankey diagram for you. One reader suggested I should present a Sankey diagram that contained an Easter egg (without specifying whether he meant flows going in a round, egg-like arrow path or a joke hidden inside the diagram)

Here is one from Japan. It has two loops, and qualifies as a joke too. Just look at the quantities displayed and you know what I mean…

This is from an NTT Technical Review article ‘Development of SOFC Power Generation Module with High Electrical Generation Efficiency’ by Yoshiteru Yoshida, Katsuya Hayashi, and Masayuki Yokoo.

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