Search...
Home Subscribe
Pie
Home Subscribe
Recent topics Flagged topics Hot topics Best topics
Search...
Search within solar Search permies
Advanced search Google search
Register / Login
rocket mass heater dvd
  • 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
permaculture bootcamp sketch of boots homesteading and permaculture singles Free heat movie Show off your website here benefits of pie
this forum made possible by our volunteer staff, including ...
master stewards:
  • Carla Burke
  • Nancy Reading
  • John F Dean
  • r ransom
  • Jay Angler
  • Timothy Norton
stewards:
  • paul wheaton
  • Pearl Sutton
  • Tereza Okava
master gardeners:
  • Christopher Weeks
  • M Ljin
gardeners:
  • thomas rubino
  • Jeremy VanGelder
  • Megan Palmer

Passive refrigerator--in Nature and in MIT News

 
Joshua Myrvaagnes
pollinator
Posts: 2238
Location: Massachusetts, 5a, flat 4 acres; 40" year-round fairly even
309
6
I like...
kids purity trees urban writing
posted 7 years ago
  • Likes 2
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
    Send
  • Quote
  • Report post to moderator
Mind blown.  Cooling by as much as 40C below ambient temperature in dry climates.  Allows emission in infrared rays.

Thoughts?
IMG_20190305_225233839.jpg
[Thumbnail for IMG_20190305_225233839.jpg]

Community Building 2.0: ask me about drL, the rotational-mob-grazing format for human interactions.

 
frank li
Posts: 600
Location: Michigan
40
posted 7 years ago
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
    Send
  • Quote
  • Report post to moderator
A heat transducer....?  I have no idea what to call it, but its cool that it can exploit lowering resistance to heat loss by selective radiation. A reverse selective absorber like solar thermal absorbers.

Always cool when a materials arrangement can do work without moving parts. High technology if it is practical and works.
 
C. Letellier
pollinator
Posts: 1162
Location: Greybull WY north central WY zone 4 bordering on 3
353
I like...
hugelkultur trees solar woodworking composting homestead
posted 6 years ago
  • Likes 1
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
    Send
  • Quote
  • Report post to moderator
link to article

Country oriented nerd with primary interests in alternate energy in particular solar. Dabble in gardening, trees, cob, soil building and a host of others.

 
You pay for a gym membership and then you pay a tiny ad to chop your wood?
Learn Permaculture through a little hard work
https://wheaton-labs.com/bootcamp
reply
reply
    Bookmark Topic Watch Topic
  • New Topic
Boost this thread!
Similar Threads
More...