• Hi Guest! Forum rules have been updated. All users please read here.

This hydrogen-powered supercar can drive 1,000 miles on a single tank

Iron Felix

CLEARANCE: Secret
Joined
Jun 30, 2019
Messages
246
Reaction score
523
I posted a proposal by the Russian inventor Yurkevich in 1917. He proposed a hydrogen and oxygen engine with which "you could cover 26,000 kilometers with one kilogram of fuel." It turns out that his project was not an absolute fantasy.
 

Fluff

CLEARANCE: Secret
Joined
Sep 9, 2019
Messages
316
Reaction score
145
Their maths doesnt really add up. I kg of hydrogen is 40kw/h of power, probably less when its actually converted. To make 1KG takes 55KW/h, so your taking 55KW/h and producing 30-35...Thats not very efficient.

40kw/h isnt going to move that car 1000 miles, unless its made from paper, and travels at 20mph....

Cars, really looking like batteries, currently li-ion. Trucks, maybe hydrogen, maybe solid state batteries, and supercapacitors....
 

TomS

CLEARANCE: Top Secret
Senior Member
Joined
Apr 16, 2008
Messages
4,065
Reaction score
1,055
Their maths doesnt really add up. I kg of hydrogen is 40kw/h of power, probably less when its actually converted. To make 1KG takes 55KW/h, so your taking 55KW/h and producing 30-35...Thats not very efficient.

40kw/h isnt going to move that car 1000 miles, unless its made from paper, and travels at 20mph....

Cars, really looking like batteries, currently li-ion. Trucks, maybe hydrogen, maybe solid state batteries, and supercapacitors....
I feel like you skipped a bit in the math. We don't know how much hydrogen they have on board or what the consumption rate is.

We do know the car is fairly light, just a hair over one metric ton. And it has more onboard hydrogen than the Mirai, so more than 5 kilograms; probably a lot more. Plus a small battery for leveling and regen braking recovery. The quoted range is for mixed city and highway driving. There's really no way of knowing whether the math adds up without a bunch more variables filled in.
 

Fluff

CLEARANCE: Secret
Joined
Sep 9, 2019
Messages
316
Reaction score
145
I may have taken one tank, as 1kg, but even so, the conversion rate is lousy, you lose on every conversion, and your converting twice. Madness I say, it will never catch on!!
 

Hobbes

CLEARANCE: Top Secret
Senior Member
Joined
May 9, 2008
Messages
829
Reaction score
193
Low-rate research into hydrogen as a vehicle has been going on for 40 years now: in the 1980s Mercedes showed hydrogen-powered cars already.

The big disadvantage of hydrogen is the conversion efficiency, which is lower than that of a battery system (and this is a fundamental limit, not something that can be solved by development). It may still take off if we get to a situation where we have abundant renewable energy sources - hydrogen would be a way to store excess generated energy.
 

EwenS

CLEARANCE: Confidential
Joined
Feb 20, 2010
Messages
99
Reaction score
156
It does however have the advantage that, unlike batteries, you will be able to stop at a filling station, once the infrastructure is built, and top up in no time flat just like filling your tank with petrol.

They have yet to build a car battery that will allow me to make my 280 mile journey to see family, with a stop of less than 20 mins, and at motorway speeds at all times of the year.

There is apparently a hydrogen trial running in the UK. Some journo wrote about the experience a year or two back, driving from John O' Groats to London with only a couple of fill ups.
 

edwest

CLEARANCE: Top Secret
Senior Member
Joined
Nov 9, 2007
Messages
1,052
Reaction score
231
The Tesla company can already produce a "million mile battery." More electric vehicle start-ups have been announced. Elon Musk will reveal more on Battery Day, September 22.

 
Top