Hey Everyone! Thanks again for taking the time to watch. I hope you found the vid interesting. If you wanna check out more of my rocket stove build check out Part 1 here: ua-cam.com/video/m5EFKcG2zuI/v-deo.html
Hello mate , I have enjoyed your videos, nice to see someone experimenting. I made something similar to heat the kids pool and I would like to make some suggestions. The rocket stove system is to small, the fire box would benefit from being bigger otherwise its to time consuming. The copper pipe in the heat riser is insulated by the sand and take the top off of the chimney, it is just restricting the air flow. If you want to guard against sparks put a barrel over it like a traditional build. I am sorry if this comes across a critical it is not at all how I want it to be taken. I admire what you are doing and it has the makings of being a great project. Please keep making the videos and nail this project. All the best Craig
Hi Craig. It doesn't come across as critical, I really appreciate the helpful feedback. I was thinking about the firebox, your comment confirms its! I am hoping to get my hands on some clay soon, so will hopefully be able to mold something with better shape. With the copper pipe I was worried about heating it too much whilst not having the thermosyphon set up - water not moving -> pipe will heat up too much. Someone else mentioned this and I think I will change the design as you suggest now I have it working. Thanks again for your feedback. Cheers Tom
@@GetMeOffGrid_ Tom you could consider a small water pump, solar powered to a battery, the project is getting bigger but it would be more efficient and the movement of water would keep the copper cooler if it is direct contact with fire in the riser tube. Good luck
Nice build! My two pennies on it: Install a one way valve on the hot water side This allows heat and pressure to build in the copper coil, this will push the flow back to your tank. Initially this will turn the hot water into steam, but if you have both outlets submerged in the tank this won't be a problem. This in turn will pull cold water from the bottom pipe by the vacuum in the copper pipe and with enough velocity it will maintain a decent circulation. Also insulating the hot water pipe will help keep the heat all the way to the tank during the night when the fire dies down. Anyway, look forward to future videos if you make anymore improvements!
Hi, thanks very much. Great suggestions. I was thinking of increasing the size of the tank and having the hot water inlet half way up. Hopefully soon I will be able to make a permanent one from cob that I can include everyones suggestions. Cheers
Good to see you using mains drills, rather than many who use (Congo destroying) Battery Drills, that seem to be disposable as many don’t bother or can’t get replacement batteries.
I'm a fan of both tbh. Mains drills are great where you can easily get power. I get the issue with the batteries though, it is annoying to get replacements.
I'm envious of effort expended. The idea of the rocket is to insulate the burn and the riser to get a hot and clean burn. Sand has too much thermal mass. Compress the coil to the top and line the lower half with Ceramic Fiber Blanket or use fire bricks then you have half a chance.
Thanks Mathew! I appreciate the advice. To be honest I have given up on the idea of using a rocket stove to heat water. For my purposes, heating my digester, it turns out not to be the best option. Cheers
Better with the shorter lines, but you need the hot outlet at the top of the rocket stove to only go upward to the top port on the tank(should probably be on the same side of the Tank as the bottom port). The tank needs to be filled above that top port. You cannot just run the line in and down into the water as this will trap air, and any air kills siphon flow. You want the top port to go in sideways like the bottom port, and if you fill above this port, all the air will clear itself as long as none of the lines droop. I don’t know how much copper you used, but a stove that size should have 15 or so liters of water near to boiling in a half hour or less. A good way to visualize the flow is with a tall pan and a butane torch. Fill the pan with water and apply the torch flame to a bottom edge. A drop of food coloring on the side opposite where you are applying the heat will help show you the flow.
Hey Everyone! Thanks again for taking the time to watch. I hope you found the vid interesting. If you wanna check out more of my rocket stove build check out Part 1 here: ua-cam.com/video/m5EFKcG2zuI/v-deo.html
Hello mate , I have enjoyed your videos, nice to see someone experimenting. I made something similar to heat the kids pool and I would like to make some suggestions. The rocket stove system is to small, the fire box would benefit from being bigger otherwise its to time consuming. The copper pipe in the heat riser is insulated by the sand and take the top off of the chimney, it is just restricting the air flow. If you want to guard against sparks put a barrel over it like a traditional build. I am sorry if this comes across a critical it is not at all how I want it to be taken. I admire what you are doing and it has the makings of being a great project. Please keep making the videos and nail this project. All the best Craig
Hi Craig. It doesn't come across as critical, I really appreciate the helpful feedback. I was thinking about the firebox, your comment confirms its! I am hoping to get my hands on some clay soon, so will hopefully be able to mold something with better shape. With the copper pipe I was worried about heating it too much whilst not having the thermosyphon set up - water not moving -> pipe will heat up too much. Someone else mentioned this and I think I will change the design as you suggest now I have it working. Thanks again for your feedback. Cheers Tom
@@GetMeOffGrid_ Tom you could consider a small water pump, solar powered to a battery, the project is getting bigger but it would be more efficient and the movement of water would keep the copper cooler if it is direct contact with fire in the riser tube. Good luck
Good shout, as you say that would be another level. If the system was going to be any bigger I think that would have to be the way to go. Cheers
Nice build! My two pennies on it:
Install a one way valve on the hot water side
This allows heat and pressure to build in the copper coil, this will push the flow back to your tank.
Initially this will turn the hot water into steam, but if you have both outlets submerged in the tank this won't be a problem.
This in turn will pull cold water from the bottom pipe by the vacuum in the copper pipe and with enough velocity it will maintain a decent circulation.
Also insulating the hot water pipe will help keep the heat all the way to the tank during the night when the fire dies down.
Anyway, look forward to future videos if you make anymore improvements!
Hi, thanks very much. Great suggestions. I was thinking of increasing the size of the tank and having the hot water inlet half way up. Hopefully soon I will be able to make a permanent one from cob that I can include everyones suggestions. Cheers
Good to see you using mains drills, rather than many who use (Congo destroying) Battery Drills, that seem to be disposable as many don’t bother or can’t get replacement batteries.
I'm a fan of both tbh. Mains drills are great where you can easily get power. I get the issue with the batteries though, it is annoying to get replacements.
I'm envious of effort expended. The idea of the rocket is to insulate the burn and the riser to get a hot and clean burn. Sand has too much thermal mass. Compress the coil to the top and line the lower half with Ceramic Fiber Blanket or use fire bricks then you have half a chance.
Thanks Mathew! I appreciate the advice. To be honest I have given up on the idea of using a rocket stove to heat water. For my purposes, heating my digester, it turns out not to be the best option. Cheers
Better with the shorter lines, but you need the hot outlet at the top of the rocket stove to only go upward to the top port on the tank(should probably be on the same side of the Tank as the bottom port). The tank needs to be filled above that top port. You cannot just run the line in and down into the water as this will trap air, and any air kills siphon flow. You want the top port to go in sideways like the bottom port, and if you fill above this port, all the air will clear itself as long as none of the lines droop. I don’t know how much copper you used, but a stove that size should have 15 or so liters of water near to boiling in a half hour or less.
A good way to visualize the flow is with a tall pan and a butane torch. Fill the pan with water and apply the torch flame to a bottom edge. A drop of food coloring on the side opposite where you are applying the heat will help show you the flow.
This is why I love YT! Thanks for the advice. Best explanations yet! Cheers
If your rocket since is working properly, you should have no smoke
Thanks. Yeah the air intake wasn't big enough. Working on a new version which should be better