Solar Energy

If you have any idea about solar cooker than share with ME... 

Posted by ramoliya_ankit 4 years ago



Suggestions for another part of the heliostat is needed!

Https://www.instructables.com/id/HELIOSTAT/First of all thank you especially forgesmith for your help. Now is the time for the replacement for the rubber bands (to split the distance) in the plan. Any ideas? My twin spools that retract like a tape measure can work. Also 2 "geared" wires with a gearwheel in the middle would work. The centre of the reflector be joined to a piece that passes through the gearwheel.(I will draw it later!) Anyways, hope to get some answers. Thank you BrianThe part of the question below has been answered!Basically i have to attach the reflector so that it can swivel round the mounting.The way old farm tractor 3 point linkages worked on the back would be perfect. The side arms have a little ball in them and you put a shaft on the attached plough or whatever through a hole in the ball and fasened it with a clip. Imagine the reflector in place of the side arm and you have a perfect attachment BUT there is probably a modern urban alternative. Can you think of one?I am in no big rush myself because I have a big work project to complete but suggestions would be awesome for the near future.Thank you Brian White

Posted by gaiatechnician 10 years ago


Electric Cooker Element Grey Dust

My kenwood cooker was sparking and deposited a grey dust inside

Asked by idlea 2 years ago


Kyoto trough 2 wing concept. Try it in a panel cooker?

Panel cookers are simple solar cookers that are made by folding cardboard. When folded, sunlight shines on the panels and gets reflected to the cooking pot. (Normally the cooking pot is painted black and it is often covered in an oven bag to keep heat in better). But, I have never seen a picture of a panel cooker with the side folds in towards the cooking pot instead of out away from the pot. My tests indicate that it will cook for a longer time if you face the side panels in. Anyone want to try it? Also, the tests in software show that a normal panel cooker might give better if it was made with a long tail in line with the path of the sun. Would you like to make small ones and compare this to a normal panel cooker? Small ones heating pint jars of water might be very good for comparison. I have too much cloudy weather to do this. Also, do not worry too much about parabolic. A part circle is just as good for solar cooking and the important thing is to have the axises of curve (Perhaps there is a correct word?) of the troughs or panels at right angles to each other. Brian

Posted by gaiatechnician 9 years ago


"Compound" parabolic solar cooker. Suggest a way forward!

I have a new instructable (Late December) about making your own templates with technical drawing tools. You can basically make the compound parabolic dish to catch 1,2,3 or 4 hours worth of sunlight. I have made a 3 hour dish and it worked great as a solar cooker. I have not however solved the math for exactly how the light reflects to the cooking pot. It is pretty good but not yet optimized. Would anyone like to join in? I can either make the instructable a collaboration or you can post your refinements on appropedia on their wiki.I do not want this project to lie stillborn like the pulser pump did for 20 years but how to engage people? Thats the real problem. Thank you Brian White 21st dec 2008 and it has worked really well. I would like others to try it so I made a template. I chalklined across the dome at 15 degrees intervals, Put clear plastic over it, marked the lines on the plastic and cut the plastic. Basically all you have to do is cut a piece of ply to be like the template, use it to cut out 12 mylar segments and then tape them together. (I do not know how you will hold this umbrella open, thats up to you!)My dimension lines were vertical on the paper, it just looks angled from the picture. Figures (all in inches) are 0.5,15.5,17,31,7,12,2.5 and 3/4 just in case you cannot read them. Its a funny looking template but I think it is good enough of an approximation for this. I devided the 2 long curves into straight lines.Should be fine. I also have a pdf file containing results, etc as the second image file. Just click on it and it should open. (solar for group.pdf) Brian Brian

Posted by gaiatechnician 9 years ago


Need some help on a solar oven design, please.

It's going to be one of those with a box chamber with gathering panels. Should the inside chamber of a solar oven be black, to absorb the heat, or should it be reflective to make sure that the tray and food are the only things that absorb it? What shape should the chamber be?

Asked by GigaHertz 9 years ago


Can combined troughs replace parabolic dishes for amateur solar cooking?

I have being doing limited testing of the combined trough shown below and it seems to work as expected. I used a 4ft by 8 ft piece of corrugated plastic for the big trough (too wide but I was reluctant to cut it). Compared to dishes, this was incredibly easy to make and actually gives more reliable concentration over a longer time period. Would anyone like to try it on tiny demo scale? (I mean something tiny made with 1ft by 2 ft paper perhaps) see if you can make a panel cooker with the design as a template? I think it will work with hemisphere curve, or parabolic curve, any curve or panel cooker shape that shines the light on a cooking vessel. Key points. 1 The troughs must be curved in directions that are at right angles to each other. 2 the long primary collector trough must be in line with the path of the sun.And thats basically it! The primary trough concentrates light in one plane and the secondary trough (the little wings round the red pot) concentrate it in the other plane. I then tried to get software to show if it was any good and It seems to show that it would cook for significantly longer than a parabolic dish. But the software showed that it was not as good as I had hoped. From running the software (art of illusion) I came up with the kyoto trough as a possible solution.The kyoto trough is a trough made by taking 2 halves of a parabolic trough and twisting them a little inwards roung the focus. This can focus all the light between the focal line and the bottom of the trough for a time period coresponding to the angle of twist. 15 degrees of twist coresponds to one hour. http://www.youtube.com/watch?v=uX9Z-nsUHiA. That is a really useful property because it confers reliability. The next part of the kyoto trough can just be an ordinary parabolic trough to do a final concentrationof the light onto the cooking pot. Well 2 small troughs to deal with 2 streams of light going towards the cooking pot from either side of the trough. Are any mathematicians interested in resolving the troughs into a Kyoto Dish? which would give much longer cook times than a parabolic dish.Brian

Posted by gaiatechnician 9 years ago


Why does the water in my rice cooker only gets warm and not cook?

I have a 60 cup rice cooker with two functions, cook and warm. it use to cook just fine for the 4 times i used it and i tried several time after but the water only gets warm and does not cook the rice. what can be the problem.

Asked by CourtneyK11 2 years ago


Old cardboard box wins major "green" prize.

Want to get credit for an idea that is older than you are?Simple - give it a cool name and tie the idea in with trendy green terminology.A cheap solar cooker has won first prize in a contest for green ideas.The Kyoto Box is made from cardboard and can be used for sterilising water or boiling or baking food. It's just a basic solar cooker - cardboard, black paint and aluminium foil - but discussing it in terms of sustainability and carbon credits makes it worth 75,000GBP and potential mass-marketing contracts.(Cynical? Me?)(Story)

Posted by Kiteman 9 years ago


Need help designing an outdoor, propane fueled roux cooker for gumbo

Our Kiwanis club has a roux party every year where a dozen or so people cook roux in cast iron pots over gas burners. Hours of stirring of various liquids, veggies and spices (added at intervals through out the cooking cycle). Cooked until it becomes a solid about the consistency of moist turkey dressing, to be dipped out into a pan and then start a new batch. What we need is something like a small cement mixer with burners. Something that will heat liquid, mix, and dump or we can scoop out when it's solidified. The stirring needs to be constant hence the cement mixer premise. If it doesn't mix well and parts of it burn then the entire batch is ruined. Electricity is available, propane bottles for fuel. Tried thinking through something with two metal cylinders, one inside the other with the gas jets between the two but the rotation part is the issue. Any help will be appreciated, and of course since we are a small nonprofit the cost needs to be as low as possible.    Thank you !      Tray10 

Posted by Tray10 4 years ago


Solar panel mounting and tracking.

I have a new video about equatorial mount for solar panels. If equatorial mount is turned slowly at the right constant speed, then the panels point at the sun all the time. I also have a diagram about something to get that constant slow speed. I have it done this way to avoid wind damage. I think if you did it this way and had a sump pump to pump the water back up every morning the thing could be  automatic, cheap  and very accurate. Brian

Posted by gaiatechnician 8 years ago


induction cooker, anyone?

I'm searching for induction cooker scheme for my class project. its DIY indution cooker project. unfortunately, i dont know how induction cooker work and how to make it. can you help me? 

Posted by Am-Nuel 8 years ago


Anyone can help me?i need to know what material which conduct heat but insulate electricity?

Im making this hot plate..im using a 600w and 240v heating element..when i first switch it on..without any girdle or plate on top of the heating element, it was going smoothly..then as i attach the girdle or plate on top of the heating element..suddenly disaster strike..my workshop power supply was trip and i know something wrong with my hot plate or electrical cooker. I then started to trouble shoot what is the problem. Guess what, i made a mistake in buying a girdle. The girdle that i bought was an ordinary girdle use for people selling burger at the stall to cook the beef and patty. Obviously, that girdle was not made for electrical cooker. It is made for heat induction cooker which use fire to heat up the girdle from the bottom. Now in order to complete my cooker, I need help from all of you guys which is more expert in this matter. Are there any materials which I can use for making the hot plate?Material which can conduct heat but does not conduct electricity. If you guys have some idea, please do help me. Thank you for reading this and thank you in advance for those who help me out.

Asked by trojanator 7 years ago


Could you weld with an induction cooker? Answered

Having seen the microwave transformer welding kit and similar projects I started wondering about this one... Induction cookers are basically one side of a transformer and usually just dissipate current in to the pot to heat up the pot. But they've a high number of coils and I've seen them rated at 3000 watts, so if you made a coil that was a few turns of thick wire to be the other side of the transformer you'd possibly be able to have a huge current low voltage supply similar to the microwave oven welder. I imagine there'd be safety devices that may need disabled but the idea of your oven being a welder seems cool to me, especially if someone had a need to weld often and their kitchen was through to their garage.

Asked by killerjackalope 9 years ago


Poor man's slow cooker?

Hello all, I tried to search an instructable down but I haven't so far.  Has anyone done something on doing a poor man's slow cooker?  I don't really want to buy a slow cooker cause they are mostly used for cooking meats, and the last thing me or probably anyone needs to do is eat more meat.  I just have a few recipes that call for a slow cooker and would like to try them out.  I'm thinking I could just cook in a regular pot and keep the temp or flame really low.  Is it really that easy?  Inquiring cat would like to know!

Asked by User1 4 years ago


potato vodka?

I am currently in an issoalted camp in the north and am interesting in making some potato vodka.  Potatoes are readily available and I can scrounge the materials for a still. But there is not a pressure cooker here. Could I cook the potao mash/juice in a regular pot on the stove? I know a make shift pressure cooker is proably dangerous and totaly out of the question, although it did cross my mind.

Asked by Nickey9Doors 8 years ago



Broken rice cooker: what is wrong with it and what is the flat thing?

We've had our second rice cooker fail (this Black&Decker rice cooker replaced an Aroma rice cooker which failed). What happened was it started to stink and didn't cook well, then finally the thermal cutoff inside failed. I've already had the exact same problem with the previous Aroma rice cooker... let me explain: In that Aroma Rice cooker which failed, I replaced the thermal cutoff with a direct connection and it worked! Well sort of... It actually overheated all the time, but didn't heat the food very much. Inside the connections I had made were melting/burning and it was always stinking, so of course we did not use it anymore. So this means there was something else wrong with that rice cooker. It overheated for a reason, and removing the overheat protection caused it to overheat. Rice cookers are very simple, so I have no idea what the problem was (and is). The only suspect is some weird rectangular thing i've seen, where two wires go in; one to the switch and the other to the element. So with this Black & Decker rice cooker, which has been working for quite a while (maybe a year or two), it finally failed by overheating the same way the old rice cooker did when I removed the overheat protection. It stunk a bit and didn't heat up well, then the thermal cutoff broke and it became dead. Replacing the thermal cutoff won't fix it because it would just overheat again. So what is wrong? Is it that rectangular thing? I opened the rectangular thing... inside there is a sandwich of materials and a wire... The first layer is the top metal cover which covers it up (and also always becomes rusty). The second layer is a thin papery insulator (or I think it is). The third layer is the same kind of insulator, but cut and it has a thin wire wrapped around it connected to the two wires going to the whole thing. The fourth layer is another insulator like the second. And the fifth layer is the metal frame which all the previous layers sits into, and the frame is bent around them to hold it together, and it has a screwhole to attach it. What is this thing? Is it some resistor? Does it increase resistance as it heats up, to regulate the temperature? And could this be what failed?

Asked by poiihy 3 years ago


cooker hood condenser

Ok i have moved into a new studio which does not have an external vent fitted to the cooker hood and relies on a re-circulation kit comprising of a small tower and a disposable carbon filter (which can cost quite a bit to keep replacing). So what i was thinking was how about ducting it to a homemade condenser, something simple like a plastic container with a cut off of hood filter attached to an area near the top of the container and the vent ducted in through the top of the container it could be primed with an inch or so of water to get the process going..... i recon my concept is pretty basic but am i heading in the right direction?

Posted by Tallanted 5 years ago


Rice Cooker Burger, Robot Zombie Figurine, Cup Sphere Lamp

  Rice Cooker Burger Robot Zombie Figurine Cup Sphere Lamp Resurrect a Motorcycle Make Bath Bombs Cheap Masquerade Masks Hybrid Solar Panel Arduino on a Perfboard Rope Bridge Bookshelf Upgrade Your Promo Camera Iron Man Make a Talking Clock Coffee-Stained Coffee Table Simple Microscope Webcam Make a Garden Fountain  

Posted by randofo 8 years ago




Is a Stainless Steel pressure canner the same as a Stainless Steel cooker?

I want to learn how to do the canning of foods and have come across a Stainless Steel pressure canner but as I live in the UK I am wondering if this is the same as a Stainless Steel pressure cooker?

Asked by welshwaters 9 years ago


Simple Solar Cooker

Hi,I was invited by GoWithFlo to add this project to the FullBellyProject group. From my understanding this group would be an ideal place to discuss improvements to the design and more importantly test it in the field.Please don't hesitate to ask any questions and provide any comments!Thanks!Kevin.

Posted by yaaaay 11 years ago


Camping resource

This is a good website on how to do stuff and how to take care of camping equipment. http://www.outdooreyes.com/outdooradventureindex.php3

Posted by Yerboogieman 9 years ago


What do you think the Pro's and Con's of a small tent are for camping? Answered

Yes, First camp for this year. Finally warm enough.

Asked by Yerboogieman 9 years ago


What would you do with a big satellite dish?

That's right. I have just become the proud owner of a big oldschool satellite dish. It is made from fiberglass and has some of its support/mounting hardware. I have some ideas about what I want to do with it but I'd be glad to hear your ideas too! Brainstorm away!

Asked by snotty 6 years ago




Best Slow Cooker Recipes

I know we all got 'em but what's your favorite slow cooker recipe? I'll show you mine if you show me yours ;) 1 4-5 pound Pork Butt Roast 1 Tablespoon seasoned salt 1 tablespoon garlic salt 1 tablespoon pepper 4 tablespoons liquid smoke 1 large sweet onion, sliced into rings 1 cup water Mix the dry seasonings together in a bowl. Rinse the roast off and then hit with the liquid smoke, rubbing in where crevices are. Sprinkle on the dry seasoning and rub into meat. Pour the 1 cup of water into crock pot and then place the meat in being carful not splash water every where. Cover in your cut onion, place the lid on, set the heat to low, and allow to cook for 7-9 hours. When you pull it out, just shred it up with a couple forks and serve on buns with some (homemade) barbecue sauce.

Posted by TomatoMustard 7 years ago



Induction cooker or induction heating. DIY project circuit diagram. schematics or anything to make a project Answered

I'm Bachelor of engineering student. For my final semester project i have chosen Induction cooker as my project. I know how it works and I'm very known to micro controllers. I searched on Google for a perfect circuit to  make an induction cooker(~0.5-1kw) ..I know PCB design and fabrication. I can get any thickness copper wire to make coils. 1) I know the principle of working of induction cooker. 2)I know switching devices are used to convert normal voltage to high frequency power . 3) I can get raw materials and required components. 4) I NEED its CIRCUIT diagram to complete working project. I will fabricate and produce it myself. It s for my Project. 5) out put power may be anything from ~0.5 to ~1kw or lesser but project must be working at the time of demonstration to the examiner. 6) efficiency and all doesn't matter much as examiner wont measure all those things in practical session. 7) PLEASE ITS VERY URGENT. I NEED CIRCUIT DIAGRAM OF INDUCTION COOKER OR INDUCTION HEATING. Don't have much time to chose another project. I'm very interested in this topic. or suggest me any other in this power electronics field. Thanks

Asked by sumanth13 6 years ago



How would I go about making a forge from a pressure cooker?

I am interested in making a forge, and I think the pressure cooker would be a good idea. Am I wrong? Any information would be helpful. It is 18 inches across. Thanks EDIT: I am looking for a metalworking forge

Asked by randone 6 years ago


Kyoto Trough, is it greener than the Kyoto Box?

The idea behind the Kyoto Trough is to use a parabolic trough (rotated inwards round its focal line) so that all the light it collects over a certain time (1 2 3 or 4 hours) focuses BELOW the focal line. Then you use other troughs (probably facing at right angles to the first one) to concentrate this light further onto the cooking pot. I have done a rudimentary test in software and the concept does work there. I think it will also work as a panel cooker. It is very important to line up the primary trough with the path of the sun across the sky. It should also work as a panel cooker. Just a much longer panel cooker with the v shaped little wings like in the diagram Or perhaps a panel cooker with just one "tail" going up in the air and insulation on the back half of your cooking pot? (taking away one half of the device) Thanks Brian

Posted by gaiatechnician 9 years ago


I got another question.

Guys..i got another question. I'm interested in this one project. Here's the link (http://www.tuvie.com/portable-parabolic-cooker-collects-solar-energy-to-cook-your-food/comment-page-1/#comment-19374) It heat up oil using the solar and the oil is the one which produce heat to the coil which will be use for cooking. My question is do you guys have any idea what oil is being used? I'm trying to find out about the oil because that solar cooker is much more easier than what I'm planning to built. That's the only problem about the solar cooker, I don't know what type of oil is used.

Posted by trojanator 8 years ago



DIY autoclave? Ideas?

Does anyone know of a way to build an autoclave? I know that they are essentially pressure cookers on steroids, but would a standard pressure cooker truly sterilize something? No, I'm not trying to give myself tattoos or attempt surgery on the cat. It would be mostly for biology experiments, such as swabbing cultures. I could get one on eBay for about $150 minimum, but I don't really feel like spending $150 to grow bacteria. Any ideas?

Posted by CameronSS 10 years ago



Turkey Temp Help

I roasted a turkey to safe temps and turned the cooker off 10pm, Fell asleep then came back at 4am temp was at 140-150. Is it safe?

Asked by landsmob7 6 years ago



Cheapest Solar Water Heater and Cooker needed which can keep the water warm for a few hours

I have read many of the instructables about hot water heaters. I am a person living with a really meagre salary so can not afford to find or buy things like refrigerator backs or car radiators. Even though, after having read all these instructables, I have a need as well as a wish to have some kind of water heater that can atleast warm the water in cold / rainy weather to a level which does not feel cold. Something ofthe body temperature level or warmer will do. AND after warming this water, it can be kept for a few hours without much loss in the temperature. Quantity could be like 10 liters or so. Any help most appreciated. The instructable using cold-drink bottles is a nice one but the quantity of water is very small so can't be used for bathing / washing etc. I'm also looking for a solar cooker with very low costs, which is able to cook rice in about 2 hours time. Any and all help greatly appreciated. Thanks, RS

Asked by rseni 9 years ago




How to stop slow cooked (crock pot) food having watery gravy? Answered

When I use my slow cooker (crock pot) the food is always cooked properly but the gravy/juice is large in quantity and very watery.  I know I can tip the sauce into another pan and thicken it with cornflour, but that seems to miss the point of an energy efficient one pot meal. Can any one offer any ideas and/or recipes that don't have this problem?

Asked by lizzyastro 7 years ago




Sous vide with a slow cooker?

I've been intrigued by sous vide cooking, but I don't have any inclination to play with arduino(?) controllers or wire/solder anything. Is there any reason you couldn't use an older (non-digital) slow cooker/crockpot with a Lutron dimmer cord?  We use the dimmers on all our bedside reading lamps, but they're rated for up to 300 watts.  It would take some experimenting to get the temperature right, then I think I'd tape a "stop" on the slider switch at that point.  Any thoughts?  Raising the food from the bottom of the pot?  An upside-down silicone cake pan, maybe?  Or suspending the bag somehow?  I already have a Foodsaver. I'd be happy to hear any thought or suggestions. http://www.amazon.com/gp/product/B0000DI241/ref=pd_lpo_k2_dp_sr_2?pf_rd_p=486539851&pf_rd_s=lpo-top-stripe-1&pf_rd_t=201&pf_rd_i=B0000BYEF9&pf_rd_m=ATVPDKIKX0DER&pf_rd_r=0WRPJ5W9TWM39K9Z1Y9N

Posted by kcbirder 6 years ago


Software for designing solar cookers and reflectors for solar panels

Parabolic dishes are favoured because they are "perfect". Unfortunately they are only perfect if they are kept constantly pointed at the sun. In practice this is very hard to do. A better shape would maintain good reflection of the sunlight for a long time without moving the dish.I think I have found useful easy software to help with this design work. It is called art of illusion and you can see my first results and a downloadable scene file to help you get started on step 12 of this instructable https://www.instructables.com/id/Make_a_quotcompoundquot_parabolic_solar_cooker/Brian White

Posted by gaiatechnician 9 years ago