How to make a sun oven

To date, an alternative appeared by ordinary heat sources - solar energy. Solar oven with their own hands is a simple design. In the daytime, the power of this device reaches 1.5 kW, while the temperature of heating reaches 150 degrees. For the first time, the solar stove designed in the second half of the 7th century, Choras de Sosiur in Switzerland.

It is known that the flow of heat sent to us by the Sun is great, sin to disappear to such a number of energy without affairs. In the summer in the middle lane, it easily reaches one kilowatta on a square meter (Kilowatt is approximately like a mounted electric cover).

Today, this type of kitchenette is used in a wide range, from African countries to the northern regions, including in our country.

Solar furnaces: functions and advantages

Such furnaces are diverse in size, from a small box to the unit, but identical to the need. Their task includes heat accumulation for any needs. The principle of operation of the solar furnace is based on solar thermal heat absorbing energy, thanks to which you can make cooking without the use of gas and electricity, and holding it in the heat insulated chamber. Designs can be purchased in the store, but you can make solar furnace with your own hands.

The design of the solar furnace can be easily made of girlfriend.

Advantages of solar furnace:

1. The cheapness of use (does not require fuel).
2. Safety of cooking.
3. Easy to operate and care.
4. Mobility.
5. Ecology.
6. The possibility of cooking, smoking, baking and frying.
7. Uniform cooking without a probability of burning, not requiring mixing.

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Types and stages of the construction of sun ovens with their own hands

Depending on the type of construction, three main types of solar stoves are distinguished:

1. Boxing stove.
2. Combined furnaces.
3. With a mirror-hub.

Boxing furnace is used to continuously cooking food in large quantities. This is a cardboard box with a glass or plastic riding with the presence of reflective mirrors. As a rule, it requires thermal insulation, which can be paper, cardboard, modern insulation. Boxing solar furnaces have an advantage in durability: the service life reaches 10 years.

List of materials and tools for the construction of a solar furnace with their own hands

The box oven is mainly used for relatively slow cooking in large quantities.

1. List of materials:

• framework (cardboard, plywood, bars);
• Glass, mirror;
• aluminum foil or metal roofing material;
• heat insulator (mineral wool, cardboard, paper, etc.);
• paint, antiseptic, silicone;
• Fasteners (tape, glue, screws, nails, hinges).

2. List of tools:

• saw;
• scissors, knife;
• stapler;
• hammer, screwdriver;
• brush;
• roulette.

Step-by-step instruction of the manufacture of a solar boxed furnace with their own hands

1. We prepare the framework of the device consisting of 40x40 mm bars (fastening element) and plywood sheets (housing walls).
2. Construct a frame under the glass.
3. Fix the finished frame to the furnace frame with hinges.
4. We are wearing the inside of the future furnace with a roofing sheet of metal with self-draws or nails.
5. We insert the glass into the finished frame, fixing the strokes and processing silicone.
6. Fix the reflecting panel with the same hinges to which a mirror or a mirror tile is fixed.
7. Walls and bases between frame and metal sheet insulate any thermal insulating material, such as mineral wool, then close all plywood.
8. The inner part intended for cooking, paints dark, preferably black, heat-resistant non-toxic paint.
9. The outer part is processed by an antiseptic agent.

Boxed furnaces are very durable designs.

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Solar oven is ready for operation. For cooking, it is necessary to put the dishes inside the design by sending a reflective panel on the glass. You can also apply the following method for the construction of a box furnace:

1. Construct wooden box.
2. The inner part of the box with a black compacted paper for maximum absorption of solar radiation.
3. According to the perimeter of the box, we cut the solid reflectors identical to the size, rounded edges and processing sandpaper.
4. Fix reflectors from tin at the top of the box using loops, screws or other fastening elements, bending under the required angle, in order to accumulate and transmit solar heat into the cooking box.
5. We build a glass cover in order to convert ultraviolet to thermal energy.
6. On the base of the finished oven, we lay stones - heat drives and temperature regulators.
7. Optionally, install the thermometer.

The stove with parabolic concentrate is made in the form of a concave mirror, the sun rays are absorbed by focus. Basically, such a kitchen serves to cook a small amount of food for a short time. The main defects such a furnace consists in regular turning of the mirror surface to the Sun, which may cause the burns of mucous eyes and hands.

The combined construct of the solar furnace consists of a hub mirror comprising a certain amount of flat mirrors, thermally insulated with a polyethylene pan.

At the first stage, the hull for a solar furnace is prepared.

1. The base of the housing is made from the plywood sheet, in the center of which the rod, made of aluminum or steel of about half a meter, is fixed. At the end of the rod for the purpose of screwing the stand is made of carving.
2. The grooves are cut out for inserting edges from plywood.
3. For the manufacture of walls, they take four plywood sheets in the form of a rectangle, carved on one side of the curved arc, and from the bonding side with the ribs of the case - grooves.
4. The walls are glued with the base and fixed with clips.

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At the second stage, a mirror of a solar furnace is prepared.

1. Solar stoves are made of compacted smooth cardboard as triangles.
2. The triangles are stacked on the top of the ribs.
3. Purchase the surface of the cardboard foil from aluminum.
4. The stand is recorded for cooking at a point equal to half the radius of the resulting mirror.

Solar oven is ready. The most optimal material for the box is aluminum. Its advantages are the high coefficient of thermal conductivity and corrosion resistance.