Did Bush Just Pocket Veto The Border Fence Bill? (Answer: No) | Main | Kickass Telemarketer Prank
October 09, 2006

On Fuel Cells

I assumed, it seems wrongly, that BMW's cars would be combusting H2, the same way pretty much an engine compusts gasoline vapor.

Entropy says I'm all wet, and I believe him, partly because I've just never grokked this whole "fuel cell" dealio. Even when I actually had to teach people about fuel cells for the MCATs. I just sort of vagued it all. Repeated what was in the book. Had no frickin' idea what they were talking about.

Apparently there is a chemical reaction going on -- hence the "fuel part" -- which liberates energy, but it's not actually burning it:

Fuel cells create water by mixing H with O, yes. Absolutely.

But they do not turn use mechanic or kinetic energy. They don't use the expanding (because of heat) H2O to push a piston.

They're actually collecting electric energy from the reaction by forcing the hydrogen to follow a certain path to get to the oxygen, which energizes the circuit the electrons pass through.

It actually has to remain rather cold to work. If it starts blowing up, it will destroy the fuel cell. The water is hot, yes, but the heat is not where the energy is coming from and would be avoided if it could.

Elemental hydrogen is being burned. Somewhat. Yes.

Still, you've got a big tank of H2, yes?


digg this
posted by Ace at 07:09 PM

| Access Comments




Recent Comments
Duke Lowell : "Hmmmmmmm. Weird. ..."

Slapweasel, (Cold1), ([b]T[/b]) Baseball Nut [/i] [/b] [/u] [/s]: "*Boom-Shakka-Lakka!* ..."

Alberta Oil Peon, survivor of GNAMM: "Coolest physics demo I saw was a standing wave, di ..."

buzzion: "[i]386 Oh dear, am I gonna go all militant German ..."

tu3031: "Went to school near there in the 80's - very Irish ..."

2009Refugee: "Oh dear, am I gonna go all militant German Left Wi ..."

buzzion: "[i]381 Baader-Meinhof. Posted by: flounder, rebel ..."

flounder, rebel, vulgarian, deplorable, winner: "Coolest physics demo I saw was a standing wave, di ..."

riktheYFITB: "Know how there's one (1) Howard Johnson's restaura ..."

Bob @ NSA: "[i]I had never heard of that bowling ball demo, th ..."

flounder, rebel, vulgarian, deplorable, winner: "Baader-Meinhof. ..."

Professor Chaos aka gumdrop gorilla: "This Damon Affleck thing is also not good for Jimm ..."

Recent Entries
Search


MuNuvians
Polls! Polls! Polls!
Frequently Asked Questions
The (Almost) Complete Paul Anka Integrity Kick
Top Top Tens
Greatest Hitjobs

The Ace of Spades HQ Sex-for-Money Skankathon
A D&D Guide to the Democratic Candidates
Margaret Cho: Just Not Funny
More Margaret Cho Abuse
Margaret Cho: Still Not Funny
Iraqi Prisoner Claims He Was Raped... By Woman
Wonkette Announces "Morning Zoo" Format
John Kerry's "Plan" Causes Surrender of Moqtada al-Sadr's Militia
World Muslim Leaders Apologize for Nick Berg's Beheading
Michael Moore Goes on Lunchtime Manhattan Death-Spree
Milestone: Oliver Willis Posts 400th "Fake News Article" Referencing Britney Spears
Liberal Economists Rue a "New Decade of Greed"
Artificial Insouciance: Maureen Dowd's Word Processor Revolts Against Her Numbing Imbecility
Intelligence Officials Eye Blogs for Tips
They Done Found Us Out, Cletus: Intrepid Internet Detective Figures Out Our Master Plan
Shock: Josh Marshall Almost Mentions Sarin Discovery in Iraq
Leather-Clad Biker Freaks Terrorize Australian Town
When Clinton Was President, Torture Was Cool
What Wonkette Means When She Explains What Tina Brown Means
Wonkette's Stand-Up Act
Wankette HQ Gay-Rumors Du Jour
Here's What's Bugging Me: Goose and Slider
My Own Micah Wright Style Confession of Dishonesty
Outraged "Conservatives" React to the FMA
An On-Line Impression of Dennis Miller Having Sex with a Kodiak Bear
The Story the Rightwing Media Refuses to Report!
Our Lunch with David "Glengarry Glen Ross" Mamet
The House of Love: Paul Krugman
A Michael Moore Mystery (TM)
The Dowd-O-Matic!
Liberal Consistency and Other Myths
Kepler's Laws of Liberal Media Bias
John Kerry-- The Splunge! Candidate
"Divisive" Politics & "Attacks on Patriotism" (very long)
The Donkey ("The Raven" parody)
News/Chat
Archives
Powered by
Movable Type 2.64