Is it possible to recycle vehicle emissions in order to generate elect

[jeremybigideas]

I’ve been doing some research and thinking recently into how vehicle emissions might be used to generate electricity in order to power the vehicle itself. I’ve seen a few products and research projects centred on this topic, although they all seem to be focused on converting the heat in the exhaust into potential energy.

Would it be possible to use a vehicle’s emissions and force them through piping with large numbers of small generators, effectively creating a wind-farm within your own car. I respect it would take thousands if not millions of tiny wind turbines to complete this, but I’d really appreciate some help with regards to the equations and formulas of wind to potential energy conversion.

Could such a system be suspended using a helium balloon to lessen the weight exerted on the car?

If you had enough turbines could you simply use a very small amount of wind (vehicle emissions) in order to the supply the system?

Many thanks,
Jeremy.

 

[SteamKing]

You might generate enough electricity to light a small bulb or two, but using thousands or millions of tiny wind turbines would not be very efficient. There is only so much energy in a car's exhaust stream, and dividing it up into smaller and smaller parcels does not create more energy, only less. That's why cars with turbochargers have one or two turbos: anything more complicated is more expensive to produce and less reliable in service.

Driving around with helium balloons suspended over your car is also problematic: how to be sure the balloon would not be ripped away going into a tunnel or under a bridge? Plus, you have to provide the car with extra power to overcome dragging a balloon around everywhere.

 

[mfb]

The maximal energy you can get in that way is the kinetic energy of the exhaust, and that is tiny. Increasing the number of turbines does not help.
In addition, adding turbines would increase the necessary pressure in the exhaust line - and therefore the motor would need more power to push it out. I guess adding turbines would actually reduce the efficiency.

Could such a system be suspended using a helium balloon to lessen the weight exerted on the car?

Adding a helium balloon with any notable effect in terms of weight increases air drag so much that you cannot use it as a car any more. If you make it big enough, you get a Zeppelin ;).

If you had enough turbines could you simply use a very small amount of wind (vehicle emissions) in order to the supply the system?

No.

 

[Vanadium 50]

If you want a non-negligible amount of power extracted, this will serve to restrict the tailpipe. This will, in turn require the engine to work harder, so you end up using more energy than you extract.

 

[pmacias]

I can say that the concept of using vehicle emissions to generate electricity is an interesting idea. However, there are several factors that need to be considered before such a system can be implemented.

Firstly, the amount of electricity that can be generated from vehicle emissions is quite small compared to the overall energy needs of a vehicle. The heat energy in the exhaust is not enough to power the vehicle itself, let alone generate excess electricity. Therefore, it may not be practical to solely rely on vehicle emissions for electricity generation.

Secondly, the process of converting heat energy into electricity is not very efficient. The energy losses in such a system would likely outweigh the benefits of generating electricity from vehicle emissions.

Additionally, the idea of using a wind-farm-like system within a car raises concerns about safety and practicality. The added weight and complexity of such a system may not be feasible for everyday use of a vehicle.

Furthermore, using a helium balloon to suspend the system may not be a viable solution as it would require additional energy to lift the system, further reducing its efficiency.

In terms of equations and formulas for wind to potential energy conversion, the principles of wind energy conversion are well understood and can be applied to this concept. However, the specific calculations and designs would depend on various factors such as the size and speed of the wind turbines, the amount of wind (vehicle emissions) available, and the efficiency of the system.

In conclusion, while the idea of using vehicle emissions to generate electricity is intriguing, there are several technical challenges and limitations that need to be addressed before it can become a practical solution. More research and development would be needed to determine the feasibility and effectiveness of such a system.