Currently, many motorists install heating systems in their garages. This is necessary to increase the coziness and comfort of the structure. Agree, it is much more pleasant to repair your personal car in a heated room. Often, the motorist is faced with the task of choosing the optimal type of furnace. The most common and universal are wood-burning garage stoves.
Types of furnaces
The most common designs of wood stoves:
- Potbelly stove.
- Potbelly stove with a water circuit.
- Long burning.
- Convection oven.
A potbelly stove is the most common wood stove used to heat a garage. The simplicity of the design provided it with great popularity back in the twenties of the twentieth century. Any material at hand is suitable for its manufacture: old iron barrels, propane cylinders, a simple iron box.
The principle of operation is very simple: when burning firewood in the furnace of the unit, the body heats up and gives off heat to the room.
A potbelly stove with a water circuit is a modification of a potbelly stove. The main difference is the presence of a water circuit. It consists of a piping system, shutoff valves, expansion tank, heat exchanger, pump, radiators.
The principle of operation is this - the water in the heat exchanger is heated and enters the radiators through a piping system. As a result of heat transfer, heat enters the room. Using a pump, the cooled water from the radiator is pumped to a heat exchanger for subsequent heating.
Brick oven - the most effective in terms of heating the room. Due to its design and the building material used, it has a high efficiency. Such a furnace heats up quickly during heating with wood, and holds heat for a long time. The principle of operation is the same as that of a potbelly stove.
The convection oven is also a modification of the potbelly stove. Its design is distinguished by the presence of a forced convection system. It consists of a fan and a manifold.
Thanks to this system, the efficiency of the converter furnace is higher than that of a potbelly stove.
The principle of operation is similar to the principle of action of a potbelly stove. The only difference is that the fan forcibly displaces heated air from the collector into the room.
A long burning furnace is also a modification of a potbelly stove . Its design uses the effect of upper combustion. Due to this, this design has a high efficiency. Principle of action: combustion in the furnace of the unit occurs under load, due to this, the fire zone has a small area. This provides continuous burning of solid fuel.
Advantages and disadvantages
Like any heater, a wood stove has its advantages and disadvantages.
Consider some of the benefits:
- Relatively low fuel price.
- Universality of the device during operation. You can use a heater to heat the room, prepare and heat food.
- Installation and installation of a garage stove is very simple and does not require large expenses.
- For the manufacture of the unit, improvised materials can be used.
- During operation, the use of additional installations and devices is not required.
- The small overall dimensions of the unit make it universal when used in garages.
- The operation of such a device does not require the use of an additional type of energy (electricity).
The disadvantages of this design include:
- Such furnaces have a large heat transfer, as a result of which they quickly heat up and quickly cool.
- To maintain a high temperature in the furnace, it is necessary to periodically lay firewood.
- Constant monitoring of the heating process is required to ensure safety.
For effective operation of the furnace, its design must have certain qualities. Since the garage is small, the stove must be compact in the first place. Operational efficiency for the heater is also important. In addition, the cost of manufacturing the unit should be minimal.
It is necessary to provide for the possibility of heating with different types of fuel. This will make the unit economically viable. Making a stove with your own hands, you can make it as convenient as possible to operate. Given all your needs, you will create a unique and inimitable heating device.
First you need to choose the material from which you will make a wood-burning stove. Here, your skills in working with bricks or metal will play a role. But in both cases, it must be remembered that the heater should not reduce the amount of oxygen in the room. It should produce heat as long as possible to heat the room.
The basic rule during operation of the furnace is the absence of emission of harmful substances.
When choosing a heater design, remember that it should not be flammable.
The most suitable material for the manufacture of potbelly stoves is propane cylinders and a thick-walled pipe. Old metal barrels are also suitable. All options are possible. The main condition is that the wall thickness should be at least 2 mm and a maximum of 5 mm. If you do everything according to the drawings, then such an oven will serve for a long time and effectively.
Which furnace to make - vertical or horizontal, everyone decides for himself. It is more convenient to heat a horizontal stove with wood. But the vertical is easy to use and takes up less space.
To make a vertical potbelly stove, we divide the pipe or cylinder into two unequal compartments. In the lower part we have a smaller one. Ash will be collected here. At the top is a larger compartment for laying firewood.
Next, do the following:
- Cut rectangular holes in both parts. The resulting rectangles are not discarded, we use them as doors in the future.
- For the most part we weld grates. It can be armature or any metal bars of the required size, with a diameter of 12-16 mm. The gap between the grates is 20 mm.
- We mount and weld the bottom.
- We make a hole at the top of the cylinder under the chimney. We make a nozzle from a sheet of metal and weld it to the hole at the top of the cylinder. The pipe is best made for standard chimneys, so that later there will be no problems with its installation.
- We weld the hinges to the cut doors and install them on the stove. The unit is ready.
To make a horizontal potbelly stove, it is necessary to weld an ash box from below. It can be made of sheet steel. In the lower part of the furnace we make holes so that the ash spills into the ash box.
In the upper part of the heating device (as well as on a vertical stove) we produce a pipe for the chimney. We weld the hinges on the door and install it from the end of the product. The furnace is ready for use.
The convection oven by design is an ordinary potbelly stove without a long burning mode , but with forced blowing to evenly distribute heat in the garage. The unit is a potbelly stove with a built-in mini fan in the back. He blows air through the guide tubes. It can be hollow metal pipes, a profile or a box made of sheet steel.
There, the air heats up and blows forward. The garage room is quickly and efficiently heated. The oven is ready for space heating.
Many people believe that the best heating device for a garage is a long burning stove. Its design is based on a vertical potbelly stove. The main differences are the lateral location of the chimney in the upper part and the presence of a removable top cover with a piston. In the top cover, cut a hole and insert the piston. He presses on the wood inside the furnace, providing "upper combustion."
Folding a brick oven in a garage is very simple. It is necessary to have an ordinal masonry scheme and have skills in working with bricks. Be sure to strictly follow the ordering scheme. For masonry use chamotte mortar or clay with the addition of cement and sand.
Before installing a brick wall, it is necessary to make a foundation 200 mm high. From the refractory bricks lay the combustion chamber. The door and the blower are located on the front wall. The grill is placed inside the device on the ledges of brick.
To make a furnace, 290-300 bricks are needed. Lay the masonry on fireclay solution. There are gaps between the bricks. This is necessary for thermal expansion. The formation of cracks in the housing of the heater due to the temperature difference will be minimized.
For the stove to last for a long time, the brick must be well burnt and without cracks. If it is necessary to increase the height of the heater, this can be done by repeating the rows.
To make a furnace with a water circuit, you first need to build a heat exchanger. Various materials can be used: steel sheets or steel pipes. It will also require skills in working with metal and plumbing.
To supply hot water and return cold, at the top of the stove cover we cut two holes. We install a water tank at the back of the furnace, which can be made from a sheet of metal or an old steel barrel. Pipes for piping are installed in the holes of the water tank.
We begin the installation of the pipeline. We consistently connect the pipeline with radiators and an expansion tank. The size of the tank should be chosen 20% more than the volume of water in the entire system.
If the closed water circuit is assembled correctly, then the water heated in the heat exchanger, according to the law of thermodynamics, enters the radiators through the pipeline. After heat transfer, water is again collected in the heat exchanger.
Having installed the oven in the garage, it is necessary to check its operability and fire safety:
- Firewood chopped into the size of the stove is placed in the combustion chamber. Fill it in 1/3.
- The air cover must be closed.
- We kindle firewood in the furnace. We start operation of the furnace.
The heater must be installed at a distance from flammable liquids. At least once every two weeks it is necessary to carry out sanitary cleaning of the furnace. The diameter of the chimney must be larger than the diameter of the exhaust outlet. This design does not allow soot to accumulate.
All options are unique in their own way. Manufacturing costs can be minimal if you use improvised material. You can also provide for the operation of the unit on different types of fuel. In addition, you yourself can come up with a heater design. This will make it unique.
With any heating device, your garage will become cozy and comfortable.
See how to make a super-oven out of a cylinder in the next video.