How to build a Super Efficient Outdoor Wood Stove Heater from an Old Propane Bottle

    This project goes over the build of an efficient outdoor wood burning stove heater out of an old propane bottle and some scrap metal from the scrapyard. This stove has secondary burn system that helps in combustion of any unburned smoke or fume inside .Almost little to no smoke coming from the flue pipe.

    The first step is to make sure that the old propane tank is empty. We take the valve at the top by removing the valve protector cage. Fill the tank with water and let it sit for a few hours before we drain the tank and start cutting top and bottom.

    With the help of a hole saw cutter ,we cut 100mm four inch holes at the top and bottom of the tank . The top hole is for the flue pipe to sit in and the bottom hole is for cleaning the ashes out. We also remove the bottom stand too.

    Next, we cut a hole for the door for the stove. This is cut as high up to the top of the bottle . The door is made of chequered plate piece . We fit a rectangular pyrex dish glass piece in the middle of the chequered plate that can withstand high temperature with couple of steel bracket pieces.

    The glass on the door helps us to see how the secondary burn system is working inside the chamber. The door is attached to a frame through hinges.

    The flue outlet on the top the tank is attached through a flange piece with holes. The door handle is made of a socket wrench. The wrench is bolted to the plate and a small metal piece is welded onto to the frame to which the wrench is pulled to close the door

    A deflector plate made of small holes is installed inside the stove on the top . We drill 8mm holes around the top of tank and put dome bolts across them. The deflector pipe sits on these bolts. The deflector plate stop the unburned gases exiting out the flue outlet pipe. This encourages the flame that rises, pass through the deflector plate holes into the secondary burn chamber that helps in better combustion.

    The secondary burn system is made of stainless steel pipes .The air intake section is long enough to get the air coming in to get super heated and move into two sections filled with holes.

    Since not all gases from the wood combust from the primary air intake, the secondary burn pipe ensures that the air gets super heated before exiting the pre-drilled holes and helps burn the unburned gases rising from the fire before exiting the flue pipe.

    The secondary air intake pipe coming out of the firebox is welded on the top of the tank with a flange piece. The primary air intake pipe that goes under the door frame is made of a two inch coupler and threaded damper disc. A small metal piece is welded to the coupler with a hole in the middle. The damper disc screws in through the hole that allows us to close and open the intake .



    RECENT POSTS YOU MIGHT LIKE
    • DIY Video:How to build a Simple Battery Backup Power Station for Emergency Power
      This project goes over the setup of a simple battery bank for your offgrid applications. We use three AGM batteries, and they're about 245 amp hours each.Marine or deep cycle batteries also work. Dont get a car battery.Make sure that the batteries are about same age or they start bringing each other down. The wires are connected through the positive ports and negative ports of each batteries. The positive from the inverter is connected to the positive of the first battery .Negative from the inverter is connected to the negative of the 3rd battery. The battery chargers are from Pros Series DSR.It ramps up the optimum charging voltage. https://www.youtube.com/watch?v=Zxvo3t898xI
    • How to build a Simple Homemade Wind Generator from Old Ceiling Fan ,Microwave Oven Parts ,Old TV Antenna and other free junk
      This project goes over the build of a homemade wind generator built from random junk ceiling fan ,microwave oven transformer ,office chair, an old piece of a TV tower, and some random electrical stuff. The blades are also from an old ceiling fan .It is extended with some wood and fibreglass on it to make it stronger. A scrap piece of pipe is attached as a shaft to the hub of the turbine. An office chair frame which can move freely is welded to the pole/post of the turbine. This is welded to an old TV Tower. 4 magnets are glued on the hub. The frame of an old microwave oven transformer is cut .Its core is exposed and that is welded onto the brackets. The magnets pass over the transformer core and induction takes place creating electric current. We can use that current to charge a battery or to power lights or whatever. A multi transformer setup would generate more power. We hook up a rectifying diode to convert from AC to DC and some capacitors which can even out the voltage and give us direct current. Also a diode to block the current from the battery to go up back up to the generator. This set up can charge small batteries. A piece of sheet metal is welded onto the bracket of the ceiling fan. Four magnets are spaced apart and aligned along their respective poles in north-south directions and glued to the bracket using 2 part epoxy. To generate more wattage from the wind generator ,we use an old 120V DC lawnmower motor. Because we have multiple poles, we have magnets that are really close to the armature, this is a way better motor to use. The only downfall of this is that it has brushes, eventually it's the brushes are going to wear out, you probably get a few years out of it before you need to replace those. This motor would probably put out about 100 watts. https://www.youtube.com/watch?v=1k8aHz6xlXg
    • How to build a Homemade DIY Geothermal Heat Exchanger to Cool Your Garage
      This project goes over the build of a Geothermal heat pump that takes the hot air in your garage and cool it down by transferring that heat into water .The cold water is pulled out of the ground through a shallow hand dug well and send to a heat exchanger inside the garage . A fan attached to the heat exchanger blows out the cold air into the garage . The heat exchanger absorbs the existing heat inside the garage . The warmed up water is then removed through an exhaust pipe. Just a few feet down the earth is a consistent 55 degrees, summer or winter. Water at that depth is about the same temperature. To harness the cold water down below, we dig a shallow well. To do this we use a post auger and a 3 foot long well point that is attached to a 10 foot three quarter inch pipe using a drive coupling. We start by digging a hole using the post auger till the water table is reached and then start driving using the well point for additional two to three feet until it is submerged under the water table. A two to three foot trench is dug from where the well is installed to the garage . A One inch poly pipe is connected to the well pipe using a barbed coupling and is buried inside the two foot trench all the way to a well jet pump .The trench is dug down at least two feet until you hit some hard pan clay that is about where the temperatures begins being more constant. This keeps the pipe cool under the earth. The other end of the poly pipe coming out from the trench is connected a 1/2 HP Flotec Shallow well jet pump . The pump can be powered by a solar panel. The pump is kept outside the garage as it generates a lot of heat. If it is kept inside the garage, cooling effect from the water will be undone by the heat generated by the pump. The output of the pump is connected to a three quarter inch copper pipe inside the garage. It is then further connected to a water pressure tank with the help of a brass tee and a union. A relief valve is also attached to the tee to empty the water tank if the pressure gets too high. A water pressure tank is used prevent the pump from failure .It also acts as a buffer storage. The other end of the brass tee is connected to two pipes. One pipe goes outside the garage to a faucet and the other pipe is connected to a radiator that acts as a finned tube heat exchanger. The heat exchanger captures the hot air surrounding the garage and stores the heat into the finned coils within the radiator .The heat is transferred to the water flowing through them . An exhaust line from the radiator carries this hot water to outside the garage. Two flexible hose pipes connects the input of the heat exchanger to the water tank and output to an exhaust pipe. A box fan is placed in the front of the radiator to blow the cool air . The fan can be powered by Solar panels. Once the water starts running through the radiator , we start the fan https://www.youtube.com/watch?v=IRLLbmcnYjA https://www.youtube.com/watch?v=bCOeMIQLwgc