Breaking News
Comments
Newest First | Oldest First | Threaded View
MeirG
User Rank
Rookie
re: Piezoelectric scheme seeks to reap the wind while driving
MeirG   2/10/2010 8:31:50 PM
NO RATINGS
Of course you need to burn gas to produce electrical energy. And that's also how electricity produced by a rotating generator is "harvested". No one yet did anything to circumvent Newton's law. So the question is one of overall efficiency. Which one's is higher, a Piezoelectric device or a rotating generator's. Also which is smaller, less expensive to manufacture, more reliable and less expensive to maintain.

N2Hmm
User Rank
Rookie
re: Piezoelectric scheme seeks to reap the wind while driving
N2Hmm   12/3/2009 3:00:12 AM
NO RATINGS
Gulton and Piezo Electric products tried doing something like this 20+ years ago. The problem was the ceramic material would fracture over time with the flexing of the material. You need a polarized material that is not as rigid.

pfiekowsky
User Rank
Rookie
re: Piezoelectric scheme seeks to reap the wind while driving
pfiekowsky   12/3/2009 12:19:41 AM
NO RATINGS
According to the article, and previous work, the energy is more-than free. You actually burn less gasoline. How does it conserve energy? Reduced heating of the wake and the airfoil skin. It reduces turbulence by absorbing the vibration energy on the skin. 30 years ago they talked about similar energy absorbing skins that allowed some fish and some submarines to go faster than a hard skin would allow. Very cool.

chandan_e
User Rank
Rookie
re: Piezoelectric scheme seeks to reap the wind while driving
chandan_e   12/2/2009 7:36:44 PM
NO RATINGS
The energy from this scheme is not free. It ultimately comes from the gasoline that powers the vehicle. If it produces 200 watts, you have to burn that much more gasoline.

Les Slater
User Rank
Rookie
re: Piezoelectric scheme seeks to reap the wind while driving
Les Slater   12/2/2009 4:47:31 PM
NO RATINGS
Neat, producing electrical power while reducing drag, a double win. Environmental power harvesting has great future potential.

teix
User Rank
Rookie
re: Piezoelectric scheme seeks to reap the wind while driving
teix   12/2/2009 3:30:01 PM
NO RATINGS
When we get 200W per square meter this energy is not result from an increase of energy consumption of the vehicle in the same amount?



Most Recent Comments
EE Life
Frankenstein's Fix, Teardowns, Sideshows, Design Contests, Reader Content & More
Max Maxfield

Steve Wozniak Reacts to Latest iPhone
Max Maxfield
4 comments
Funnily enough, just a few days ago as I pen these words, I was chatting with my wife (Gina the Gorgeous) when she informed me that -- as a kid -- she had never played at making a ...

EDN Staff

11 Summer Vacation Spots for Engineers
EDN Staff
20 comments
This collection of places from technology history, museums, and modern marvels is a roadmap for an engineering adventure that will take you around the world. Here are just a few spots ...

Glen Chenier

Engineers Solve Analog/Digital Problem, Invent Creative Expletives
Glen Chenier
15 comments
- An analog engineer and a digital engineer join forces, use their respective skills, and pull a few bunnies out of a hat to troubleshoot a system with which they are completely ...

Larry Desjardin

Engineers Should Study Finance: 5 Reasons Why
Larry Desjardin
46 comments
I'm a big proponent of engineers learning financial basics. Why? Because engineers are making decisions all the time, in multiple ways. Having a good financial understanding guides these ...

Flash Poll
Top Comments of the Week
Like Us on Facebook
EE Times on Twitter
EE Times Twitter Feed

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)