I very well understand the frustrations that can be had by trying to achieve ones quality and efficiency at work in the shop at home. It's nice to have every tool needed at your fingertips at the job, but wish you owned them also. I have a few about your design concepts, as I am planning my second boiler build. And a few ideas on the controller I would like to compare thoughts with you. But first ill start with asking if you have any efficiency calculations yet? I would be happy to help in that department so everyone here can use the methods when designing their own burner. I just have to look back through and try to find all the necessary info. Fan cfm, fire tube size, secondary burn chamber dimensions. You have the temps in your video I recall that. The stack temp is the only one I can't remember seeing...
Yeah I do have most of what I need in my own shop.Just need to get a shear,leaf brake,slip rolls.
No I dont have any efficiency calculations on it yet.I know it does seem to sip the wood from what I experianced last year.
If I remember correctly my fan is 500 cfm.The heat exchanger tubes coming from the refractory chamber are 3" diameter.There are six of them.I believe they are approximatly 3' long if I remmeber correctly.The dimensions are probably in a post somewhere back.
I will have to go back and measure the tunnel size.I think each tunnel is about 4.5" tall maybe approximately 7" wide now this is off the top of my head.
I never did get an exhaust stack temp last year.I started to several times but just never did.
I am working 12 to 16 hours the next few days so I will try to re check those dimensions sometime.
I just cut my feeder line to my house in half ,and I am in the process of running the lines to the shop .Then I have to rehook the house back up.I made a S.S. wall mount to run the feeder lines into the the wall of my shop.Plus it also has a 1/2" pipe nipple welded through it to allow the ability to have an air line on the back of the shop.I will have to get pics off my cell phone and post them.