+- +-

+-User

Welcome, Guest.
Please login or register.
 
 
 
Forgot your password?

+-Stats ezBlock

Members
Total Members: 46
Latest: Tony Ryan
New This Month: 0
New This Week: 0
New Today: 0
Stats
Total Posts: 12595
Total Topics: 255
Most Online Today: 3
Most Online Ever: 137
(April 21, 2019, 04:54:01 am)
Users Online
Members: 0
Guests: 3
Total: 3

Author Topic: Solar Ovens  (Read 199 times)

0 Members and 0 Guests are viewing this topic.

AGelbert

  • Administrator
  • Hero Member
  • *****
  • Posts: 26396
  • Location: Colchester, Vermont
    • Renwable Revolution
Solar Ovens
« on: June 09, 2014, 04:13:33 pm »
New Solar Oven Could Help Save the World's Forests

Researchers have developed an oven that can cook with the sun's heat, even after dark 
.

Unless you self-identify with certain counterculture groups, chances are pretty good that you've never used a solar cooker.

While they are decidedly niche items in the U.S., solar cookers are a necessity for those in the developing world. Affordable and surprisingly low-tech, these ovens use a combination of mirrors and clever insulation to harness the raw power of the sun.

The advantages of solar powered ovens are many. The devices are easy to make, offer fuel-free cooking, have little to no environmental impact, and help to limit deforestation. Of course, the technology is not without its shortcomings.

As you might expect, solar cookers are useless on cloudy days, and cooking in the evening is all but impossible. Also, even at high noon on the equator, the best solar ovens in use today max out at around 300°F. While that's more than enough to cook most dishes—given enough time, anyway—certain region-specific staples like Ethiopian injera bread require temperatures as high as 400°F.

But researchers at the Norwegian University of Science and Technology believe they've struck upon a new technique to address these shortcomings. They've developed a solar oven that is not only able to reach temperatures as high as 482°F, but is also able to store that heat over a 24 hour period.

The solar oven captures the sun's heat in a mixture of salts, including fluoride, chloride, and nitrate. This salt mixture acts as a solar battery, storing and discharging the heat over time.

With only 3% of its landmass covered in forest—down from as much as 40% in the 1960s—Ethiopia is in dire need of fuel-free cooking alternatives. While this particular cooker is still in the research and development stage, its Ethiopian-born inventor, Asfafaw Tesfay, hopes to make the oven available to schools, universities, bakeries, and restaurants in the region.   


http://ovens.reviewed.com/news/new-solar-oven-could-help-save-the-worlds-forests
El viento sopla de donde quiere, y oyes su sonido; mas ni sabes de dónde viene, ni a dónde va;
así es todo aquel que es nacido del Espíritu. Juan 2:8

 

+-Recent Topics

Creeping Police State by AGelbert
July 18, 2019, 09:51:02 pm

Mechanisms of Prejudice: Hidden and Not Hidden by AGelbert
July 18, 2019, 09:26:47 pm

Doomstead Diner Daily by Surly1
July 18, 2019, 07:08:18 am

Corruption in Government by AGelbert
July 17, 2019, 11:34:47 pm

Profiles in Courage by AGelbert
July 17, 2019, 11:26:08 pm

FREUD THE FRAUD by AGelbert
July 17, 2019, 07:24:40 pm

The Big Picture of Renewable Energy Growth by AGelbert
July 17, 2019, 06:45:56 pm

Global Warming is WITH US by AGelbert
July 17, 2019, 06:11:42 pm

Fossil Fuel Subsidies - The Invisible Ones are Worse Than the Obvious Ones! by AGelbert
July 17, 2019, 04:19:34 pm

🦕🦖 Hydrocarbon 🐍 Hellspawn Mens Rea Actus Reus modus operandi by AGelbert
July 15, 2019, 11:49:27 pm