Stopping metal burnout ?

[flyman]

I,m wanting to build a rocket stove heater for my 50x30  SF work shop. I have been using a conventional wood stove, & it works Ok. 
But it takes for ever to get it up to heat. I have read so much on the net I have be come cross eyed. The one worry I have is being metal 
will it burn up in a short time, as many have exsperance. I was thinking of lining the burn chamber & flue with hi temp ceramic fiber board. What do you guys think. I see where liberator rocket stove are now doing that. What are your thoughts. As you know when we shell out a 
bunch of $$ & work I want it to be right. I,m a retired machinist welder metal worker so that is my skill set. I,m in no way a brick or 
masonry guy. So that is why my plan is not directed in that way. Hope you guys can steer me down the right path.  

         Fly an🪰

[martyn]

What sort of heater do you plan to build, it just for radiant heat or stored heat as well?
Metal in the direct flame path is not going to work but anywhere else it will be ok.

[masonryrocketstove]

Have you seen Peter's stacked metal barrel heat exchanger design he uses in his workshop on batchrocket.eu?

From what you describe and the problem being a workshop that takes too long to heat up, I think an insulated rocket core with stacked metal barrel bell would best fit those needs.

heat storage mass generally works better in a well insulated space (like a home) that you need to keep warm 24/7, whereas rapid heat exchange with very little storage mass works better for workshop spaces that only need to be heated while you work in them, and need to heat up rapidly in the morning after being cold all night.

Insulating refractory like ceramic fiber board is used to keep burn temps high in the burn chamber for complete combustion, at temps that will destroy metal. But in the downstream flues after the combustion zones, insulation will work against the goal of heat exchange. Insulating the flue would just mean that heat is lost up the chimney without ever being delivered into the room.

[fiedia]

Well, building metal bell without bricks inside will probably bring water condensate issues.

Water was dripping from my metal doors before I insulated them with layers of brick + wool on the hot side.

Ericaus had some issues of water dripping from his metal bell: donkey32.proboards.com/thread/1890/inch-batch-bell-rocket-heater?page=6 look at Satamax post on the page bottom.

[flyman]

I,m sorry I did not say above I plan building a rocket stove. That is why I was concerned about burn out in the fire chamber.

Fly🪰