Mastodawn

#hydrogen101
NOx emissions are a major problem with all hydrogen internal combustion engines, including turboprops. Besides NO and NO2, they often emit N2O.
GWP100 of N2O is 265-300x higher than CO2.
I doubt China is using SCR to limit NOx.
H2 fuel cells have higher efficiency and emit no NOx.
#H2 #hydrogen #fuelcell

KeithDPatch May 1

#hydrogen101
☹️I feel sorry for these authors who embarrassed themselves by not even referring to a basic electrochemistry text!
#electrochemistry101 tells you that as the electrolyzer input power increases from zero, the efficiency decreases. The obverse is true as well.
#H2 #hydrogen #GreenHydrogen

KeithDPatch Apr 23

#hydrogen101 #PEC
SunHydrogen #sunhydrogeninc spins their weak Austin, TX test results:↙️

1) As my wicked-smart #GinerInc mentor Tony LaConti always said, "there's no such thing as a defect-free coating"

2) There's a good reason Nocera & his artificial leaf startup #SunCatalytix failed on the same task, and pivoted away from PEC!↘️

3) Don't forget, you can always over-build your solar, add a battery, and keep an electrolyzer running 24x7x365!
#hydrogen #H2 #photoelectrochemical #electrolysis

KeithDPatch Apr 22

#Hydrogen101 #pseudoscience #SMDH #science
You've heard you can indict a ham sandwich? Well, you can also patent one!

This "invention" magically spins and separates hydrogen gas #H2 & oxygen gas #O2 from water, then magically separates the #H2 from the #O2 & the water!

KeithDPatch Apr 13

#hydrogen101
1)↙️Re: MB's CleanTechnica #cleantechnica AI-slop: ↘️he missed the fact that a Joi Scientific chemist-employee-whistleblower debunked multiple #JoiScientific chemistry & 200% efficiency claims & caused their downfall!
2) NB Power lost C$13MM, not C$23MM
#hydrogen #H2

KeithDPatch Apr 10

#Hydrogen101
Germany's Ostermeier Hydrogen Solutions makes & sells complete small water electrolyzer systems that can run off your solar PV panels for grid independence.
Has compressed hydrogen storage & a fuel cell for Dunkelflaute or seasonal energy storage.
Either PEM or AEM electrolysis tech.
#H2 #hydrogen

KeithDPatch Apr 9

#Hydrogen101 #H2Safety
I know that only mice were involved in these inhalation therapy experiments, but 7% hydrogen in air is almost twice the flammability limit of 4%!💥

Don't forget about the humans who ran these lab experiments and were put in danger!

KeithDPatch Apr 9

#Hydrogen101
Ignoring bogus "hydrogen water" claims, hydrogen has legit therapeutical uses.

Sano(2018) describes therapeutic effects of #hydrogen gas therapy for emergency, critical care medicine, etc.

I've consulted on #H2 safety issues of using hydrogen gas mixes in therapies.

KeithDPatch Apr 8

#Hydrogen101
↙️Kabar to sell Hyting catalytic hydrogen oxidation-based heater systems that emit ZERO NOx. IOW, combustion!↘️

Furney (2018) says catalytic hydrogen oxidation NOx emissions are low, not ZERO!↘️↘️

Hyting claims 3% #H2 is safe. BUT safety regulations say 2% H2 is safe. PLUS 100% #hydrogen fuel is supplied before being diluted! Hyting still needs "rigorous explosion protection measures"!

KeithDPatch Mar 24

#Hydrogen101 #PFAS101
PFAS underpin today's highest‑performing PEM fuel cells and electrolyzers...and other systems.
They also just got excluded from my business insurance.

If you work with PFAS in hydrogen tech, the risk isn’t "future" anymore – it’s now.
#hydrogen #H2 #fuelcell #electrolyzer