Still sitting on my hard disk are numerous Sankey diagrams I have yet to describe and post them here. The ‘Miscellaneous (Mostly) Uncommented’ series is a way to get them out to you.

A Sankey diagram from process engineering. This one is from a poster by Monika Szolucha from Warszwaw Polytechnic.

Google Translate tells me this is from a stationary membrane filter equipment that enriches methane content in biogas. Flows show throughput in kg per hour.

The ‘Blog Audytorów Sledczych’ had two interesting Sankey-style diagrams.

The first is the trade balance of Poland for the month January 2014. Flows are in Euro (trade volume). There is a trade surplus of 176,4 million Euros. Unfortunately only the legend shows what the arrow colors mean, but it is not legible in this screenshot.

The second one focuses on the five main trade partners of Poland. Here the value of imported goods is higher (8,7 billion Euro) than the value of exported goods (8,5 billion Euro).

Again the legend is somewhat difficult to decipher, but we can see Germany, Czech Republic, UK and Russia. Largest trade partner (both regaring import and export) is Germany (large orange arrows).

Trade imbalance is visually barely noticeable, just by a slight step when looking at the incoming and outgoing arrows.

Just before I kick off for a short weekend trip, here is another Sankey for you to enjoy. It is from the Polish language Wikipedia and shows production of KClO3.

This is more of a schematic flow diagram, as it doesn’t show any quantities. The blue boxes are processing steps. Two nice recycling loops in there from the crystalization step back to the electrolysis and from the other crystalization step back to the refining. ‘Szlam’ seems to be sludge. The individual Sankey arrows don’t show an arrow head, but little gray arrows indicate the flow direction from top to bottom.

The whole Sankey just looks kind of odd, because the main product flow is not aligned vertically. But then again, that’s up to the designer. After all, it is a fine sample of a process flow Sankey diagram.

I neglected the followers of for almost two months … had a surgery done, but now I am back for good.

Just to get started without any further delay, here is a Sankey diagram I dug out from my collection.

Not sure on which website or in which article I found this, but it is still hosted on imageshack.

The diagram is from Poland and seems to show cogeneration. Flows represent percentages and are not always to scale (compare 10% flow ‘Straty’ and 35% flow labeled ‘Energia elektryczna’). The label “1%” on the flow for ‘Kolektor spalin’ must be a mistake, I reckon it should read “7%”.

More postings in the next days…

On my quest for more interesting Sankey diagrams I stumbled across a wykres Sankeya on a web page from Poland, which I reproduced here using ifu’s e!Sankey tool.

It shows the advantage of energy cogeneration plants over energy production in separate plants. From a base value of 100 a yield of 85% can be reached in cogeneration plants (35% electric energy, 50% heat energy – the original text accompanying the diagram says 30% electric energy, 55% heat energy) with 15% losses. To get the same energy amount from separate energy generation plants, the required energy feedstock is 1.48 times higher, with losses more than four times higher (63:15), especially originating from the generation of electricity.

While I am far from fostering one or the other technology with this post, I think this Sankey diagram merits special attention, because it is actually a 2-in-1 diagram (both with flow direction left-to-middle and right-to middle) and a baseline scenario comparison. A very nice idea!