Walt Pyle

Hint: Download Solar Hydrogen Chronicles here, seminal practical work on applied hydrogen - here. Seminal in the sense that no other source has a comprehensive and applied background like this for small scale hydrogen production

Sun Dec 29, 2019

• Patent from the 60s - U of Arizona -
• Brown's gas Rhoads gas
• One advantage today is PEM electrolyzers, for hydrogen, but not oxygen.
• George Weisman - sells common duct electrolyzers. https://eagle-research.com/author/wiseman/
• Walt says an advantage is not buying gas from someone else. No consumables in water and electricity. Advantage is cleaner cut.
• Dry air if you want plasma cutter tips to last.
• Presentation by Walt - basics of Hydrogen - and emphasize the safety. in what's taugh in rhoads patent
• Weisman - figured out how to not vent and instead control the production rate more effectively. Probably with microcontroller?
• https://www.researchgate.net/profile/Walter_Pyle - list of Walt's publications.

More

• Walt pyle - founder, http://hionsolar.com/ - download Solar Hydrogen Chronicles from his site.
• PEM electrolyzer - elimination of gas cylinders. Got one on ebay - $120
• 60 psi storage
• 2 125 gal propane tanks
• 9 5 gallon tanks
• Homepower article right now - up for publication
• Hydrogen Wind, Lawrence Spicer - 8 yrs ago - bought more cells -
• Couple cells still from 1994.
• 12 cells - 2v cell - 30-40A at 2V - put it in series to do a 24 v system
• Spicer - 2 generation - envelope to separate the gases instead of fiberglass separator.
• Hydrogen Production article - downside - contamination on both sides - fittings etc -

• Catalytic recombiner
• bubbler

• For safety reasons, 2% of contaminant is required.
• Purifier gets you there.
• If there is a failure in electrolyzer, you can be storing
• Only hydrogen goes through palladium barrier.
• less important to Walt to produce oxygen bc of plasma cutter.
• High purity generators - are now making it safe.
• Barbecue on hydrogen.
• Common duct electrolyzer
• Flashback arrestor - section of pipe filled with sand.
• Cubic foot of hydrogen is 270 btu.
• propane - 2500 btu per cubic foot.
• Hydrocue - 4 liters per minute - 20-25 minutes to do a cooking session. 80 l.
• Liter per minute -
• modify an engine to run on hydrogen -
• Electrical contractor, electrical, mechanical engineer.
• Water splitting on thermal decomposition -
• Solar systems and alt energy
• Little wind and hydro, mostly solar electric.
• High end CNC machines.
• Cracking water and CO2. To make solar fuels.
• 70% of the hydrogen in the world goes to make electrolyzer.
• Interested in a decentralized system with onsite farmer ammonia
• Pressure-based elecrolyzer. Propane tanks normally rated to 250 psi.
• Spicer electrolyzer - good at 60 PSI.
• No because of the cleanup. $2500 electrolyzer - $3500 for cleaning up hydrogen
• Trickle -
• 1994 - $6k parts.
• I can deal with it, but I'm an engineer.
• Potassium hydroxide - is used.
• Perfluori ethylene, sulfonic acid chains. H ion to H molecule. Has catalyst on each side, Pt group catalyst. Sandwich.
• Ultrapure hydrogen unit. Lab tech product.
• Simple plans for oxyhydrogen cutting. Off the grid - Sunnyboy inverter - day power when grid is down. SV TLUS. Interesting solution - off-grid for day power.
• Solar hydrogen chronicles -