This project goes over the build an efficient clean burn multi use ammo can portable rocket stove . Easy to build , small ,portable , leaves no smoke. The reason it is smokeless is because it uses a secondary burn system . Also can be used as a cooking stove.
The first thing you need is an old NATO ammo can. Remove the rubber seal that sits around the top of the can and replace it with a stove rope. The stove rope gets compressed when you close the stove with its closing mechanism and the smoke wont escape from around there.
One the top, we have the flue made out of 2 inch stainless pipe .It has two sections, upper section slides onto the lower section. In order to build the flue, we take the top of the ammo can, then place the pipe on top and draw around it that gives the circumference. Take a grinder and simply cut across the shape.
In order to get a smoke tight seal, we wrap some stove rope around the flue area we just cut and then insert the pipe and use a jubilee clip around the bottom and compress it against the stove rope.
Once this gets up to working temperature, it draws cold air in from down below and expels it out at the top. So all the smoke from the stove gets drawn upwards.
We use 2 turnbuckles as a stove door closing mechanism. There are two closing mechanisms on this door. One is a quarter turn latch. So you rotate it, the door opens ,you close and then you rotate it and it locks the door closed. Another mechanism is using a long piece of metal. You can turn each of these a quarter turn and that locks the door extremely tight to fit these turnbuckles .
The stove baffle plate is made out of 0.8mm thick thin steel. To make it, measure it up against the stove and bent the steel into that shape. The baffle helps in generating more heat as it keeps the air from escaping the burn chamber.
A secondary pipe made of galvanized steel pipe comes from back of the stove and comes across the stove through a small hole. The pipe has been drilled with small holes. When the stove is in operation, this draws in cold air from outside, it gets pre-heated on the way down across the burn chamber. And then the pre-heated air rises and is expelled naturally through these holes.
And since this pipe is just under the baffle plate, it reignites the smoke and the smoke is burnt on the way across the upper section of the stove.
The stove is insulated using fibreglass and stainless steel from three sides inside, helps in efficient secondary burn. You just need enough insulation to get the temperature high enough to get secondary burn. If the whole stove is insulated then the heat would dissipate through the flue instead.
The bottom of the stove is insulated using half inch rockwool and on top we have some chicken wire that stops the burning fuel from sitting on the bottom of the stove and being starved of oxygen. It allows the oxygen to get underneath and burn all the way around the wood efficiently.
The primary air is drawn in through an air intake at the side of the stove. To attach it to the stove, bend the pipe around the side and place a jubilee clip and stove rope around to insulate it. So when the stove is in operation, you can add sticks, twigs, pellets or anything you want without opening the door.
Burn Video :
- How to build a Simple and Efficient Homemade Water Distiller for cheap .Great for everyday use or in emergency/off-grid situations.This project goes into the build of a homemade DIY Water distiller that can purify dirty and contaminated water and desalinate salt water into clean drinking water. The total cost of this build is about sixty dollars. For distilling water, you need three thing - water, a source of heat, and some sort of apparatus that will allow water to boil into steam and then recollect that steam , condensing it back into usable water. A water distiller basically needs to do two things, it needs to boil water to create steam, and it needs to capture that steam in a way that allows it to condense back into water. The materials you need to build this distiller are six quart stainless steel pressure cooker, 20 foot three eighth inch copper tubing, two gallon bucket, jb weld, zip ties, flat bar, five sixteenth inch silicon tubing, mason jar. The first step is to boil the contaminated water in a tea kettle or a pressure cooker. Here we use a six quart stainless steel pressure cooker. Since the boiling water must be directed to the condenser, something with a sealed lid of some sort is needed. The existing pressure valve of the cooker is removed and replaced with a barbed fitting .A small rubber O ring gasket is used to tighten the new fitting. Next step is to make the condenser. The purpose of a condenser is to give steam the opportunity to cool back down enough so that it turns back into liquid water. The condenser is built using a 20 foot three eighth inch copper tubing. This is reformed into a tighter and taller coil such it will fit into a two gallon bucket. Because it needs some sort of support to avoid having the coil collapse under its own weight, a flat bar bent into a U shape is placed under the coil. A small cross piece is attached to it at the bottom using JB weld. The coil is attached to the punched bar with some zip ties. A hole is drilled near the bottom of the bucket to allow the copper tube to drain out the condensed water . The coil is placed inside the bucket carefully and the tail end of the coil is pushed into the drain hole . The condenser is connected to the pressure cooker with a 5/16th inch silicon tubing. A similar silicon tubing connects the bottom of the condenser to the clean water receptacle like a mason jar. When distilling water , cooling the steam back down is very important. The coil itself will cool some of that down. But that alone isn't enough at this scale. It will end up losing a lot of steam through the bottom of the condenser because not all of it has been able to cool and condense by the time it reaches the bottom. An efficient way is to add a cooling element to the condenser. Filling the bucket with ice water will increase the efficiency and water output by a lot because it will cool the copper tubing much more than air alone. Doing so had an immediate effect and all of the escaping steam condensed instantly to liquid water. By periodically adding cold water through the distillation process, it practically eliminated all of the steam waste coming out of the condenser. The gap around the copper tube where the hole is drilled is not sealed. This is because of two reasons. The first being able to easily remove the condenser from the bucket for cleaning and maintenance. The second reason being it acts as a drain. The boiling steam causes the copper tubing to get very hot. Because of this, it heats up the cool water very quickly and this drain makes it convenient in that the water will drain out before it gets to that point. In a survival situation , set the condenser over a larger bucket to collect and reuse the cooling water as it drained out and not simply let it go to waste. https://www.youtube.com/watch?v=PrfDskR2I5g
- How to build a Cheap Waste oil Barrel Heater for your Garage .Generate Free Heat from Used OilThis project goes over the build of a homemade waste oil garage heater made out of an old standard 55 gallon drum and a propane tank. This setup also doubles as a cooker. The first step is to make the Waste Oil Burner Unit. This is made out of a four inch tin can and a candy tin. Place the tin can in the center of the candy tin and mark around them. Cut a hole out of it with a chisel. Drill around 15 small holes around the tin can. The tin can acts like a chimney brining fresh air for the combustion. The open end of the tin is placed into the hole at the center of the candy tin. This burner uses a little over two liters of used waste oil per hour and makes lots of heat from that amount of oil. Make sure that the propane tank is empty. Fill it with water and let it sit for a day before we begin to disassemble them. Once the tank is safe to work with, we begin by cutting two sections on the them and divide it into two chambers .The top one is seven inches high and the bottom one is three inches. We also cut two openings at the top of the tank for exhaust fumes. We make a disc separator out a 4mm steel plate with a hole in the middle. This disc goes in between the upper and the lower chamber. We place the tin can burner unit inside the upper chamber . The lower chamber is for the air intake. Doors are made with the leftover cut pieces of the tank . The door for the upper chamber has a screen welded onto them for viewing purposes. The air for the combustion comes through the lower chamber ,passes through the disc separator hole and goes into the burner unit. To radiate the heat , we place a 55 gallon drum over the propane tank burner unit . To make this unit , we take the drum and place it sides and cut out a portion . A steel plate is placed in the middle . This can act as a cook top . One the other side of the drum ,we make a hole so that it sits in tightly on the propane burner tank. The two upright sides of the barrel is welded with a six inch steel pipe for heat distribution. This pipe acts as suction for the flue pipe . The flue pipe is welded onto this pipe in the middle . So the exhaust gas from the burner comes up and heats the plate over it ,travels up through the barrel into the pipe and moves out through the flue. To control the waste oil coming into the burn chamber of the barrel stove , we use a drip feed system. The oil stored in a bucket is connected to a half inch pipe with a ball valve. The pipe goes into a standard half inch gate valve and further connects to a pipe in pipe system. A half inch inch copper pipe is placed inside a one inch mild steel pipe . The pipe coming from the gate valve is connected to the copper pipe which is inside the mild steel pipe through an elbow. These two pipes goes straight into our burner unit inside the propane tank. The oil gets drip fed into the candy tin of our burner. To get started ,we add some kerosene and light up a fire using the torch. We slowly open the valve to start the oil feed into the burn chamber.
- DIY Video: How to build a Homemade Hot Water Off grid Air Heater using Heat Exchanger and a Car Radiator Fan