This project goes over the build of a simple gasification system that functions to produce wood gas for running a generator, a cooking stove and for lanterns. We feed the wood chips and other materials through the opening at the top of the gasifier ,the air also gets drawn in from the top .The air would drop through the wood mass, down to the reduction zone and gets collected down at the bottom of the tank through the output pipe .
The materials needed to build this down draft style gasifier are a 3 old propane tanks, old steel sheets, wood pellets.
The first step is to make sure that propane tanks are empty .Remove the handles from the top of the 3 propane tanks and unthread the valves.
Cut the top portion from 2 tanks and stack the body of the tanks on top of each other and weld it. One of the cut out top pieces can be used a lid .
The bottom portion of the lower tank is cut open to create the reduction zone of the gasifier. To make the reduction point, we take the scrap steel sheet and make a five inch wide small tube of the them and weld them to the bottom third propane tank .
The bottom five gallon propane tank is used as a ash bin where all the ash is going to get caught and as an outlet for all the gases coming out of the system. The top portion of this tank is cut in such a way that it fits the reduction zone collar of the secondary tank.
Make sure that both the tanks fits nicely together so that you can pull the inner chamber out of the bottom ash tank to remove it, dump the ash catch out and use it again and again.
The top of the upper tank is cut open .This acts as the feed area where all the wood pieces are dropped in.
We make a screen with holes using a 20mm hole saw cutter from the leftover cutouts of the propane tank. We are gonna mount this screen inside the gasifier lower reduction zone.
A hinge and a wire is attached to the screen so it can open and close. This gives us the ability so we can shake the screen if it plugs up with ash or other materials. The wire goes through the reactor up to the top .
We have a pressure relief system installed on the lid of the gasifier. If anything were to happen inside of the gasifier , the build up pressure can be made to escape through the top lid .This is done by hooking up two springs on both sides of the lid through small loops .The springs on both sides is attached to hand levers.
We drill 8 half inch diameter holes just above reduction zone area and put thick steel tubing through them to the center of the chamber. The airflow will go in and be drawn down through the center of the reduction zone that helps in efficient burn. The pipes are curved in to the chamber so that it does not interfere with any wood mass as it goes into the reduction zone. We add plugs along these 8 tubes to regulate the air flow into the system.
Next step is to add the draw fan to the gasifier. Here we use a pellet stove fan .We add a 2 inch plate over the face of the fan and a threaded pipe to seal any air going into the gasifier.
We start up the gasifier by putting some chopped wood through the top and use the fan to get the wood gas producing out of the bottom outlet pipe.
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- How to build a Homemade Archimedes Screw Turbine using PVC parts to generate Off the grid Power from a flowing river or stream/creekThis project goes over the build of an Archimedes Turbine that can generate off the grid power from a flowing river or creek. This is basically a screw that turns when water passes through the pipe. You need a 5 foot farming auger to build this. The farming auger is put inside of a 6 inch pipe and placed in the creek at a certain angle, water would pour into the auger and that water would weigh down that auger and turn it. And so as it turned, it would turn a shaft that is attached to the end of the pipe and run a pulley system with a motor to generate electricity. We take an old belt sander and shave some of the edges to make it smooth and rotate without any friction inside the pipe. We use an angle grinder to split the pipe down the middle and use the separator nuts to kind of give more space in the pipe. Make sure you don't split the pipe into two. Open up enough space on the top by heating the PVC and clamp 2 spacer boards on either side and stretch the opening by using a C clamp. 2 three quarter inch boards are bolted using carriage bolts on either side of the pipe which gives us enough room here to get the auger installed. Allthreads of size eight and quarter inches are put through the boards and secured in place with the help of some washers and non locking nuts. https://www.youtube.com/watch?v=GTD5Y7EyK00 https://www.youtube.com/watch?v=GTD5Y7EyK00 https://www.youtube.com/watch?v=jwIfrIgVqZc https://www.youtube.com/watch?v=veb6xTz7Vhg https://www.youtube.com/watch?v=Ul76_kG0xyI https://www.youtube.com/watch?v=v4I9Zfp62F8 https://www.youtube.com/watch?v=Oqt38fbsQaA
- How to build a Simple Homemade AC Air Cooler using an Old Juice CartonThis project goes over the build of simple and cheap homemade Air Cooler made out of an old juice carton and other simple items which can be bought from Home Depot. The whole setup is powered by solar energy . The cost to build this AC Cooler is only $8.50 The drink bottle was a dollar at the store. The PVC pipe about $1.50, the DC Fan was $4.99 and the square dowels was 98 cents. The materials you need for this project are : 1/2 gallon container 3/8 inch square wooden dowel 1 1/2 inch PVC pipe coupler threaded on one end 80mm case fan Solar Panel Ice cubes Take the 80mm fan and put it down on the side of the container. Cut the three eighth inch square dowel and cut them the width of the container. Glue the fan on to the dowels on both the sides and the middle ones. Take a pencil and mark around in a circle on the inside and using a small knife , cut out the circle from the carton. Place the PVC coupler against the container and mark a small circle around it and cut along it. Widen the hole using a sandpaper such that the pipe fits in there properly. Take out the fan and grab some pieces of ice cubes and put them into the carton through the hole and put the fan back on. The fan is hooked to a solar panel. The fan has only 100 milliamps 12V power. The opening of the juice carton can be used as drain pipe which be used to drain out the water as needed. Don't waste the water. Just drink it, put a glass under there. Now you can get a nice cold drink of water after a couple hours. https://www.youtube.com/watch?v=ZnI7oXTzxbM