Russell spent a lot of his time and energy into this system of Smokeless Stove idea and in this initiative he shows how to implement his learnings into practical solutions. It's very humbling to see someone in his position taking up such initiatives to help not just rural Indians but people across other developing nations. Thanks Russel for sharing all your videos and doing a cracking Job! Very grateful for your efforts.
Hi Ankit, that's very kind of you and thank you for your words of appreciation. I can't take much credit for this project as it involves many people, especially my good friend Nitisha Agrawal in Mumbai who is director at the Smokeless Cookstove Foundation who is actively involved in sharing this work to many others in the field.
@@Rocketmandesigns Of course this is a part of a larger initiative and it takes many to translate these technological solutions into people's lives. Having said that, I saw other videos where your share evolution of the Himalayan Rocket, that took signicant effort and time so I thought it say thank you on behalf of tech-minded people who appreciates when a well tuned technological solutions translates into normal lives to bring about real positive change 👍
Thanks a lot for delivering such a wonderful idea Sir. I did make it and and it's working like you mentioned in the video. High fuel efficiency blended with completely smokeless performance is its USP. THANKS AGAIN SIR. 🙏
Excellent easiest design for the rural habitat to make it by low cost available resources. This a combination of Downdraft, Gasification, vortex flame & Rocket action. If some one understand the principles of its function, can make the stove at any shape.
Thanks Russel for helping me to build a rocket stove for a friend for his kitchen. Its easy and interesting how you collected all materials from nature around and eco friendly. I am encouraged by your method. Regards from Northeast Assam, India
Pal, that's wonderful, just add a little bit of limestone mix with the rest of the ingredients that you make to build the stove and the heat will not escape.
Innovative use of puffed rice for insulation. Great idea, especially for Indian conditions where agricultural waste such as crop stalks can be used effectively in such a stove.
How about rice hulls instead of puffed rice? And put a u-shaped piece of sheet metal upside down in the cleanout tunnel extending from just past the edge of the cleanout tunnel all the way through to the heat riser taking up about 1/3 of the height of the cleanout. The key piece is the top of the U which separates the primary combustion from the secondary air until they mix in the heat riser. The wood from the feed tube will sit and burn on top of the sheet metal. Block the cleanout so that only the part under the sheet metal U is open. This will allow secondary air to pass under the primary combustion zone and preheat the secondary air with heat that would conduct into the ground under the stove. Hotter secondary air react faster to insure complete combustion before leaving the stove.
Yes, the sheet metal secondary airflow is a good idea. The issue is we are using, as much as possible, locally available found materials in India so as to make this a zero cost option. Rice hulls can also work, its just about putting in some kind of granular biomass that will leave little pockets of air trapped in the clay after it's burnt out.
Russell Collins how about the second doughnut in the heat riser having a vortex slot cut into it so air swirls in the same direction as the vortex generated by combustion gases. This would pull outside air directly into the riser and mix it well with the primary airflow. The slot doesn’t have to be the full height of the doughnut. And then add a brick the height of the doughnuts on the outside where a piece of slate could rest so you can partially or fully cover the secondary air slot. That would make the stove entirely metal free.
In The 4 -5 donut riser. While joining then we can put 3 - 4 pieces of 4 inch small diameter pipe ( like a steel straw)inbetween each joint , so to prmote 3° air mixing in riser and also further addind spped to twister. Steel tube will heat up and such air and inject it like 2° pipe does. But from multiple small openings.
@@DarshanPatel-rs5vc I think I get what you're saying and if so, yes its definitely worth a try. You will want enough metal exposed in the inner side to allow the air to preheat before injecting into the swirling gas mix, otherwise it might have the effect of cooling the gas flow in the riser. You can email me at admin@rocketmandesigns.com
I guess if you wanted to try this at home you could try using rice bubbles or popcorn? And does the eccentrically placed Venturi work much better than a central one which gives dual vortices?
Yes... in fact any kind of smallish granular light weight bio matter can be used in place of the puffed rice. That just happened to be the most easily available product we could source in that location, and its readily available in most parts of India where we are doing this work. Regarding the vortex / venturi effect... this is quite important and definitely improves the effectiveness over a central entry port. The reasons for this are due to increased turbulence created by spinning the hot gases, and increased duration in the burn tube by rotating the gases around the sides of the tube rather than letting them rush straight to the top. This is more important in our shorter / lower height versions where we use only 3 donuts for the riser, as this is more user friendly for pot height (when the cook is sitting low to the floor as they typically do). Over the last 2 years we have improved on this design slightly (having now trained over 1000 people how to make these cookstoves). More details about this can be found here: www.smokelesscookstovefoundation.org
Actually we haven't tested against a double vortex, if that were achieved it might be as effective in the taller versions. I think with the lower height models we are now focussed on (around 15" riser height) the single vortex gives the benefit of an extended flame path as it wraps around the side of the tube. This is not well demonstrated in this particular video, I will try to load a better video showing this.
What I read on the rocket stove forums is that a single vortex leads to faster and more laminar flow, less mixing of the gases, and a faster exit from the riser. The latter would be advantageous with a short riser as you need to maximize the draft. A dual vortex as seen in centrally placed ports creates more mixing and turbulence, and slower exit from the riser, with less draft. But the proof is in the eating.
Yes, given the low riser the single vortex works for us very effectively. I haven't done extensive research into the double vortex, but I can say for sure that the single works well.
@@Rocketmandesigns Thank you I may need this information to keep myself warm in a rocket mass heater with nothing in my pockets except my pocketknife if I'm forced off my property by natural disaster, man-made disaster, my own government or even my hungry neighbors because of inflation driven starvation
I noticed that the stick feeder is not the same in distance as well as the inlet pipe is not the same size does it works the same? I want to build one but I don't know which one is better,
In general it is a basic rule of thumb to keep the airflow through the system all the same, but in practice I find that some variation does not seem to effect the performance. I have a tendency to make the stick feeder hole (lower pot hole) larger than the riser hole, for practical purposes (EG, riser at 6" and lower pot hole at 8") and this still works very well. You can find more detailed illustrations of the build process here: himalayanrocketstove.com/scr-steps/
@@Rocketmandesigns thank you for the reply sir, iwll just keep on reading comments in this video to know more about it I'm also started making one just waiting to dry my mud doughnut,
The Chulha is just the core rocket riser for cooking on, whereas the Eco1 Rocket Stove has a box around the riser to trap heat and radiate to the room. Different purposes, clay chulha is for cooking, Eco1 is for space heating.
can we use Indian Cowdung Gobar or Coal as a fuel instead of Wood because coal is easily available in cities but Cowdung and Wood is very hard to find.
Absolutely wonderful and well put together video and stove Russell. I will try this in the village. Could you tell me, do the burn tube doughnuts have to be stacked 5 high or can it be lower or higher? Also can a chimney flue be added as well on the burner some where?
Actually our team has been experimenting with the height, as this is the most critical aspect for usability for the cook, and it can work with as few as 3 donuts high (3x5" = 15" H) but it will work better with a bit more, such as 18 - 20" height. You can experiment and try making the donuts smaller (eg 4" high) and try for 16" as an example. As long as you have enough suction up the riser to pull the air and smoke through and also long enough time inside the tube for the smoke to burn.
We have experimented with as few as 3 donuts (around 15"), which is a good height for a typical village home kitchen. There are some adjustments that can be done to make sure you are getting the optimal burn for a low height burn riser, which involve the 2ndary air feed, creating turbulence with the "vortex" funnel and making sure the fuel feed is close to the riser. You can email me on russell@himalayanrocketstove.com if you want more details about this.
Thanks for the reply Russell, much appreciated. Your stove is simple to make and the best I have seen compared across the youtube, beating even the most advanced and technical ones in function. The next time I go abroad into the village I'll experiment and try teaching the locals who I know are not aware of this at all and they use the old methods of burning more wood and creating lots of smoke. It will also help me. I will try filming/taking pictures to let you know how it went.
It can work indoors, but preferably in a well ventilated location as there is still exhaust gases and some smoke even with the best smokeless cookstove. It is better than a normal fire indoors, but it is not same as gas or electric.
Dear Russell Sir I am from Assam India very much eager to obtain your Rocket Stove but I am not able to obtain due to insufficient money. please send me at lower price.For which act of kindness I will be ever grateful to you. Thanks.
Dear Rita, I am not sure if you watched this video, but there is no cost to you. Simply make the rocket stove using the clay as shown in the video. IF you are talking about our Himalayan Rocket Stove products, then we do have a new program rolling out soon with lower cost heating units. Please contact me on admin@himalayanrocketstove.com for more information.
Russell spent a lot of his time and energy into this system of Smokeless Stove idea and in this initiative he shows how to implement his learnings into practical solutions. It's very humbling to see someone in his position taking up such initiatives to help not just rural Indians but people across other developing nations. Thanks Russel for sharing all your videos and doing a cracking Job! Very grateful for your efforts.
Hi Ankit, that's very kind of you and thank you for your words of appreciation. I can't take much credit for this project as it involves many people, especially my good friend Nitisha Agrawal in Mumbai who is director at the Smokeless Cookstove Foundation who is actively involved in sharing this work to many others in the field.
@@Rocketmandesigns Of course this is a part of a larger initiative and it takes many to translate these technological solutions into people's lives. Having said that, I saw other videos where your share evolution of the Himalayan Rocket, that took signicant effort and time so I thought it say thank you on behalf of tech-minded people who appreciates when a well tuned technological solutions translates into normal lives to bring about real positive change 👍
Thanks a lot for delivering such a wonderful idea Sir. I did make it and and it's working like you mentioned in the video. High fuel efficiency blended with completely smokeless performance is its USP.
THANKS AGAIN SIR. 🙏
Hi Ravi, thanks for your feedback. I'm very glad you made it yourself and saw how it works!
Excellent easiest design for the rural habitat to make it by low cost available resources. This a combination of Downdraft, Gasification, vortex flame & Rocket action. If some one understand the principles of its function, can make the stove at any shape.
Thanks Russel for helping me to build a rocket stove for a friend for his kitchen. Its easy and interesting how you collected all materials from nature around and eco friendly. I am encouraged by your method. Regards from Northeast Assam, India
Great to hear from you and I'm very happy to hear you are building your own smokeless chulha!
Pal, that's wonderful, just add a little bit of limestone mix with the rest of the ingredients that you make to build the stove and the heat will not escape.
Charcoal could be used to replace the puffed rice for free. I know people who have used charcoal in ceramics to create a more insulative material.
Yes, this is a great idea... I am now working with small granular char from coffee grounds and sawdust.
Well put together video showing how easy this is to construct. Will take this with me when I go to Khotang region next week.
Great... happy to see these ideas getting spread around!
Innovative use of puffed rice for insulation. Great idea, especially for Indian conditions where agricultural waste such as crop stalks can be used effectively in such a stove.
How about rice hulls instead of puffed rice? And put a u-shaped piece of sheet metal upside down in the cleanout tunnel extending from just past the edge of the cleanout tunnel all the way through to the heat riser taking up about 1/3 of the height of the cleanout. The key piece is the top of the U which separates the primary combustion from the secondary air until they mix in the heat riser. The wood from the feed tube will sit and burn on top of the sheet metal. Block the cleanout so that only the part under the sheet metal U is open. This will allow secondary air to pass under the primary combustion zone and preheat the secondary air with heat that would conduct into the ground under the stove. Hotter secondary air react faster to insure complete combustion before leaving the stove.
Yes, the sheet metal secondary airflow is a good idea. The issue is we are using, as much as possible, locally available found materials in India so as to make this a zero cost option. Rice hulls can also work, its just about putting in some kind of granular biomass that will leave little pockets of air trapped in the clay after it's burnt out.
Russell Collins how about the second doughnut in the heat riser having a vortex slot cut into it so air swirls in the same direction as the vortex generated by combustion gases. This would pull outside air directly into the riser and mix it well with the primary airflow. The slot doesn’t have to be the full height of the doughnut. And then add a brick the height of the doughnuts on the outside where a piece of slate could rest so you can partially or fully cover the secondary air slot. That would make the stove entirely metal free.
Russell Collins and sorry for all the “what about this” stuff. I am an engineer and can’t help but tinker.
bro, if you're talking about secondary air i think he done it in 4:35. that's the use of the pipe he put.
Can u explain more about u shape sheet ?
Can we add 3 -4 small steel straw pieces through riser for 3° air ?
I'm not quite sure what you mean... can you explain more?
In The 4 -5 donut riser. While joining then we can put 3 - 4 pieces of 4 inch small diameter pipe ( like a steel straw)inbetween each joint , so to prmote 3° air mixing in riser and also further addind spped to twister. Steel tube will heat up and such air and inject it like 2° pipe does. But from multiple small openings.
I can share the drawings if u give me your email adress.
@@DarshanPatel-rs5vc I think I get what you're saying and if so, yes its definitely worth a try. You will want enough metal exposed in the inner side to allow the air to preheat before injecting into the swirling gas mix, otherwise it might have the effect of cooling the gas flow in the riser. You can email me at admin@rocketmandesigns.com
I guess if you wanted to try this at home you could try using rice bubbles or popcorn? And does the eccentrically placed Venturi work much better than a central one which gives dual vortices?
Yes... in fact any kind of smallish granular light weight bio matter can be used in place of the puffed rice. That just happened to be the most easily available product we could source in that location, and its readily available in most parts of India where we are doing this work. Regarding the vortex / venturi effect... this is quite important and definitely improves the effectiveness over a central entry port. The reasons for this are due to increased turbulence created by spinning the hot gases, and increased duration in the burn tube by rotating the gases around the sides of the tube rather than letting them rush straight to the top. This is more important in our shorter / lower height versions where we use only 3 donuts for the riser, as this is more user friendly for pot height (when the cook is sitting low to the floor as they typically do). Over the last 2 years we have improved on this design slightly (having now trained over 1000 people how to make these cookstoves). More details about this can be found here: www.smokelesscookstovefoundation.org
Interesting that you have found that a single vortex works better than a double one. Any testing on emissions ( g/kg ), and CO production?
Actually we haven't tested against a double vortex, if that were achieved it might be as effective in the taller versions. I think with the lower height models we are now focussed on (around 15" riser height) the single vortex gives the benefit of an extended flame path as it wraps around the side of the tube. This is not well demonstrated in this particular video, I will try to load a better video showing this.
What I read on the rocket stove forums is that a single vortex leads to faster and more laminar flow, less mixing of the gases, and a faster exit from the riser. The latter would be advantageous with a short riser as you need to maximize the draft. A dual vortex as seen in centrally placed ports creates more mixing and turbulence, and slower exit from the riser, with less draft. But the proof is in the eating.
Yes, given the low riser the single vortex works for us very effectively. I haven't done extensive research into the double vortex, but I can say for sure that the single works well.
Dear Collins, Will you tell us how to make this mud stove with double outlet?
have a look at these diagrams to see how we set up a low and high cooking position with a single chulha. www.himalayanrocketstove.com/scr-steps
Russell Collins, thanks.
Sin pretextos para ahorrar leña y esfuerzo
I wonder if small pieces of charcoal would do the same as puffed rice
Yes, I would think so
@@Rocketmandesigns Thank you I may need this information to keep myself warm in a rocket mass heater with nothing in my pockets except my pocketknife if I'm forced off my property by natural disaster, man-made disaster, my own government or even my hungry neighbors because of inflation driven starvation
I noticed that the stick feeder is not the same in distance as well as the inlet pipe is not the same size does it works the same? I want to build one but I don't know which one is better,
In general it is a basic rule of thumb to keep the airflow through the system all the same, but in practice I find that some variation does not seem to effect the performance. I have a tendency to make the stick feeder hole (lower pot hole) larger than the riser hole, for practical purposes (EG, riser at 6" and lower pot hole at 8") and this still works very well. You can find more detailed illustrations of the build process here: himalayanrocketstove.com/scr-steps/
@@Rocketmandesigns thank you for the reply sir, iwll just keep on reading comments in this video to know more about it I'm also started making one just waiting to dry my mud doughnut,
one question in my mind that you made this chulha in round shape .
why not in square like eco 1,2,3
The Chulha is just the core rocket riser for cooking on, whereas the Eco1 Rocket Stove has a box around the riser to trap heat and radiate to the room. Different purposes, clay chulha is for cooking, Eco1 is for space heating.
agreeable sir ji
can we use Indian Cowdung Gobar or Coal as a fuel instead of Wood because coal is easily available in cities but Cowdung and Wood is very hard to find.
Cowdung Gobar is fine, coal should be fine but I have not tested it myself.
Awesome! :D
Absolutely wonderful and well put together video and stove Russell. I will try this in the village. Could you tell me, do the burn tube doughnuts have to be stacked 5 high or can it be lower or higher? Also can a chimney flue be added as well on the burner some where?
Actually our team has been experimenting with the height, as this is the most critical aspect for usability for the cook, and it can work with as few as 3 donuts high (3x5" = 15" H) but it will work better with a bit more, such as 18 - 20" height. You can experiment and try making the donuts smaller (eg 4" high) and try for 16" as an example. As long as you have enough suction up the riser to pull the air and smoke through and also long enough time inside the tube for the smoke to burn.
We have experimented with as few as 3 donuts (around 15"), which is a good height for a typical village home kitchen. There are some adjustments that can be done to make sure you are getting the optimal burn for a low height burn riser, which involve the 2ndary air feed, creating turbulence with the "vortex" funnel and making sure the fuel feed is close to the riser. You can email me on russell@himalayanrocketstove.com if you want more details about this.
Thanks for the reply Russell, much appreciated. Your stove is simple to make and the best I have seen compared across the youtube, beating even the most advanced and technical ones in function.
The next time I go abroad into the village I'll experiment and try teaching the locals who I know are not aware of this at all and they use the old methods of burning more wood and creating lots of smoke. It will also help me.
I will try filming/taking pictures to let you know how it went.
I guess having more height is key in allowing the smoke to burn.
That would be wonderful... and you can check the instructions as diagrams here: himalayanrocketstove.com/scr-steps/
does it work indoors?
It can work indoors, but preferably in a well ventilated location as there is still exhaust gases and some smoke even with the best smokeless cookstove. It is better than a normal fire indoors, but it is not same as gas or electric.
This is awesome! :)
Hi Dear Collins
Adhi manithan vazhikaikku kondupona modikku nandri make india digittal ex ex
I'm sorry I don't understand your language.
Dear Russell Sir I am from Assam India very much eager to obtain your Rocket Stove but I am not able to obtain due to insufficient money. please send me at lower price.For which act of kindness I will be ever grateful to you. Thanks.
Dear Rita, I am not sure if you watched this video, but there is no cost to you. Simply make the rocket stove using the clay as shown in the video. IF you are talking about our Himalayan Rocket Stove products, then we do have a new program rolling out soon with lower cost heating units. Please contact me on admin@himalayanrocketstove.com for more information.