Can Fuel Cell Technology Enhance Energy Efficiency in Automobiles?

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SUMMARY

Fuel cell technology, particularly units that extract oxygen and hydrogen from water, has been discussed as a potential method to enhance energy efficiency in automobiles. While some proponents claim these systems can achieve efficiencies exceeding 70%, skepticism remains regarding their practical application and effectiveness in improving fuel economy. Current hybrid vehicles utilize electric motors to optimize energy use during acceleration, a phase where traditional combustion engines are least efficient. Integrating fuel cells into hybrids has not been implemented, as it does not significantly alter energy consumption patterns.

PREREQUISITES
  • Understanding of fuel cell technology and its components
  • Knowledge of hybrid vehicle systems and energy management
  • Familiarity with energy efficiency metrics and calculations
  • Awareness of common scams in alternative energy solutions
NEXT STEPS
  • Research the efficiency claims of dry cell fuel cells available on platforms like eBay
  • Investigate the integration of fuel cells in hybrid vehicles and their potential benefits
  • Explore the physics of energy input and output in fuel cell systems
  • Examine case studies of fuel cell technology in automotive applications
USEFUL FOR

Automotive engineers, energy efficiency researchers, and enthusiasts interested in alternative fuel technologies and their impact on vehicle performance.

mtworkowski@o
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I've heard about the units that run on DC and extract O and H from water. The gases are then used on automobles to increase fuel mileage. I'd like to hear the thoughts on energe in and energy out. Also, as hybrids store energy for a finite number of power demands, can these fuel cells do a better job of storing energy and releasing it later?
Thanks
Alex
 
Engineering news on Phys.org
According to physics these will not work. But a lot of people out there will swear they do work to improve fuel economy... If you want to experiment with one of these, I'd recommend using a 'dry cell' sold on Ebay. Supposedly these units are reaching efficiencies of 70+ percent. Avoid scam sites such as water4gas, etc.
 
Last edited:
It's been discussed in many threads, including this one: https://www.physicsforums.com/showthread.php?t=251887&page=7

Do a search for more. Please note, however, that we have a very tight leash on discussions where crackpot claims might enter in.

Regarding the question of using this for a hybrid, that isn't currently being done, but it could be. But it would not help the efficiency of the car much because it doesn't change how the energy is used. Hybrid cars use electric motors to take much of the load when cars are accelerating, while a hydrogen-based car would still be using combustion in the engine. Acceleration is where the efficiency of an internal combustion powered car is by far at its worst.
 

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