Rocket Stove Design Question

I wanted to ask if you can use a curved 90 degree elbow for a rocket stove design? or does it need to be squared 90 degree connections?

I have attached two pictures of some double wall galvanized pipe that I loosely connected to show my concept for a rocket stove. The red line at the bottom of the feed tube will be a metal plate that will close off the airflow from the bottom.

The feed tube is about 6", burn tube 6", riser tube 18"

Metal is doomed!

Satamax Antone wrote:Metal is doomed!

Say more please. I am completely new to this.

Metal as the container for combusting the wood will work great at first, then it will decompose because it can't handle the extreme temperatures created by burning wood and the volatiles which are released.

A Dragon Heater shippable core is made from cast refractory which can handle 2600°F. Metal can't handle continuous exposure to that high of a temperature.

Metal is doomed! You are wasting your time creating a burn tunnel out of metal. But, you will have plenty of company. Look back through the threads on this forum; many of them are from someone who has made a metal rocket stove.

A rocket core see stress that is a cross between a kiln, a forge, and a blast furnace. The high temperature and high flow are extremely hard on materials. Metal will die quickly. Low quality firebrick will die almost as quickly.

R Scott wrote:A rocket core see stress that is a cross between a kiln, a forge, and a blast furnace. The high temperature and high flow are extremely hard on materials. Metal will die quickly. Low quality firebrick will die almost as quickly.

Thanks, this is helpful.

R Scott wrote: Low quality firebrick will die almost as quickly.

What would be considered a good quality firebrick?

Kenneth Geraci :You may want to look at the New Thread posted by Len Ovens, How about a 'Rocket kitchen'!

If any one has a handle on rocket stoves as opposed to rocket mass heaters,RMHs It Would be Kiko Denzer, this is truly a working technology for Haiti, the
man or woman that learns how to do this will never starve, will be helpful to his neighbors, and a tie in with this group will create an indigenous Craft class
that will be self supporting hundreds of years from now!

This will allow for a slow sustainable growth, be locally improved on by generations of self taught craftsmen. Unlike your stove pipe which is too expensive,
must be imported,and can too easily be diverted from you, stollen from end users,and non sustainable ! It is also a very safe technology for a region with
frequent Hurricanes/mud slides/Avalanches and earthquakes !

Also you have an established working relationship with the people at Aprovecho Research !

You were meant to see this - take its simple message to heart ! Big AL !

Late Note : Kiko Denser Posted this information in Feb 2013, He did provide a link to> www.Rechoroket.com again i believe you were meant to see this!