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Home Made / Re: New OWB... on a budget. part 2
« on: December 13, 2012, 06:29:48 PM »
havent posted here in a bit but i finally got her running. the nozzle on the right side is a bit clogged but i think i have it figured out. could use some constructive criticism.
http://youtu.be/7MQ80_DMiCI
http://youtu.be/7MQ80_DMiCI
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Home Made / Re: New OWB... on a budget. part 2
« on: October 19, 2012, 05:03:57 PM »
I finished my air distribution box and did a few test runs, very happy with the end product. takes over two mins for the door to open so i am working on some way to delay the fan a bit. hind sight is 20/20 but i should have gotten an actuator that had an end switch so i could make and break contacts for the fan.
i also cut out a small piece of exhaust tube and welded it to a rectangular pipe for the primary air. i plan on cutting holes or slots into the bottom to feed the coals with some nice fresh air. i will fabricate the pipe for the secondary once i have the firebrick in place.
and finally i put together the stack hood and figured out how to incorporate the bypass flapper.
now that i have the boiler pressure checked with air and has held water for two days its time to start closing this thing up.
this is my first gasser, there are a lot of things i would change but as my day would say "the cake is already baked" so i will finish it and start planning on a new one maybe. haha
i also cut out a small piece of exhaust tube and welded it to a rectangular pipe for the primary air. i plan on cutting holes or slots into the bottom to feed the coals with some nice fresh air. i will fabricate the pipe for the secondary once i have the firebrick in place.
and finally i put together the stack hood and figured out how to incorporate the bypass flapper.
now that i have the boiler pressure checked with air and has held water for two days its time to start closing this thing up.
this is my first gasser, there are a lot of things i would change but as my day would say "the cake is already baked" so i will finish it and start planning on a new one maybe. haha
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Home Made / Re: New OWB... on a budget. part 2
« on: October 19, 2012, 04:54:12 PM »
haven't posted here in a bit but here are some pics and i will try to update since the last post.
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Home Made / Re: New OWB... on a budget. part 2
« on: October 04, 2012, 03:51:08 AM »
Ok i have managed to weld up most of the tank and the air tubes are figured out. Going to finish the air tubes and start working on the front plates and doors. heres a better picture of my exchanger and a picture of them before they were welded into the outer tank.
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Home Made / Re: New OWB... on a budget. part 2
« on: September 26, 2012, 04:11:54 PM »
until i figure out how to resize these pictures this is it.....it could take a while. 
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Home Made / Re: New OWB... on a budget. part 2
« on: September 26, 2012, 03:58:09 PM »
ok here are a couple pics of the exchanger installed, and a shot of the exchanger tubes and the future location of the bypass pipe. I'm bringing this hunk of metal to a guy i know that has an exhaust bender this weekend. I'm hoping to get some input as to where others have installed air tubing with success.
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[attachment deleted by admin]
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Home Made / Re: New OWB... on a budget. part 2
« on: September 24, 2012, 08:30:01 PM »
oh and i am starting to think about how I'm going to introduce air into the boiler for my primary and secondary burn. i planned on adding air under the fire and on the lower end of the wood and I'm on the fence as to where I'm going to blow air into the secondary. maybe run it on top in the chamber and then elbow it down into the floor of the firebox. any suggestions would be appreciated.
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Home Made / Re: New OWB... on a budget. part 2
« on: September 24, 2012, 08:22:47 PM »
yes i am using an old 500 gallon oil tank as the water vessel and a cut down 275 as the burn chamber. i am insulating the burn chamber with refractory cement and i plan on using the flue liner as my secondary chambers. i know this is not the best way to build a wood boiler but i am using things that i have found here and there 
, basically its a guinea pig and when this one craps out i will have a better idea of what i like and dislike.
ok i finally got the burn chamber into the water vessel. i used a cherry picker, a few spare hands and about 4 hrs. some things didn't line up so we had to use the plasma cutter and kept whittling away until we got it to fit satisfactorily. started welding it in tonight and i have to say I'm getting pretty excited to make this kind of progress.
i have pictures and will post them in the next few days.
, basically its a guinea pig and when this one craps out i will have a better idea of what i like and dislike. ok i finally got the burn chamber into the water vessel. i used a cherry picker, a few spare hands and about 4 hrs. some things didn't line up so we had to use the plasma cutter and kept whittling away until we got it to fit satisfactorily. started welding it in tonight and i have to say I'm getting pretty excited to make this kind of progress.
i have pictures and will post them in the next few days.
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Home Made / Re: New OWB... on a budget. part 2
« on: September 22, 2012, 04:01:43 PM »
Ok here they are. i just started welding so that should explain it all. haha The first picture is the tank with three holes cutout. one for the burn chambers, one for a clean out, and the other for the exhaust. The second picture is a tease as to what it will look like in a few weeks, and the last is a shot of the exchangers. I went with 20 1.25" and 4 2" tubes for the transfer tubes. All are just under 5 foot long. I am getting ready (hopefully tomorrow) to get the cherry picker and drop the inner vessel in and tack it all together.
[attachment deleted by admin]
[attachment deleted by admin]
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Home Made / Re: Start of ultra high efficiency gasifier boiler build
« on: September 20, 2012, 07:14:34 PM »
Peacemar...wow! nice work, I'm a bit envious. looking forward to the upcoming posts.
looking forward to the upcoming posts.
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Home Made / New OWB... on a budget. part 2
« on: September 20, 2012, 06:53:44 PM »
Thanks Scott and Jackal for taking the time to give me some input. Jackel i reworked the design and i just couldn't find a way to make a bigger burn chamber so i will let you know how many times a day i have to walk out to the OWB. Scott i am looking at @ 130 gallons of water content and i have recently acquired a large LP tank i may use for water storage. I've been busy at work so not much has progressed until the last week or so. I now have the main and secondary chamber welded together as well as the heat transfer tubes. The water vessel is cut and i am now ready to drop the chambers/exchangers into the 500 gallon tank. I will post my progress as well as some pics in a few days.
Scott i am looking at @ 130 gallons of water content and i have recently acquired a large LP tank i may use for water storage. I've been busy at work so not much has progressed until the last week or so. I now have the main and secondary chamber welded together as well as the heat transfer tubes. The water vessel is cut and i am now ready to drop the chambers/exchangers into the 500 gallon tank. I will post my progress as well as some pics in a few days.
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Home Made / New OWB... on a budget.
« on: March 10, 2012, 04:32:23 PM »
Hey all, i am new to this site and what a surprise to find all this valuable info in one spot. :thumb up: i plan on using some salvaged material i have stumbled upon over the last year or so. I'm in the hvac trade so I'm fortunate to be able to acquire these things for the bubble.
Well basically i plan on building a downdraft gasser, very similar to jackals design. I have a 500 gallon tank(4 ft x 6 ft) for the tank and i was thinking of using the middle part of a 275 cutdown with a secondary attached to it. I am sort of at a standstill because i am unsure the metal will be thick enough. i plan on putting two supports on each side to stabilize the side panels. i am also unsure that a 30 inch deep 30 inch high and 24 inch wide fire chamber is going to be big enough. its sort of a catch 22, make more room for wood but sacrifice your water content. looking forward to hearing any thoughts.
Well basically i plan on building a downdraft gasser, very similar to jackals design. I have a 500 gallon tank(4 ft x 6 ft) for the tank and i was thinking of using the middle part of a 275 cutdown with a secondary attached to it. I am sort of at a standstill because i am unsure the metal will be thick enough. i plan on putting two supports on each side to stabilize the side panels. i am also unsure that a 30 inch deep 30 inch high and 24 inch wide fire chamber is going to be big enough. its sort of a catch 22, make more room for wood but sacrifice your water content. looking forward to hearing any thoughts.
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