I came across this photo (left) on Wikipedia's High Pressure Electrolysis page the other day. FYI, it is the only photograph of an electrolyzer on the Wikimedia Commons Electrolysis page. It is a picture of a Giner Electrochemical Systems, LLC (GES) electrolyzer that is capable of producing 0.35 kg of hydrogen per hour at 1250 psi, with simultaneous production of ambient pressure oxygen. Wikipedia Commons obtained the photograph from a presentation titled Low Cost, High Pressure Hydrogen Generator made at the U.S. Department of Energy (DOE) 2008 Hydrogen Program Annual Merit Review Meeting.
In that presentation, GES presented results on one of its DOE electrolyzer R&D programs. Page 16 includes a photograph (right) of a GES electrolyzer system being benchmarked at the National Renewable Energy Laboratory (NREL). As it turns out, I was the one who traveled to NREL to help them start up the electrolyzer. Also installed at the NREL lab were:
- Solar panels and wind turbines, which were connected to
- An electrical management system, including DC/DC converters, AC/DC converters and batteries,
- With two other commercial electrolyzers, in addition to the GES electrolyzer
- Hydrogen storage, including a hydrogen compressor
- A 60 kW hydrogen-fueled internal combustion engine/generator set.
GES is shipping another electrolyzer system to NREL for testing in the next year.