Some kind of cover over the entire pot surface could hold in the heat while cooking the kind of stuff you have there. I imagine the wind is blowing away a large % of your energy. Maybe just an aluminum cookie sheet upside down with circles cut the size of the pots to keep the wind off the remaining surface of the grill.
WoW!, you realize you could put this threw your wall with a wood stove chimney pass threw and cook in the comfort of your kitchen ? ? And when not cooking you could warm your house. very cool ! 8)
Your idea is really good did you use water I tried a similar experiment using a Solar kettle (vacuum tube) which I purchased from amazon using cooking oil instead. It got to about 145 degrees C in about a couple of hours on a 25 degree C day. I think the same this system can be used as central heating in a building if you put a mirrored vacuum thermos flask based insulated heat storage reservoir underground. For radiating the heat in the building a pipe can be laid on the skirting.
It is nice silent picture of tubes, palte and two pans .. that is all .. how does it works ?? are tubes full of water and then heats up and the heat transfered to the the plate which is full of wtare also ?? That is what I think
The first one was introduced to the world by Alex Kee from Johor Bahru, Malaysia during the conference of Solar Cookers International in Granada, Spain, July 2006. Alex Kee sold them from 2003 in Southeast Asia. Now, this was the first one.
Ben, you inspired me and I bought 10 tubes - I am trying to insert the pipes into a thermocole box and thinking how to bring them under the utensil. Can you please give what did you put inside that box ?
Several ways I suppose. Remember, heat rises. But in this case it looks like some copper goes down the tubes from the plate/block. I'm thinking the heat would pass through that. You don't always need a fan. You don't need it to make heat rise for example. It does that all by itself.
this is genius! nice job! I would love to have this! Maybe some arc mirrors on the bottom like the gosun solar cooker to improve the efficiency a little bit.
The tubes are evacuated tubes. They have a vacuum between 2 layers of glass. Down the middle is a copper tube with a small amount of acetone in them. Acetone has a low boiling point. It boils and turns to a vapor and rises. when it gets to the top it condenses and runs back down the copper tube. on the top end of the tube is a copper bulb that extends into the reservoir below the pans. I don't know the exact design but I'm sure it has a liquid to extract the heat from the bulb. Probably water.
Interesting! But, I wonder if a parabolic reflector, focused on a hot-plate, might be a cheaper and more efficient solution? I seem to recall that you get about 2kw/m2 in the warmer parts of SA - So potentially a parabolic dish might concentrate more heat, onto a small area?
cool ! ! I mean HOT ! !! wow on a cloudy day you could just mount two cheap one foot by five foot mirrors (about $5 To $10) one on each side and increase your sun into the tubes, then you could BURN everything. Or cook it faster.
How about a large half tube full of oil w/flat plate on top? Though would probably have to fabricate a sheet of copper to make the 'oil burrow' and a feed tube that several cm higher than flat surface, to make sure no air in the half tube...
Mooi gedoen daar Jan, meer pype, en saam met 'n drukkoker sal dit uitstekend werk. Isoleer die warm plaat soos in 'n solar oond sodat minder hitte verlore gaan sal nog beter resultate lewer
Thanks, no I did not use water - inside the tube is a copper pipe - they use it for the more expensive systems - then the copper pipe conect to the aluminium and transferring the heat
The system provides only as much heat as far less complex and expensive systems widely used and that use about half of the collection area. It it had effective _circulation_ or the heat, whether by air or a liquid, it would probably deliver a lot more heat. But then it would be more complex and even more expensive. Kudos for a nice try but it just didn't work out well. A key requirement for a good practical solar oven appears to be concentrate (localized) the energy while it is still light THEN absorb the heat from it - simpler, far easier to track the sun (whether by automatic or manual adjustment) and inherently can be done with far less materials. The key to good design is to spend a lot of effort in considering all alternative basic approaches initially and select the best one, THEN work on the details. In this case the key to best design is concentrate and localize the energy while it's still in the form of sunlight.
Hi Sir, the plat form is solid aluminum, I order it from the the fabric. Look at this video, ua-cam.com/video/KbnlSRfK9Yo/v-deo.html - copper will also work, kind regards, and put 6 pipes for better performance.
Chris Gozzard No Chris, sorry, check out -Solar oven drawing-. I want to upgrade the thing also to 6 pipes and then I will repost all the steps but time is not always on your side, but I think it must happen still this year - kind regards Ben
If you create a parabolic reflector trough the same width as 6 tubes it will create nearly 6 times the amount of heat as 1 tube and save you from buying so many tubes. I know that 3 tubes with a reflector would more than double your heat . Transfer of heat could be slow unless you create convection for air flow.
NO ENTENDI COMO ES QUE CALIENTA LA COMIDA EN DONDE ESTAN LOS SARTENES HAY AGUA O CMO CALIENTA LA COMIDA COMO PASA EL CALOR DEL TUBO A DONDE ESTAN LOS TRASTES
Great Design and tube support! Do you know where one could buy Solar Evacuated Tubes with the heat pipes like yours. The search engines only lead to toy-like tubes on ebay that have no heat pipe or companies that will not speak to you unless you are a big developer or ready to pay now for a complete domestic hot water package for your new home. Thanks!
Ben Janse van Rensburg I am in the USA. There are many Chinese Suppliers but I feel there are challenges there and would need the help of a purchasing agent or something because there are so many prices offered, some unbelievably low and some very high. The US suppliers of Solar Evacuated Tubes seem so focused on one market, that of supplying complete and expensive systems for domestic hot water for rich homeowners, that they find it hard to muster the energy or courtesy to refrain from hanging up on you, if you are not ready with a credit card number to buy a package for a home. I want to make racks similar to yours that heat Koi ponds, plant ponds, hydroponic plater ponds just a very small amount and that will also distill water with the excess energy. I build mobile tanks that are very insulating, using HP thin-shell Cement technology. I also have a block design, looks like your fryer, that will switch on to make distilled water once the peak temperature of 88 F degrees is achieved. Any ideas on tube suppliers would be helpful. Thanks!
ShambhalaVillage I pay for mine 300 Rand, that is app. 30 Dollars each in the USA. I have lied to the retail person, told him that my grand children broke 2 pipes of my geyser, that i dont have at that time, while playing outside, and he bought my story. So i bought 2 for replacements and 2 for spares, but you are very correct, it was only the 4th supplier that was willing to help me. Whish you luck !!! Kind regards - Ben
I dont understand what all the componets are and how they went together...I would have no clue how to make this.. i wish this project was in very basic simple housewife instruction....:(
Please, please, please don't underestimate yourself or put yourself down posh, because you are a woman! I can do anything I put my mind to and better than most men. That is sometimes a feat for someone 5'3" and 110 lbs! I taught my sons to use power and hand tools and to fix nearly anything. In fact, my 18, 16, and 15 year old sons and I built a 45' x 18' addition onto our home, and remodeled the rest. The only thing I hired out was the concrete footings, floor, walkway, and drive. We gutted the majority of the rest of the house, upgraded to copper plumbing and new fixtures, new electrical including ethernet. I installed glass and marble tile in kitchen and bath, new cabinets and granite countertops. We even hand built the roof trusses. It is fine to ask for help or instructions, but be proud that you are willing and I'm sure, very capable to do a "man's" job! Here's a tip for all you guys out there. If a woman is in a store to buy building materials, tools, or parts to fix an appliance or car, don't assume that her husband sent her to town. I've had to set both men and women straight on that issue!
what you do is take the header of the video you want to know more about and put it into a new search you will find it will bring up many video's in the subject what you do then is have a bit of a look thru them and find one that explains how to do it pretty simple really when you think about it mate wouldn't you say?. lol your an Aussie as well and here i was thinking we were all smart ahaha. if you cant find what your after on youtube take the header to Google that always works hope i helped
Bennjanse, very good concept. I am working in solar cookers and have designed Parvati solar cooker. I have published the design on internet. I am really interested in replicating your work. Please send the details. There are videos of cooker on you tube.
Check this link - the acetone is inside the copper tube - the copper tube go into the glass vacuum tube with some aluminium around it. watch?v=4362YA8mO-8
what do you want to reach exactly??? be open and frank ..you can't transfere heat unless you use circulation pump .. that needs electricty ...... the whole idea is not workable then
Ok, first of all you are talking to someone that has never had anything to do with solar equipment before. Second I was a bit harsh with the doofus comment, I appologise, I am just frustrated to see stuff on you tube where people show pics and expect everyone who looks at them to know what it is all about. Starting out in a field is hard when you don't know much about it, and no I am not American tyvm.
Yes to warm cups but fuck no to cook a casserole.Which is why there's no video at all in this video or on this channel showing it boiling water from scratch in the 6 years since this was built. Awesome concept worth developing but certainly not feasible for cooking without way larger heat exchanges.
A bunch of clueless lamers criticized it, but they didn't see at the end where he said it was an experiment and to use another tube. The tubes could also be longer or larger. I think it would be helpful to have a reflector such as a parabolic trough under the tubes.
Replicate it how doofus??? give us some idea on how it is made, not just show a picture of it and hope people can channel into your thought processes and glean the information from there! sheeeeeesh !
Es lo mejor que a inventado el hombre por fin energia limpia
Some kind of cover over the entire pot surface could hold in the heat while cooking the kind of stuff you have there. I imagine the wind is blowing away a large % of your energy.
Maybe just an aluminum cookie sheet upside down with circles cut the size of the pots to keep the wind off the remaining surface of the grill.
Bennjanse,
Outstanding idea! Keep up the great work! Thanks for sharing my friend!
Michael J Montana
WoW!, you realize you could put this threw your wall with a wood stove chimney pass threw and cook in the comfort of your kitchen ? ? And when not cooking you could warm your house. very cool ! 8)
Thanks so much, you are really thinking out of the box - kind regards ☺☺☺
Your idea is really good did you use water I tried a similar experiment using a Solar
kettle (vacuum tube) which I purchased from amazon using cooking oil instead. It got to about 145 degrees C in about a couple of hours on a 25 degree C day. I think the same this system can be used as central heating in a building if you put a mirrored vacuum thermos flask based insulated heat storage reservoir underground. For radiating the heat in the building a pipe can be laid on the skirting.
That's a really great idea. Thank you for sharing with us :)
It is nice silent picture of tubes, palte and two pans .. that is all .. how does it works ?? are tubes full of water and then heats up and the heat transfered to the the plate which is full of wtare also ?? That is what I think
The first one was introduced to the world by Alex Kee from Johor Bahru, Malaysia during the conference of Solar Cookers International in Granada, Spain, July 2006. Alex Kee sold them from 2003 in Southeast Asia. Now, this was the first one.
Thanks for the link Ben, you made a really nice solar cooker. What is the substance/liquid in the tubes? Water, oil?
Ben, you inspired me and I bought 10 tubes - I am trying to insert the pipes into a thermocole box and thinking how to bring them under the utensil. Can you please give what did you put inside that box ?
Several ways I suppose. Remember, heat rises. But in this case it looks like some copper goes down the tubes from the plate/block. I'm thinking the heat would pass through that. You don't always need a fan. You don't need it to make heat rise for example. It does that all by itself.
Bring a Mirror behind the tubes, to use the sun which goes past.
Interesting concept. Thank you for sharing and posting Bennjanse.
this is genius! nice job! I would love to have this! Maybe some arc mirrors on the bottom like the gosun solar cooker to improve the efficiency a little bit.
+Josh Gustafson Thanks - put 6 pipes and you don`t need mirrors - kind regards
Muy buena idea, enhorabuena!!!
Mi pregunta es ¿Que temperatura máxima ha alcanzado? ¿Ha realizado mas pruebas?
Saludos.
De dónde eres soy de México.
Me interesa saber cómo construirlo. Saludos.
The tubes are evacuated tubes. They have a vacuum between 2 layers of glass. Down the middle is a copper tube with a small amount of acetone in them. Acetone has a low boiling point. It boils and turns to a vapor and rises. when it gets to the top it condenses and runs back down the copper tube. on the top end of the tube is a copper bulb that extends into the reservoir below the pans. I don't know the exact design but I'm sure it has a liquid to extract the heat from the bulb. Probably water.
Is something black inserted or is it manufactured this way?
Interesting! But, I wonder if a parabolic reflector, focused on a hot-plate, might be a cheaper and more efficient solution? I seem to recall that you get about 2kw/m2 in the warmer parts of SA - So potentially a parabolic dish might concentrate more heat, onto a small area?
+Richard King (ADI) Fresnel Lens.
Very nice. good thinking and idea.
With some reflectors behind the vacuum tubes you wouldn´t need a 5th one.
Great initiation sir...
Excelente idea, felicitaciones
can you give the details of the solar hot plate?
cool ! ! I mean HOT ! !! wow on a cloudy day you could just mount two cheap one foot by five foot mirrors (about $5 To $10) one on each side and increase your sun into the tubes, then you could BURN everything. Or cook it faster.
How about a large half tube full of oil w/flat plate on top? Though would probably have to fabricate a sheet of copper to make the 'oil burrow' and a feed tube that several cm higher than flat surface, to make sure no air in the half tube...
Gracias...
Honey you burned the baked beans again 🫘 🤔🌞🔥🔥🔥
Click on bennjanse - click on videos - click on solar oven drawing - hope this help
They put no oil, Just a acetone?
Why don't you use reflectors to increase the heat .
Mooi gedoen daar Jan, meer pype, en saam met 'n drukkoker sal dit uitstekend werk.
Isoleer die warm plaat soos in 'n solar oond sodat minder hitte verlore gaan sal nog beter resultate lewer
bery good good , bravo
How to make it ???? Please tell us I frome México City Congratilations.
Are these units sold,or plans on how to make them sold?
Nice for green energy saving cooking :)
i would really wan to cook on this kind of solar cooker.... its amazing...
Thanks so much☺☺☺
Thanks, they fill the copper tube inside the collecter with 50 ml of acetone.
great job!! Longer heat pipes could be used to keep pots out of the sun?? I will try..
I think it will work. I am thinking like I can use it like heat bank then bring the heat inside .
Bennjanse, you have asked others to replicate it. give the details how the etc tubes are connected and is there any heating fluid.
Those of us that think we are smart usually aren't.
Bravo!
Thanks, no I did not use water - inside the tube is a copper pipe - they use it for the more expensive systems - then the copper pipe conect to the aluminium and transferring the heat
The system provides only as much heat as far less complex and expensive systems widely used and that use about half of the collection area. It it had effective _circulation_ or the heat, whether by air or a liquid, it would probably deliver a lot more heat. But then it would be more complex and even more expensive.
Kudos for a nice try but it just didn't work out well. A key requirement for a good practical solar oven appears to be concentrate (localized) the energy while it is still light THEN absorb the heat from it - simpler, far easier to track the sun (whether by automatic or manual adjustment) and inherently can be done with far less materials.
The key to good design is to spend a lot of effort in considering all alternative basic approaches initially and select the best one, THEN work on the details.
In this case the key to best design is concentrate and localize the energy while it's still in the form of sunlight.
Good job!
Brilliant.
Mr.Ben Janse van Rensburg how did you make the plat form ? can you provide the drawings ? and do u filled any liquid in that platform ?
Hi Sir, the plat form is solid aluminum, I order it from the the fabric. Look at this video, ua-cam.com/video/KbnlSRfK9Yo/v-deo.html - copper will also work, kind regards, and put 6 pipes for better performance.
Good
Hallo Ben jy kan n gebuigde plaat agter heaters sit en dan gaan jy "teveel" hitte hè...
Ben.. You posted this video two years ago.. what progress have you made? Is this still working? Solar cooking here in Limpopo!
Yes Sir, using on a daily basis, but remember, put in 6 pipes as recomended.
do you have building instructions? a guide?
Chris Gozzard No Chris, sorry, check out -Solar oven drawing-. I want to upgrade the thing also to 6 pipes and then I will repost all the steps but time is not always on your side, but I think it must happen still this year - kind regards Ben
No worries Ben. I think a lot of people would be interested in how it works. Chris
If you create a parabolic reflector trough the same width as 6 tubes it will create nearly 6 times the amount of heat as 1 tube and save you from buying so many tubes. I know that 3 tubes with a reflector would more than double your heat .
Transfer of heat could be slow unless you create convection for air flow.
NO ENTENDI COMO ES QUE CALIENTA LA COMIDA EN DONDE ESTAN LOS SARTENES HAY AGUA O CMO CALIENTA LA COMIDA COMO PASA EL CALOR DEL TUBO A DONDE ESTAN LOS TRASTES
What are you heating in the tank, water or air
There is no tank, it is solid aluminum.
benn where did you buy your vacuum tubes from? I'm looking for a jhb supplier
Put high sensitive mirror reflector under tubes..😊😊
Great Design and tube support! Do you know where one could buy Solar Evacuated Tubes with the heat pipes like yours. The search engines only lead to toy-like tubes on ebay that have no heat pipe or companies that will not speak to you unless you are a big developer or ready to pay now for a complete domestic hot water package for your new home. Thanks!
Thank you Doug, what country are you from ?
Ben Janse van Rensburg I am in the USA. There are many Chinese Suppliers but I feel there are challenges there and would need the help of a purchasing agent or something because there are so many prices offered, some unbelievably low and some very high. The US suppliers of Solar Evacuated Tubes seem so focused on one market, that of supplying complete and expensive systems for domestic hot water for rich homeowners, that they find it hard to muster the energy or courtesy to refrain from hanging up on you, if you are not ready with a credit card number to buy a package for a home. I want to make racks similar to yours that heat Koi ponds, plant ponds, hydroponic plater ponds just a very small amount and that will also distill water with the excess energy. I build mobile tanks that are very insulating, using HP thin-shell Cement technology. I also have a block design, looks like your fryer, that will switch on to make distilled water once the peak temperature of 88 F degrees is achieved. Any ideas on tube suppliers would be helpful. Thanks!
ShambhalaVillage I pay for mine 300 Rand, that is app. 30 Dollars each in the USA. I have lied to the retail person, told him that my grand children broke 2 pipes of my geyser, that i dont have at that time, while playing outside, and he bought my story. So i bought 2 for replacements and 2 for spares, but you are very correct, it was only the 4th supplier that was willing to help me. Whish you luck !!!
Kind regards - Ben
where do you get those glasss tubes at
hey ben where did you get the evacuated tubes?... thanks
+eric newmen 108 Vereeniging avenue
Fauna - (opposite Game and Engen garage at Robot)
Bloemfontein
Phone: 051 - 421 3100 / 0822520760
Email: landwyd@gmail.com
Contact Person: Deon Lombard , Elmarie van Rooyen
+Ben Janse van Rensburg thanks
350, copper evacuated tube type
Thanks I agree ☺☺☺
I dont understand what all the componets are and how they went together...I would have no clue how to make this.. i wish this project was in very basic simple housewife instruction....:(
Please, please, please don't underestimate yourself or put yourself down posh, because you are a woman! I can do anything I put my mind to and better than most men. That is sometimes a feat for someone 5'3" and 110 lbs! I taught my sons to use power and hand tools and to fix nearly anything. In fact, my 18, 16, and 15 year old sons and I built a 45' x 18' addition onto our home, and remodeled the rest. The only thing I hired out was the concrete footings, floor, walkway, and drive. We gutted the majority of the rest of the house, upgraded to copper plumbing and new fixtures, new electrical including ethernet. I installed glass and marble tile in kitchen and bath, new cabinets and granite countertops. We even hand built the roof trusses. It is fine to ask for help or instructions, but be proud that you are willing and I'm sure, very capable to do a "man's" job! Here's a tip for all you guys out there. If a woman is in a store to buy building materials, tools, or parts to fix an appliance or car, don't assume that her husband sent her to town. I've had to set both men and women straight on that issue!
where to buy one?
what you do is take the header of the video you want to know more about and put it into a new search you will find it will bring up many video's in the subject what you do then is have a bit of a look thru them and find one that explains how to do it pretty simple really when you think about it mate wouldn't you say?.
lol your an Aussie as well and here i was thinking we were all smart ahaha.
if you cant find what your after on youtube take the header to Google that always works hope i helped
Nice idea congratulations
Thanks very much ☺☺☺
Ben Janse van Rensburg
I from Uruguay is a good idea realy congratulatios keep in contact.
Thanks so much.
Can you make a video of the construction of the same?
Any idea for sea water destination, Sir?
Bennjanse, very good concept. I am working in solar cookers and have designed Parvati solar cooker. I have published the design on internet. I am really interested in replicating your work. Please send the details. There are videos of cooker on you tube.
Check this link - the acetone is inside the copper tube - the copper tube go into the glass vacuum tube with some aluminium around it. watch?v=4362YA8mO-8
Will be better with voice, explanation and how was doit.
I'm not sure what you need to know. I'll try to help if I can.
nice
Thanks !!!
Thanks for the info, can you maybe send me a link or a photo. I could not find it on the net - kind regards.
foarte tare...i will replicate
Read about the "thermosyphon effect" before neglecting.
all i need is to go into the desert with an egg and 1m2 sheet aluminium place it for 4 minutes than drop the egg
what do you want to reach exactly??? be open and frank ..you can't transfere heat unless you use circulation pump .. that needs electricty ...... the whole idea is not workable then
cool
look for a video on youtube called "Tortilla Sunshine."
There is no sound on your video?
Yo lo fabrique pero usé vidrios de espejos
Ok, first of all you are talking to someone that has never had anything to do with solar equipment before. Second I was a bit harsh with the doofus comment, I appologise, I am just frustrated to see stuff on you tube where people show pics and expect everyone who looks at them to know what it is all about. Starting out in a field is hard when you don't know much about it, and no I am not American tyvm.
Dankie - gebruik hom daagliks.
Where can I buy one?
To me too
well i think im smart and you know what i am
Some commentary would be helpful.
Thanks, TV, here is the drawing - watch?v=KbnlSRfK9Yo
1000 dollars per tube.
A movie with no sound is as bad as blank paper woth nothing in it
But you could just comment on something you've never done and feel better about yourself... for a minute.
Good job Ben.
Yes to warm cups but fuck no to cook a casserole.Which is why there's no video at all in this video or on this channel showing it boiling water from scratch in the 6 years since this was built. Awesome concept worth developing but certainly not feasible for cooking without way larger heat exchanges.
A bunch of clueless lamers criticized it, but they didn't see at the end where he said it was an experiment and to use another tube. The tubes could also be longer or larger. I think it would be helpful to have a reflector such as a parabolic trough under the tubes.
Yep a little explanation would have went a long way.
Sir tube me copper pipe bhi he kya kis there tyar keya video send kere 8824110816
Dear Ben Janse, can provide the detail for this solar cooker. Please give your email id. I want to contact you about further development.
Replicate it how doofus??? give us some idea on how it is made, not just show a picture of it and hope people can channel into your thought processes and glean the information from there! sheeeeeesh !
not working
mine work fine
there is no information=just a waist of time
cheaper to by colmen stove
?
bennjanse@gmail.com
Thanks !!!
bennjanse@gmail.com