Win a copy of Landrace Gardening this week in the Seeds and Breeding forum!
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
permaculture forums growies critters building homesteading energy monies kitchen purity ungarbage community wilderness fiber arts art permaculture artisans regional education skip experiences global resources cider press projects digital market permies.com pie forums private forums all forums
this forum made possible by our volunteer staff, including ...
master stewards:
  • Anne Miller
  • Nicole Alderman
  • Pearl Sutton
  • r ranson
stewards:
  • paul wheaton
  • Mike Haasl
  • Burra Maluca
master gardeners:
  • Greg Martin
  • jordan barton
  • Carla Burke
  • Leigh Tate
gardeners:
  • Jay Angler
  • John F Dean
  • Steve Thorn

energy from differences in ambient temperature

 
Posts: 198
Location: 54 North BC Canada
35
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator

This might be an interesting development to watch....to see if it can be scaled up.....

http://www.ecosnippets.com/alternative-energy/mit-scientists-device-generates-electricity-from-air/

Not exactly from air, but using differences in ambient temperatures......
 
pollinator
Posts: 596
Location: Southern Arizona. Zone 8b
75
fish bike bee solar woodworking greening the desert
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
I'd be nice if they occasionally posted relevant facts with these kinds of articles.  How big is "relatively small"?  How much power does the device shown in the pictures produce?
I just googled for more articles and none of them answered those questions.

I know that if the difference in temperature is relatively small, the the power output will also be very small.

However, this did give me an idea that might work.  Since I have solar panels and a few thousand gallons of stored rainwater, it has occurred to me that using the water to cool the panels could increase production.  However, when I've ran the numbers the power required to drive the pumps is typically more than the increase in output from the solar panels.  If, however, I was to use thermal couples between the panels and the water cooled heat exchangers, then the thermal-couples might produce enough power to run the pumps (maybe), then again, the cost of all those thermal-couples(and pumps and pipes, and heat exchangers, etc.)  is probably higher than the cost of buying more solar panels.
 
R Jay
Posts: 198
Location: 54 North BC Canada
35
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator

About halfway down the article:

"A sample of the material made to test the concept showed that, simply in response to a 10-degree-Celsius temperature
difference between night and day, the tiny sample of material produced 350 millivolts of potential and 1.3 milliwatts of
power — enough to power simple, small environmental sensors or communications systems."

It will be interesting to see if anything develops from this application.
 
Peter VanDerWal
pollinator
Posts: 596
Location: Southern Arizona. Zone 8b
75
fish bike bee solar woodworking greening the desert
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator

R Jay wrote:
About halfway down the article:

"A sample of the material made to test the concept showed that, simply in response to a 10-degree-Celsius temperature
difference between night and day, the tiny sample of material produced 350 millivolts of potential and 1.3 milliwatts of
power — enough to power simple, small environmental sensors or communications systems."

It will be interesting to see if anything develops from this application.



Exactly my point!

How big is "tiny"?  A thimble?  A deck of cards?  A shoebox?
 
R Jay
Posts: 198
Location: 54 North BC Canada
35
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator

I'll be the first to admit the picture in the article {side view} makes it hard to estimate.

Found this one...gives a rough...but better...idea

from:  https://newatlas.com/mit-thermal-resonator-temperature-changes-electricity/53456/

thermal-resonator-1.jpg
[Thumbnail for thermal-resonator-1.jpg]
 
Peter VanDerWal
pollinator
Posts: 596
Location: Southern Arizona. Zone 8b
75
fish bike bee solar woodworking greening the desert
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Unless they left the solar cell connected, the weather station shown requires more than 1.3 milliwatts.  Since the label on the photo states that the unit shown is powering the weather station, it makes it unclear if the unit shown is the one described.

If the unit shown in the photos is the 'tiny' unit described in the text, then it doesn't seem like a very viable technology.

For long term power output, existing technology such as Betavoltaic, Radioisotope thermoelectric generator, etc. can produce power for decades (possibly centuries) in a much smaller package.
 
R Jay
Posts: 198
Location: 54 North BC Canada
35
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Back in 1890, a book was published on how to run and maintain the large locomotive tractors used in farming.

In the book,it claimed small diesel internal combustion engines will never develop the power need for many applications, so the author
claimed the internal combustion engine will never amount to anything.

It is always hard to predict the future....especially electronics....video disc players and Betamax video players......

As far as size goes....
first_transistor.jpg
[Thumbnail for first_transistor.jpg]
 
WHAT is your favorite color? Blue, no yellow, ahhhhhhh! Tiny ad:
Solar Station Construction Plans - now FREE for a while
https://permies.com/t/138039/Solar-Station-Construction-Plans
reply
    Bookmark Topic Watch Topic
  • New Topic