Comments on: How to Build a Parabolic Solar Cooker http://solreka.com/blog/solar-cooking/how-to-build-parabolic-solar-cooker/ solar lights, ovens, chargers, december 21 2012, conspiracy theories blog Mon, 06 Feb 2012 11:21:55 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: Terrell Schweers http://solreka.com/blog/solar-cooking/how-to-build-parabolic-solar-cooker/comment-page-2/#comment-77037 Terrell Schweers Wed, 30 Nov 2011 11:33:25 +0000 http://solreka.com/blog/solar-cooking/how-to-build-parabolic-solar-cooker/#comment-77037 How can I get more people to visit my blogger site? How can I get more people to visit my blogger site?

]]> By: cacarl http://solreka.com/blog/solar-cooking/how-to-build-parabolic-solar-cooker/comment-page-2/#comment-73693 cacarl Mon, 07 Nov 2011 02:14:24 +0000 http://solreka.com/blog/solar-cooking/how-to-build-parabolic-solar-cooker/#comment-73693 I once saw a documentary film here in our place about non-government organization who train local peasants on a remote area to make something, sort of solar energy needed for their house lights and appliances. This was really given much attention by this people since the government seems to forget people in the hinterland or budget for this saw spent somewhere else. The town's people was very thankful about this since they can already watch television after a days work in the farm or they have lamps on little store where they used together around after dinner. This is very helpful since electric bills are goingup every year. This is a big help for end consumers. I once saw a documentary film here in our place about non-government organization who train local peasants on a remote area to make something, sort of solar energy needed for their house lights and appliances. This was really given much attention by this people since the government seems to forget people in the hinterland or budget for this saw spent somewhere else. The town’s people was very thankful about this since they can already watch television after a days work in the farm or they have lamps on little store where they used together around after dinner. This is very helpful since electric bills are goingup every year. This is a big help for end consumers.
cacarl´s last [type] ..Hosted PBX Services

]]> By: Cynthia J http://solreka.com/blog/solar-cooking/how-to-build-parabolic-solar-cooker/comment-page-2/#comment-71568 Cynthia J Sun, 23 Oct 2011 04:54:51 +0000 http://solreka.com/blog/solar-cooking/how-to-build-parabolic-solar-cooker/#comment-71568 My experiance tells me that glass ware pots or borosil types of vessels or empty glass bottles/jars are very good option. cooking rice in transparent glass vessels help you to know the state of cooking. covered metal pots is devoid of this advantage. poor peaple use low quality aluminium vessels. acidic effect of vegetables like tomoto corrades or dissolve highly harmful aluminium alloys in food. taste is bad. glass is inert and does not react with food chemicals. could you please design a double walled toughened glass cooking pots of say 1 to 3 litre size. My experiance tells me that glass ware pots or borosil types of vessels or empty glass bottles/jars are very good option. cooking rice in transparent glass vessels help you to know the state of cooking. covered metal pots is devoid of this advantage. poor peaple use low quality aluminium vessels. acidic effect of vegetables like tomoto corrades or dissolve highly harmful aluminium alloys in food. taste is bad. glass is inert and does not react with food chemicals. could you please design a double walled toughened glass cooking pots of say 1 to 3 litre size.
Cynthia J´s last [type] ..career organizing

]]> By: SolReka http://solreka.com/blog/solar-cooking/how-to-build-parabolic-solar-cooker/comment-page-2/#comment-69385 SolReka Wed, 05 Oct 2011 12:09:58 +0000 http://solreka.com/blog/solar-cooking/how-to-build-parabolic-solar-cooker/#comment-69385 Hi Johny The videos are too complex in my opinion. Over-engineering of a simple problem. Parabolic shapes need to be highly accurate in order to make them efficient to use. Hand drawing parabolas will create more of a bowl shape than a parabola. The best way to create a parabola is to use a simple piece of CAD software and to have a good understanding of how parabolas work ref parabolic equation. Hope this helps. Hi Johny

The videos are too complex in my opinion. Over-engineering of a simple problem. Parabolic shapes need to be highly accurate in order to make them efficient to use. Hand drawing parabolas will create more of a bowl shape than a parabola.

The best way to create a parabola is to use a simple piece of CAD software and to have a good understanding of how parabolas work ref parabolic equation.

Hope this helps.

]]> By: Johny http://solreka.com/blog/solar-cooking/how-to-build-parabolic-solar-cooker/comment-page-2/#comment-69340 Johny Tue, 04 Oct 2011 23:42:01 +0000 http://solreka.com/blog/solar-cooking/how-to-build-parabolic-solar-cooker/#comment-69340 Can you comment on this design and investigation? http://www.youtube.com/watch?v=uX9Z-nsUHiA http://www.youtube.com/watch?v=9eY0xh23Anc Can you comment on this design and investigation?

http://www.youtube.com/watch?v=uX9Z-nsUHiA

http://www.youtube.com/watch?v=9eY0xh23Anc

]]> By: SolReka http://solreka.com/blog/solar-cooking/how-to-build-parabolic-solar-cooker/comment-page-2/#comment-67441 SolReka Wed, 21 Sep 2011 13:29:09 +0000 http://solreka.com/blog/solar-cooking/how-to-build-parabolic-solar-cooker/#comment-67441 Hi ChibiHoshi Mylar is great for solar cooking, so is kitchen (aluminium) foil, chrome vinyl, cds, basically anything which reflects the sun will work fine. The higher the reflectivity the better the performance of your solar cooker. Mylar and chrome vinyl have a reflectivity of approx ~ 98%, so these are the preferred materials to use as they are the most cost effective. Emergency blankets and food wrapping foil would work fine. Perhaps best used on box type cookers as you can stretch these materials out and get rid of any creases/folds. From all the various methods and materials I have tried when building solar cookers, I have to say that the parabolic design with chrome vinyl is the most cost effective method which produces the best results. Let me know if I can be of any more help. Happy solar cooking. Hi ChibiHoshi

Mylar is great for solar cooking, so is kitchen (aluminium) foil, chrome vinyl, cds, basically anything which reflects the sun will work fine. The higher the reflectivity the better the performance of your solar cooker. Mylar and chrome vinyl have a reflectivity of approx ~ 98%, so these are the preferred materials to use as they are the most cost effective.

Emergency blankets and food wrapping foil would work fine. Perhaps best used on box type cookers as you can stretch these materials out and get rid of any creases/folds.

From all the various methods and materials I have tried when building solar cookers, I have to say that the parabolic design with chrome vinyl is the most cost effective method which produces the best results.

Let me know if I can be of any more help. Happy solar cooking.

]]> By: ChibiHoshi http://solreka.com/blog/solar-cooking/how-to-build-parabolic-solar-cooker/comment-page-2/#comment-67292 ChibiHoshi Sat, 17 Sep 2011 00:23:04 +0000 http://solreka.com/blog/solar-cooking/how-to-build-parabolic-solar-cooker/#comment-67292 What are the drawbacks to Mylar aka why is it third on the list? Will emergency blankets work (cheaper and decent size) or doesn't it have to be the hydroponic kind (similar in cost to chrome vinyl)? What are the drawbacks to Mylar aka why is it third on the list? Will emergency blankets work (cheaper and decent size) or doesn’t it have to be the hydroponic kind (similar in cost to chrome vinyl)?

]]> By: SolReka http://solreka.com/blog/solar-cooking/how-to-build-parabolic-solar-cooker/comment-page-2/#comment-66431 SolReka Wed, 07 Sep 2011 21:26:09 +0000 http://solreka.com/blog/solar-cooking/how-to-build-parabolic-solar-cooker/#comment-66431 Keep it simple. Foil and cardboard boxes is all you need to harness the power of the sun. Check out - http://solreka.com/blog/solar-cooking/build-a-simple-solar-cooker/ Have fun. I wish I lived somewhere sunny. I would cook all the time using the sun. Keep it simple. Foil and cardboard boxes is all you need to harness the power of the sun.

Check out – http://solreka.com/blog/solar-cooking/build-a-simple-solar-cooker/

Have fun. I wish I lived somewhere sunny. I would cook all the time using the sun.

]]> By: curiouserandcouriouser http://solreka.com/blog/solar-cooking/how-to-build-parabolic-solar-cooker/comment-page-2/#comment-66430 curiouserandcouriouser Wed, 07 Sep 2011 20:48:54 +0000 http://solreka.com/blog/solar-cooking/how-to-build-parabolic-solar-cooker/#comment-66430 Hi, thank you for your article! This is something that has interested me for over a year, but I am just now delving into it. Love the simplicity of the article. I am considering having my 5th grader and 2nd grader do this as an incredible science experiment. We have an old DishNetwork dish that isn't anywhere close to being 1 meter across. I think it's more like 18 inches. I assume that would still work just as well as long as the focal point is centered properly? We live in Florida where we have hot, hot, hot sun to start with. I am so interested in this. Any suggestions when building this with young students? Should I have them start with aluminum foil for simplicity's sake or do you suggest something else? Thank you! Hi, thank you for your article! This is something that has interested me for over a year, but I am just now delving into it. Love the simplicity of the article.

I am considering having my 5th grader and 2nd grader do this as an incredible science experiment. We have an old DishNetwork dish that isn’t anywhere close to being 1 meter across. I think it’s more like 18 inches. I assume that would still work just as well as long as the focal point is centered properly? We live in Florida where we have hot, hot, hot sun to start with. I am so interested in this. Any suggestions when building this with young students? Should I have them start with aluminum foil for simplicity’s sake or do you suggest something else?

Thank you!

]]> By: lalalalala http://solreka.com/blog/solar-cooking/how-to-build-parabolic-solar-cooker/comment-page-2/#comment-62601 lalalalala Wed, 27 Jul 2011 13:20:44 +0000 http://solreka.com/blog/solar-cooking/how-to-build-parabolic-solar-cooker/#comment-62601 noob noob

]]>