This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.

1

Home Made / Tinners Project

« on: November 29, 2011, 06:49:10 PM »

Has anyone ever recorded the fire box inside temp. while at a full burn? How about the gasifier tunnel from the outside? The reason I am asking is that I have the chance to pick up a FREE pc. of 30" dia. x 42" .375 wall 304 stainless pipe. If I were to get this I would be using 1/4" A36 for the ends and tunnel. And 10ga A36 for the water jacket. It would call for the use of 309l wire for the dissimilar metals. After a brief conversation with a mechanical engineer and telling him about the tunnel being lined with fire brick. He thought it would be ok. I told him I would try to obtain the temps for him.

Thanks!
Bob

edited to add: I have decided not to use the stainless at all.

2

Home Made / Blower cfm ?

« on: November 25, 2011, 09:27:44 AM »

Been reading here quite a bit with the intention of possibly building one of these. It would be a gasifier type construction. I feel that I have a fairly decent understanding of things with one exception. I see some of these units are running 50 to 75 cfm blowers while others are running single and two speeds up to 500cfm. Are the smaller blowers being run on gasifiers? And why the two speeds? I would think they would be running on high when calling for heat and off when idling.
I have done some searches and quite a bit of reading. Please excuse me if I have missed something obvious.