FUEL CELL EBIKE, WILL USE $2 HYDRIDE CANS

C

cycleops612

10 kW
Joined
May 31, 2015
Messages
585
Location
Sydney Australia, Me: 70kg/154lb. 350w, 22kg ex ba
I did try & ensure this isnt a repeat.

"Battery: 518 Wh Lithium-ion battery that is continuously recharged by the fuel cell and hydrogen canister. The battery itself can be recharged in six hours on mains power.

Fuel cell power: 100W (FOR 7+ HOURS NB)

Canister: 738 Wh capacity. It can be exchanged for a new canister in 30 seconds.
"


http://newsroom.unsw.edu.au/news/science-technology/australia%E2%80%99s-first-fuel-cell-bicycle

at the risk of stating the obvious, 100w for 7+ hours is a damn good extender - its in theory = to a 20ah 36v battery in capacity, instant recharge but lousy discharge rate.

they dont state the weight of the fuel cell. i imagine its a sore point, but hey, it fits on a bike, right?

and the battery is spared from draining anytime use is below 100w, and it gains 100 wh~ each, bike idle/parked hour.

so a common 10ah 36v 360wh battery could be flattened getting to work (and have 100w more squirt for the trip), and after 3.5 hours, be independently recharged for the home trip, and be refueled with a cheap, convenient, non pressurised canister.

the latter is the real possible game changer-no infrastructure required for wide adoption.
 
Err that articles from 2014

Fundamentally flawed concept. I need electricity to make hydrogen to make electricity..... why?

It's more efficient to store and use electricity directly. The way I could see this becoming a 'thing' is either hydrogen doesnt require production on mass (no) or is funded by someone with a vested interest....

Why not just develop charge station networks based on solar? Simple, uses existing technology...
 
Lurkin said:
Err that articles from 2014

Fundamentally flawed concept. I need electricity to make hydrogen to make electricity..... why?

TO STORE IT, same as you do with chemicals in batteries. To have a mobile power source.

It's more efficient to store and use electricity directly. The way I could see this becoming a 'thing' is either hydrogen doesnt require production on mass (no) or is funded by someone with a vested interest....

Why not just develop charge station networks based on solar? Simple, uses existing technology...
Click to expand...

my bad, a friend sent it & assumed was new

i cant agree with YOUR logic at all

how exactly do current batteries store energy "directly" for goodness sake?

fuel cell is just another form of battery/storage
range for one is a niche. forklifts in food warehouses find the cost benefit works, w/o subsidies.

batteries have serious problems of their own. weight gets out of hand fast if you want much more than a 1 way commute in an ecar.

I think fuel cell suits a lotta folk.

go somewhere. park. do something. go someplace else. park. do something...

we may use our vehicles over the space of a day, a lot of times and total some miles up, but we cant just drive all day, we have to earn a living too. There will be breaks in driving.

a pretty wimpy fuel cell and battery could make for a very versatile EV.

a 125km ebike is noteworthy? 100w is an interesting #. i recall reading of tests on a roadbike that showed 100 w sustained 25kph (or miles?) on the flat in still air. Each extra 100w increased this number by only 5. so the bare essentials of locomotion could almost be covered by this cell alone on a bike.


To say it all depends on costs, benefits, .. would be logically correct, but not this stuff.

Nuclear; unlimited, unmetered, clean power would alter all the equations a lot, if progress were not so distracted by politics.

nothing further. i wonder what became of it, the hydrides thing sure sounded good. checking it will have to wait.
 
The cells I've worked with for the last 4years are >99.9% charge efficiency.

H2 to make and compress it wastes something like 35% of the input energy best case, then to cycle it through a fuel cell again, it wastes another ~20-25%.

Seems a bit ICE-mentality to waste half your transportation energy just in dealing with storing energy.
 
You must log in or register to reply here.
Back
Top