Design Con 2015
Breaking News
Comments
Newest First | Oldest First | Threaded View
Page 1 / 3   >   >>
vrancean
User Rank
Rookie
re: Thermoelectrics could harvest car exhaust heat
vrancean   3/24/2011 5:06:41 PM
NO RATINGS
from ferotec: this type of application was on the TE application list for many many years,

krisi
User Rank
CEO
re: Thermoelectrics could harvest car exhaust heat
krisi   1/21/2011 1:32:54 AM
NO RATINGS
I agree with @new2coding: from thermodynamics point of view re-charging your batteries using waste heat doesn't make any sense, the math just does not work...perhaps small fraction but I highly doubt whether this gadget will ever pay off in a car, show me the money or ROI...Kris

GREAT-Terry
User Rank
CEO
re: Thermoelectrics could harvest car exhaust heat
GREAT-Terry   12/29/2010 9:10:12 AM
NO RATINGS
Interesting! Is there any comparison on the efficiency of those thermal electric generators? I wonder what the efficiency finally means. What we care is how much cost and weight is added in order to get the wanted power. Just for the peltier type device, we can always use matrix of devices to generate as much energy as we want if cost is not a matter.

Lethean
User Rank
Rookie
re: Thermoelectrics could harvest car exhaust heat
Lethean   12/27/2010 5:05:28 PM
NO RATINGS
The act of converting excess heat into electricity consumes that excess heat, so there is a net cooling effect. Putting electricity INTO a TEC just gives you control of the magnitude of the heat differential between sides--heatsinking the hot side in that case gives you a way to more effectively pull heat from the cool side (assuming you can dissipate enough heat on the hot side), but then you use electricity instead of producing it.

Lethean
User Rank
Rookie
re: Thermoelectrics could harvest car exhaust heat
Lethean   12/27/2010 5:00:34 PM
NO RATINGS
Read the article again. They're talking about reducing thermal conductivity (i.e. increasing thermal resistance), not the other way around.

krisi
User Rank
CEO
re: Thermoelectrics could harvest car exhaust heat
krisi   12/23/2010 3:24:08 PM
NO RATINGS
To @p_g: it has been shown that solar cooker is more efficient than photovoltaics...the problem is you need industrial scale installation, so you can't do it at home...I believe Spain has the best installations...Kris

p_g
User Rank
Rookie
re: Thermoelectrics could harvest car exhaust heat
p_g   12/23/2010 12:32:32 PM
NO RATINGS
Another idea could be to harvest solar heat by consolidating it using solar cooker (glass changer with hi CO2) and converting to electricity. Not sure if it will be more efficient than solar energy conversion or may complement it.

Amcfarl
User Rank
Rookie
re: Thermoelectrics could harvest car exhaust heat
Amcfarl   12/23/2010 12:29:49 PM
NO RATINGS
Take a look at Coolchips/Powerchips. These are nanometer gap Peltier-type devices which have been waiting in the wings for years but have a claimed Carnot efficiency of at least 45%, better than this new material, if they can get them to work!

Kinnar
User Rank
CEO
re: Thermoelectrics could harvest car exhaust heat
Kinnar   12/23/2010 7:28:54 AM
NO RATINGS
In fact equally as Solar Energy this source of energy is completely left aside and no one has looked much into it. When we drive car excessive amount of heat gets generated and needs to be radiated out using radiator. Same if the case with Refrigerators and Air-conditioners. If we can convert this heat in some other form of energy too much amount of energy can be saved/earned. When food is being cooked out of 270 deg for heat spread is wasted.

prabhakar_deosthali
User Rank
CEO
re: Thermoelectrics could harvest car exhaust heat
prabhakar_deosthali   12/23/2010 5:57:29 AM
NO RATINGS
I am just wondering whether this technology can be applied to refrigerators. In that case the heat exchanger design will be radically changed and the heat taken out from the fridge compartment could be recycled back to run the fridge itself or may be used to charge the mobile batteries or run some other appliances in the kitchen

Page 1 / 3   >   >>


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

The 10 Commandments of Electronics
Max Maxfield
19 comments
My chum Rick Curl dropped into my office this morning. We had both decided that we desperately needed some face-to-face time to talk about the current Doctor Who (our feelings are mixed at ...

Martin Rowe

No 2014 Punkin Chunkin, What Will You Do?
Martin Rowe
Post a comment
American Thanksgiving is next week, and while some people watch (American) football all day, the real competition on TV has become Punkin Chunkin. But there will be no Punkin Chunkin on TV ...

Rich Quinnell

Making the Grade in Industrial Design
Rich Quinnell
13 comments
As every developer knows, there are the paper specifications for a product design, and then there are the real requirements. The paper specs are dry, bland, and rigidly numeric, making ...

Martin Rowe

Book Review: Controlling Radiated Emissions by Design
Martin Rowe
1 Comment
Controlling Radiated Emissions by Design, Third Edition, by Michel Mardiguian. Contributions by Donald L. Sweeney and Roger Swanberg. List price: $89.99 (e-book), $119 (hardcover).