Has anybody dimensions of the flybrid F1 KERS that are more dtailing than "fit into a DIN A4 paper"?
Some rough dimensions or drawings. Din't find anything usefull on google.
Greetings,
Jan
Flywheel KERS for F1 is now induction charged and not flybrid.Jan_83 wrote:Has anybody dimensions of the flybrid F1 KERS that are more dtailing than "fit into a DIN A4 paper"?
Some rough dimensions or drawings. Din't find anything usefull on google.
Greetings,
Jan
You may be right Caito, although IMO capacitors and batteries will get closer in weight and will be used in combination.Caito wrote:I think in a couple years we'll probably see supercapacitor kers, rather than batteries. They can charge really fast, discharge fast too. Just don't meet weight criteria at the moment.
http://www.f1fanatic.co.uk/2012/03/01/w ... -mans-car/Williams to supply hybrid system for Audi Le Mans car
Le Mans 24 Hours
Williams Hybrid Power will build part of Audi’s new Le Mans car, the team has confirmed.
WHP will produce the hybrid system energy storage supplier for the Audi R18 e-tron quattro.
The company has produced an ultra-lightweight electric flywheel and electronics system for the car, which was revealed yesterday. The flywheel spins at up to 45,000rpm and produces 150kW of power.
The Audi R18 e-tron quattro will make its race debut in the six hours of Spa on May 5th, a round of the new World Endurance Championship, prior to the Le Mans 24 Hours.
A statement released by WHP said: “The defining features of WHP’s flywheel made it the prime energy storage candidate for Audi’s project when compared to other technologies such as batteries, ultra-capacitors or mechanical flywheels.
“The main benefits of the WHP system are a high power density and correspondingly low mass, high efficiency energy transfer to and from the e-storage, the ability to continuously deep power cycle and an insusceptibility to performance or life degradation over a wide range of operating temperatures. In short, the technology is perfectly suited to the high performance demands of endurance racing.”
I'm guessing this is by weight and not by volume?Edis wrote:...a flywheel actually has the potential to exceed the energy density of gasoline.
It's by weight yes. Flywheels store energy by kinetic energy, meaning it will follow mv^2/2. For instance, one kg having a velocity of 10000 m/s will store 50 MJ. Of course, centrifugal forces will limit the velocity one could practically use. By simply dividing the tensile strength with the density of the flywheel material we'll get the maximum energy density of a flywheel. For instance, a steel flywheel capable of 2000 MPa with a density of 7800 kg/m3 will provide a maximum energy density of 0.26 MJ/kg (70 Wh/kg). Carbon fibre having a strength of 6000 MPa and a density of 1400 kg/m3 will offer 4.3 MJ/kg (1200 Wh/kg) and carbon nanotubes with a strength of 60000 MPa and a density of 1300 kg/m3 will offer an energy density of 46 MJ/kg (12.8 kWh/kg), thus surpassing gasoline in terms of energy density.joseff wrote:I'm guessing this is by weight and not by volume?Edis wrote:...a flywheel actually has the potential to exceed the energy density of gasoline.
Link please?
I guess that is where Patrick wants it to go.Edis wrote:It's by weight yes. Flywheels store energy by kinetic energy, meaning it will follow mv^2/2. For instance, one kg having a velocity of 10000 m/s will store 50 MJ. Of course, centrifugal forces will limit the velocity one could practically use. By simply dividing the tensile strength with the density of the flywheel material we'll get the maximum energy density of a flywheel. For instance, a steel flywheel capable of 2000 MPa with a density of 7800 kg/m3 will provide a maximum energy density of 0.26 MJ/kg (70 Wh/kg). Carbon fibre having a strength of 6000 MPa and a density of 1400 kg/m3 will offer 4.3 MJ/kg (1200 Wh/kg) and carbon nanotubes with a strength of 60000 MPa and a density of 1300 kg/m3 will offer an energy density of 46 MJ/kg (12.8 kWh/kg), thus surpassing gasoline in terms of energy density.joseff wrote:I'm guessing this is by weight and not by volume?Edis wrote:...a flywheel actually has the potential to exceed the energy density of gasoline.
Link please?