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Wood furnace

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  • Wood furnace

    I started it today after scrounging parts and a core old stove that has seen its share of modifications from several different installations. I didnt want to start from scratch so I am adapting and took the plasma to it to make changes, spent an hour with a grinder and am getting ready to retro fit the features I need, enlarge the door, add some baffles and put it into a jacket for forced hot air outside wood burner. These are some of the core parts, junk laying on top of the stove.
    Attached Files

  • #2
    Starting to get cold here and I've been thinking of the same thing to help suplement the LP heat in my shop. Keep us posted on your project....

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    • #3
      I cut the scrap off and opened the door height, now trying to come up with a baffle design that I can install before I rebuild the door front. I am wanting the hot exhaust to run down the full length of the top plate before it exits. The baffle will be like a channel or box tubing about 2x12 about 20 inches long.
      Attached Files

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      • #4
        looks like you are off to a good start.
        will it be inside your home or for the shop??
        how thick is the fire box ??
        i been playing with the idea of making a burner to heat water to circulate as a heat source. still need to do a lot of info gathering be for i attempt it though. lots of unanswered questions be for i start.

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        • #5
          Its for my house, it will sit outside and duct into the central. This is a really simple hillbilly version. I live in a mobile home (was cheap to free) and have about 8 ft run to make it to the raceway. I am going to have to cut a hole in the frame to duct thru to make it direct. I was going to build an addition and incorporate all this in with a utility room but an going to do shortcut version for the time being, ran out of money and ambition.
          Last edited by Sberry; 10-24-2008, 11:31 AM.

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          • #6
            i just added an 8'X12' addition to my trailer this summer for my 3 year old to have a room. its the 2nd time i have done this, i'm running out of trailer.
            i was thinking an outside boiler then pipe the hot water into the house to help off-set the $ of the heating oil as its killing me.
            i just ran out of time and $$ to get it done this summer, so its a next year thing i guess. unless i build it in the shop and attach it later.

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            • #7
              I am seeing if I can find the pics from the progress. I need it working, the cold is coming and I cringe when the gas unit comes on. Camera is giving me fits,,, be back.
              Last edited by Sberry; 11-11-2008, 12:32 PM.

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              • #8
                Ok, getting ready for the insulation. Am going to add the fan thermostat yet, a thermo from a water heater. Ist pic was jacking the baffle plate in.
                Attached Files

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                • #9
                  I love it! i'd rather spend my money on a cool wood stove knowing the oil company won't be reaching into my pocket, i just wish miller would make a trailblzer that could run on wood i'd mount it on a stanley steamer, and drive by the gas station with it running, laughing....

                  Looks good so far! keep us posted

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                  • #10
                    Originally posted by fun4now View Post
                    i just added an 8'X12' addition to my trailer this summer for my 3 year old to have a room. its the 2nd time i have done this, i'm running out of trailer.
                    i was thinking an outside boiler then pipe the hot water into the house to help off-set the $ of the heating oil as its killing me.
                    i just ran out of time and $$ to get it done this summer, so its a next year thing i guess. unless i build it in the shop and attach it later.
                    Hey Fun,
                    This is extremely common in New Zealand.It is called a "wet back". All you need is a wood stove and you incorporate a supply line that is in contact with the wood stove and an insulated holding tank similar to the hot water heater tank you now have.
                    Thanks,
                    Nick
                    Attached Files

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                    • #11
                      they putting the coils inside the heat chamber ?? i would think a buffer plate would be needed. been trying to find time to design some thing that would allow heat to the bottom of the tank to heat large quantities at one time. like heating a 30 gal. tank the them pumping from there to the house. using a small coil to heat water that then heats a tank some where else to be used for heating seems like its just adding a process and reducing the heat up time. i suppose it could also reduce the cool down time too??? i have to finish up my son's new room first then i'll put more time into it.

                      see pic for my first idea.
                      Attached Files

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                      • #12
                        I thought about something similar but didn't want to get involved in the extensive plumbing it would involve at this location. I could open the can back up and add a coil at some time in the future if I incorporate this into an addition.
                        Last edited by Sberry; 11-11-2008, 06:08 PM.

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                        • #13
                          I keep thinking of making something similar with some of the large bore pipe I have laying around, my questions are this:

                          1) What is that you covered the stove with? Insulation? What type? Is that all the insulation you intend to use?

                          2) Did you build a case around the stove for heat exchange? I've thought about a firebox enclosed in an outer shell, the outer shell with the blower and ducted to the inside.

                          3) You're ducting this into the existing central heat ductwork? What are you doing about air return?

                          JTMcC.

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                          • #14
                            I have a couple ports in the heat/return raceway underneath my trailer from a central air unit I used elsewhere, the return has filters in it and am going to make some adapters this week to connect it. The insulation on the outer jacket is not on yet, I will post it up when I finish it. I am going to use 3 1/2 inch batt from building project with fire resistant paper on it.
                            The core of the stove is actually 20 inch pipe I got from a job 20 yrs ago, 1/2 wall and I cut it length ways and added about 10 inches of plate to make it oblong. Put 1/4 plate top and bottom. I has the stove, was used in a couple garages and I adapt it for this project so I didn't have to build from scratch.
                            2) Did you build a case around the stove for heat exchange? I've thought about a firebox enclosed in an outer shell, the outer shell with the blower and ducted to the inside
                            Yes, what you see in the pic is the containment shell, I am working on the blower now, a blower from one of the dryers I used for the containment shell. I am using the bottom half of an upper thermostat from a water heater for a switch loop to turn the blower on when it comes up to temp. I have to pipe the hot (I will insulate the pipe) about 8 or 10 ft to the hot duct of the trailer and the return is about 3 ft away, will use common dryer flex tube for some of it.

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                            • #15
                              I don't know if you can tell the unit is oblong from the second pic of the thread, there was a side air intake but I plug that off now and I enlarge the door to make it easier to fill. I am going to fashion some sheet over this to keep the weather off the insulation. Its going to sit under a carport kind of thing.

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