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Sunday, May 20, 2012

parabolic solar cooker construction photos from Pakistan science club

parabolic solar cooker construction photos





aluminium foil in squire shape






aluminium foil 
aluminium foil cutting


aluminium foil cutting in rounded shape 


student cutting aluminium foil in rounded shape


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one side  of foil










aluminium foil  cutting in conical shape


aluminium foil  placing on dish


school students working with project, aluminium foil  placing on dish


school students working with project


school girls working on project


parabolic solar cooker construction


aluminium foil on  parabolic solar cooker


  parabolic solar cooker


  students placing new foil on parabolic dish


students placing new foil on parabolic dish


students cutting  aluminium foil  in round shaped


students pasting aluminium foil


students pasting aluminium foil 


students pasting glue on aluminium foil  


aluminium foil


setting the direction to sun 


concentrated sun light


adding water in pot


now cooker in actin


water starts boiling

Wednesday, March 14, 2012

Construction Instruction Solar Cooker

The name is "Eco solar cooker."

That is made of corrugated cardboard with aluminum foil.
Eco solar cooker is cooking utensil by solar power.
It concentrates sunlight and heat food only by solar power!
3 points of Eco Solar cooker:
・21seconds!(Construct the Eco solar cooker)
・No fire to cook! (Heat from sunlight from Solar power)
・Short cooking time!(E.p.rice 180cc takes only 35 mins.)
If you are interested in this product, I'd like to show you more details.
Please don't hesitate to contact us!

- - -Contact - - -

ASEAN DEPT,.
Development Section
SHIGEMITSU SHOJI CO.,LTD

http://www.shigemitsu-shoji.co.jp/
kaba@shigemitsu-shoji.co.jp
TEL: 81-76-238-8111

Sunday, June 5, 2011

Fresnel lens solar cooker using TV lens

Fresnel lens solar cooker using TV lens


Solar cooking using my fresnel lens solar cooker made using a 2'x4' fresnel lens from a rear projection TV. I show it cook minced pork, burn a leaf within seconds and how to find the focal length

Solar Powered Insinkerato

Experimenting with a Solar Powered Insinkerator at 14,000 feet in Nepal



On our second Blackstone Ranch/National Geographic Explorers Innovation Challenge Grant we brought an Evolution 200 Insinkerator (courtesy of Emerson Electronics) to the village of Dingboche (4400 meters) in the Himalayas of Nepal, en route to Mt. Everest. There, on the roof of the Khumbu Alpine Conservation Center, with team leader Dr. Alton Byers of the Mountain Institute, Carolyn Howe of India's Loop Environmental Solutions, and Debbie Marchinkowsky of the GAVI campaign, we installed 400 Watts of Photovoltaic power and two Chinook 200 Watt wind generators along with a vacuum tube solar hot water system. We brought the Insinkerator (and the kitchen sink!) to test running it on the solar electric system, using the solar hot water to heat ground up food waste from the trekking lodges for use, with a heat providing traditional Nepalise composting toilet, with a biogas digestor. The plan is a good one for alpine regions where the trekking industry has provided a wealth of food waste that can be turned into clean, affordable, climate friendly cooking fuel. Yaks traditionally ate the food waste, but the explosion of tourism and the decline of yak herding have created a situation where there is now more food waste than the ecosystem can absorb. At the same time, increased demand for cooking fuel for the lodges has created a situation where the soil binding juniper shrub ecosystem is being degraded and the only alternatives are expensive and hard to transport fossil fuels (kerosene and bottled gas). The insinkerator/food-waste-biodigestor/composting toilet combination gives an alternative to all of these problems. The only problem is that the insinkerator we brought kept overloading both the 1000 watt inverter we brought and a neighboring lodges 1500 inverter. The amperage draw and a possible bad overload circuit breaker caused a resistor in the Insinkerator circuit board to burn out and also burned two capacitors and a relay in the inverter. The lesson learned is to use bigger inverters (a 2000 watt inverter should be sufficient) and to always bring spare parts and circuit boards for servicing and repairing insinkerators in the field. Since Solar CITIES now installs insinkerators with our biodigestors in remote parts of the world, building capacity in Insinkerator repair and in basic electronics and mechanics is a critical piece of sustainable development, and one that we are pursuing.

Monday, May 30, 2011

Low Budget Parabolic Solar Cooker

A first approach to a self made, low budget (hopefully) solar cooker.



This article is my attempt at documenting my experience making a parabolic solar cooker. I have
been reading a lot about solar technologies on the internet and have had the great chance of working
with someone who owns a company that sells and designs solar thermal and photovoltaic solutions.
I wanted to get into a hands-on DIY project for a long time and the moment came when my father
moved to a new house. The old owners left their directv dish mounted on the roof, and since it was
no longer useful I decided it would be the perfect opportunity to take my first steps into the world of
solar heating, with a simple technology: solar cooking.
Before I start to describe my progress so far, I´d like to introduce myself and make a few comments
on the objective of this article. My name is Juan Sebastián Estrada, I’m a 27 year old environmental
engineer from Medellín, Colombia, where I currently live. Although I have a bachelor´s degree in
engineering and some understanding of mathematics and physics, I don’t have much experience in
mechanical engineering or anything of that sort, so for this kind of project I prefer to think of
myself as a simple amateur who is just starting his first solar project. Having said this, I hope that
this article will provide at least some useful information and encouragement for anyone who wants
to try and make their own solar cooker. There are lots of articles and information out there, a small
part of which I have read, and which are very useful, but I believe that every attempt should be
documented and discussed so we can learn from each other. Also, since I live in a Latin American
country, I will write the article in Spanish because I have found that there is a great lack of
information in my native language.

Read more , Low Budget Parabolic Solar Cooker

Solar Cookers in India

Solar Cookers in India news report

Hundreds of children attend the schools of the Muni Seva Ashram in the Western Indian state of Gujarat everyday. Their school meals used to be prepared over wood fires. Now a new project harnesses the power of the sun for the school canteen.

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