The current sources and uses of hydrogen.

[NNadir]

I'm catching up on some back reading. The following graphic came from this paper: Progress on Catalyst Development for the Steam Reforming of Biomass and Waste Plastics Pyrolysis Volatiles: A Review Laura Santamaria, Gartzen Lopez, Enara Fernandez, Maria Cortazar, Aitor Arregi, Martin Olazar, and Javier Bilbao Energy & Fuels 2021 35 (21), 17051-17084

Here's the graphic:



The caption:

Figure 1. Global current sources of H2 production (a), and H2 consumption sectors (b).

All of the primary energy sources in the pie chart in (a) have more energy than the hydrogen produced using them. This is the result of the 2nd law of thermodynamics.

Yet we still have people, year after year, decade after decade, calling this waste of primary energy in a shell game "green."

It's difficult to believe, but perhaps this is why we are seeing carbon dioxide concentrations scraping 421 ppm this week, less than ten years after we first saw concentrations of 400 ppm.

My feeling is that people should be required to have a passing familiarity with the laws of thermodynamics before being awarded a high school degree. It won't happen, but I think it should.

[Miguelito Loveless]

1. Gosh, another thing we agree on.

H2 economy is uneconomical, and mostly not green.