Go Back   EcoModder Forum > EcoModding > DIY / How-to
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 12-06-2018, 05:09 PM   #11 (permalink)
Duck duck duck
 
RedDevil's Avatar
 
Join Date: Dec 2012
Location: Nieuwegein, the Netherlands
Posts: 3,320

Red Devil - '11 Honda Insight Elegance
Team Honda
90 day: 57.54 mpg (US)

It - '09 Hyundai I10 Active Cool
Team Hyundai
90 day: 29.19 mpg (US)
Thanks: 1,232
Thanked 1,654 Times in 1,080 Posts
I believe I read somewhere the air speed close to the radiator is 1/6th of the velocity of the vehicle. Which, if true, means that the energy that could be derived of that fan is 1/6^3 of what it could have been in full wind.
Which is as close to nothing as anything; it would be a real challenge to harvest more than a few milliWatt out of that.

One could stick a row of TEGs to the radiator with a copper strip on the back and harvest a few Watt from the Seebeck effect. That in comparison would be way less uneffective.

I've been thinking about a micro turbine on the air intake to harvest energy from the vacuum draw on partial load, only to find no suitable turbines and generators for such a tiny draw exist. There's a potential of several hundred Watt there, but even that proved to be elusive.

I wish I could have given off a happier signal.

__________________
2011 Honda Insight + HID, LEDs, tiny PV panel, extra brake pad return springs, neutral wheel alignment, 44/42 PSI (air), PHEV light (inop), tightened wheel nut.
lifetime FE over 0.14 Gm or 0.09 MM.

  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 12-08-2018, 10:36 AM   #12 (permalink)
Master EcoModder
 
teoman's Avatar
 
Join Date: Jan 2017
Location: Istanbul
Posts: 910
Thanks: 48
Thanked 121 Times in 102 Posts
Interesting idea. On a gasoline powered engine, some of the restriction of the throttle body can be performed by the fan generator.
  Reply With Quote
Old 12-08-2018, 02:42 PM   #13 (permalink)
Master EcoModder
 
freebeard's Avatar
 
Join Date: Aug 2012
Location: northwest of normal
Posts: 12,772
Thanks: 3,092
Thanked 4,159 Times in 3,303 Posts
Quote:
I believe I read somewhere the air speed close to the radiator is 1/6th of the velocity of the vehicle. Which, if true, means that....
I can't confirm that, but it's been said that the opening of a properly ducted shroud should be 1/6th the area of the radiator itself.

One could perform a test with an electric fan, but before or after the radiator it would be like trying to breath with a pillow on your face.

__________________
.
“Geniuses are just people who had good mothers.”
― Buckminster Fuller
"Momma tried"
― Merle Haggard
_________________
  Reply With Quote
Reply  Post New Thread


Thread Tools




Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com