Drying chamber for wood. Drying chamber for wood with your own hands

There are many technologies for high-quality wood drying, but each of them has its own disadvantages and advantages. Of course, it is the positive indicators that make them relevant, but there is still a difference between them and quite significant.

Varieties of equipment for drying wood

The type of drying chambers depends on the size of the lumber, its type, the nature of the qualities that the wood should be endowed with. Still, all technologies can be divided into 2 main categories:

• - heating of sawn timber is carried out directly by heating the wood with special heaters, which are in contact with the surfaces of the layers of the stack.
• Air - heating of wood is carried out by heating the air that circulates inside the chamber.

Also, for drying wood, the equipment should be divided according to the heating method:

• Direct - heating of lumber is carried out by electrical or alternative sources that generate direct heat. These types of dryers include convection chambers, aerodynamic chambers, steam chambers and gas chambers.
• Electrophysical - technologies in which the drying of sawn timber occurs without heating the wood. These types of equipment include cameras /, and.
• Combined - a type of equipment that combines two physical processes: overpressure and temperature. These types include pulse-vacuum drying installations, vacuum chambers.

Our company offers custom-made production of vacuum chambers for drying lumber. ... and up to 6 m long. We also carry out orders with individual requirements for the loaded wood, both in length and in volume. The technology consists in contact heating at low temperatures, while the wood does not crack or deform. The resulting moisture content is 6-8% for three, with a scrap rate of about 1%. An individual drying mode is set for each of the species.

See also:

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Content Nuances in the implementation of drying Wood shrinkage table Coefficients of shrinkage and swelling Shrinkage allowances for tangential or mixed sawn timber species: spruce, pine, cedar, fir When does shrinkage occur? During the drying process, the wood significantly changes its physical parameters. It becomes lighter, changes its shape and the geometric dimensions are slightly distorted. All this together is called shrinkage and the main task at [...]

Contents Rapid drying using forced mode Rapid drying of boards in drying chambers Rapid drying of wood / firewood at home One of the main requirements in the development of new equipment for the harvesting of high-quality sawn timber is precisely fast drying of wood, but not all technologies can perform this with the same quality. With a sharp heating and even more overheating of wood, it not only [...]

Quality lumber can be called only if its equilibrium moisture content is about 15%, the correct geometry is observed on the cut and there are insignificant deviations from linearity. If all this is pronounced, then this indicates that the drying process was not followed. Therefore there is whole line requirements for equipment and its maintenance personnel, consisting of [...]

For the quality of any type of structure, it is important that the materials used are also of high quality and durable. And when it comes to wood, it must be dry, strong and resistant to decay.

To endow the tree with such properties, it must be dried. But the purchase of equipment for the thermal processing of wood is very expensive, so many craftsmen are trying to assemble their own.

A do-it-yourself lumber drying chamber can be cost effective, but it is far from perfect. Indicators such as 6% humidity in a couple of days with less than 1% of rejects in it are clearly unattainable, since the assembly is usually carried out from improvised means without the use of sensors and various smart systems control of various parameters of the tree, and most importantly, with practically no experience in creating drying chambers.

Features of do-it-yourself drying chambers

A homemade drying chamber is a room in which a heater is installed. And now it is worth considering if for drying 1 cubic meter. m will require at least 16 kW of energy, then how much will be required within 3-4 weeks (this is usually the standard drying time in such chambers. The costs can many times exceed the prices of the materials themselves. Plus, in case of non-compliance temperature regimes, low-quality heating along the length and without controlling the percentage of moisture, the boards are deformed in almost 100% of cases, which makes it very difficult to work with them.

The design of such cameras must be realized with the help of detailed miscalculations. Failure to comply with the technology leads to various accidents. For example, the camera body under the influence of vacuum can shrink like an aluminum can and other moments are often life-threatening to workers.

It is also necessary to take into account the source of energy. Electricity is expensive. It is more efficient to implement the operation of a wood-fired drying chamber using a solid fuel boiler.

The indisputable advantages include the possibility of significant cost savings. Since it is a quality camera, it is often expensive to purchase. But the anticipated savings can actually translate into substantial losses.

pros

There are many reasons for this.

For instance:

• the task of independent manufacture of the drying chamber is very difficult. To solve it, you will need the purchase of raw materials, necessary equipment... And, most importantly, the presence of specialists in the staff who are able to perform all the necessary calculations and build this facility;
• the slightest inaccuracies in the calculations and technology for the construction of an object can lead to a significant increase in the volume of scrap. And these are direct losses, violation of delivery times, fall business reputation and the image of the enterprise. Moreover, these errors can lead to the destruction of the chamber itself (for example, the vacuum chamber "folds" like a tin can);
• significantly higher power consumption.

Example.

To dry a cubic meter of lumber in a home-made chamber, an average of at least 16 kW is required. Calculate your monthly expense (even with an 8 hour workday and 5 day work week).

• parameters of finished sawn timber, which are provided by vacuum chambers manufactured by a specialized enterprise (for example, a moisture level of 6%, achieved in two days of work, or a scrap percentage not exceeding 1%), are practically unattainable in self-made devices.

Possible design options

If an objective analysis has shown that the company is able to solve all the upcoming difficulties associated with manufacturing, commissioning and subsequent operation, you can start working on this issue in detail.

For this, several questions have to be answered:

• what kind of drying mode will be implemented in it (the required temperature in the chamber depends on this): low-temperature or high-temperature;
• its future device (prefabricated metal, or built from existing building materials (concrete, brick, blocks, etc.);
• installation site (detached building, section of the workshop territory). Since the miscalculation of subsequent work depends on such a decision (foundation, laying of engineering communications, delivery of raw materials, etc.);
• loading option (forklift, rail cart);
• heat supply option (hot air, radiant energy, superheated steam, electric current, other options);
• decide on the required equipment for the future furnace (main and auxiliary).

The first group must include a system of humidification and ventilation (supply and exhaust), heat supply. Secondly, psychrometric and heat-insulated door blocks, electric motors for driving fans, understack trolleys, etc.

• a variant of organizing process control ( manual mode, semiautomatic device, automatic mode). Ideally, you can provide for remote control of processes.

All of the above issues are resolved in the context of the selected type of drying chamber. Today, there are chamber and tunnel options (they implement convective heat transfer).

The former are shorter than the latter and, most often, for loading raw materials and unloading finished products one door is used. As a rule, this option is chosen.

Tunnel ones provide for the movement of materials during operation along the entire length of the chamber. Loading, on the one hand. Unloading, from the opposite. These cameras are used in large enterprises.

There are drying chambers of the condensation type. They have significant efficiency, but the drying process is very long in time (the equipment is not capable of operating under conditions high temperatures). This leads to significant heat loss and increases energy consumption.

There are many more criteria that must be taken into account when calculating:

• the method of circulation of the agent used for drying;
• its characteristics;
• the type of fencing to be performed;
• operating principle;
• way of circulation.

Each of these questions directly affects the drying speed, the possible volumes of lumber loaded at the same time, the characteristics of the finished product.

In addition, it is imperative to take into account the type of wood, its initial moisture content, and the geometric dimensions of the sawn timber.

Careful analysis and detailed calculation, with a high degree of probability, will prove the economic feasibility of purchasing and installing a ready-made drying chamber. Although, in individual cases, making it on your own can also be cost-effective.

How can we help

Falcon has been producing vacuum chambers for wood drying for nearly two decades. Cooperation with us is beneficial both for those who are going to independently make a drying chamber, and for those who want to purchase ready product to have guaranteed quality products in marketable volumes.

We are ready to offer our partners from the first group the equipment and units that are necessary for the functioning of the cameras in the range. For example, heating panels with water as a heat carrier.

They can be installed in structures of any volume, are designed for operation in a vacuum environment, and are capable of operating at high temperatures.

The panels can be selected according to a number of characteristics:

• by the volume of the chamber for which they are purchased (we offer 4 versions - for volumes up to 3 cubic meters, up to 8, up to 15, up to 21);
• they can be equipped with automatic equipment in standard, maximum or optimal, for the customer, execution;
• by size: 2000 * 3000 or 1500 * 3000.

In addition, we offer complete heating units, pyrolysis boilers, liquid oil products, ready-to-install vacuum units and automation.

We manufacture automation for each type of chamber: Convective, aerodynamic, vacuum, etc.

The essential advantages of purchasing a ready-made solution are:

• significant time savings (it takes at least 14 months to develop a project independently and bring it to fruition);
• savings on unplanned expenses. Practice shows that it takes an amount comparable to (or exceeding) the price of the finished camera to bring the performance of a home-made camera to the required parameters;
• guaranteed release of only high quality products;
• the company begins to receive net profits immediately after the completion of the NDP. Time for fine-tuning the equipment and characteristics of the finished product (downtime) is not required.

If you need to design a vacuum drying, it is better to seek professional help. We are engaged in the production of:

• mobile,
• stationary,
• high efficiency,
• low power consumption.

It is possible to design not only drying, but we can also supply new equipment at an acceptable cost. Powered by both electricity and production waste: slab, firewood, etc.

For those who can count money, it saves own time and pays paramount attention to quality, a wide range of vacuum chambers of our production is available, the main characteristics of which can be found on the website, in the company's catalog or by contacting the nearest office in person.

We also implement more budget options from heating plates. More details can be obtained from the manager by phone or email on the main page.

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Contents Vacuum drying as an alternative to a hand-made microwave chamber Today there are a lot of ways to dry lumber, each has advantages and disadvantages. As an example, do-it-yourself microwave drying of wood. The technology is no longer new and quite productive. Microwave chambers are used for drying hardwood, lumber with a large section, veneer, timber, logs. Basically, after drying, the material [...]

One of the mandatory stages in the production of wood-based materials is harvested timber, which is produced outdoors and in special chambers, which protects lumber from fungus, prevents deformation and changes in parameters.

Drying chambers for sawn timber operate in a certain mode, which is selected depending on the initial moisture content, wood species, board thickness, planned use, taking into account the design features of the dryer.

The installation can also dry firewood, which is used in solid fuel heating boilers, fireplaces.

Drying modes

During the drying process, the oven can operate in low temperature, normal or high temperature mode.

Low temperature and normal mode

Low-temperature wood processing is carried out at 45 °. This is the mildest method, it retains all the original properties of the wood to the smallest nuances and is considered a high quality technology. At the end of the process, the moisture content of the wood is about 20%, that is, such drying can be considered preliminary.

As for the normal mode, it takes place at temperatures up to 90 °. After drying, the material does not change shape and size, the color brightness and strength are slightly reduced. This is the most common technology used for various types of wood.

High temperature mode

In this mode, drying occurs due to the action of superheated steam (temperature over 100 °) or hot air. The high-temperature drying process reduces the strength of the wood, imparts a darker shade, so the material is used to create minor building and furniture units. In this case, drying with superheated steam will be more gentle than using air.

Types of drying chambers

Dryer for boards can be with natural and forced air exchange. Moreover, the first option is ineffective and unpredictable. Therefore, in order to avoid unjustified risks, chambers with natural drying are currently almost not used.

By the principle of operation, the following types of dryers can be distinguished:

• convective;
• condensing;
• vacuum;
• aerodynamic;
• Microwave cameras.

The difference between chambers in dryers for wood is what equipment is used to heat the air, circulate it and lower the pressure.

Convective

The drying chamber of the convection (convection) type is a rectangular insulated container with powerful ventilation in the ceiling edge, due to which air is distributed through the heaters and wood. As a result of heating, the moisture of the lumber turns into steam, then it leaves the chamber through special valves. This process of exchange of thermal energy is called convection.

Convective dryers are produced in two types: tunnel and chamber dryers. In the first design, the boards enter the chamber from one side and are unloaded from the opposite side. These models are mobile and designed for use in large sawmills.

Chamber drying plants provide for the launch and unloading of sawn timber through one door.

Convection chambers have the following features:

• in one cycle, you can process 20 cubic meters of wood, provided that the volume is completely filled;
• it is possible to dry all types of sawn timber by stacking with gaps;
• after drying, it is possible to perform steaming, impregnation of products;
• when connecting a solid fuel boiler for heating, the process will be more economical;
• the design is large, therefore it is intended for stationary work (without leaving).

The advantages include the high quality of drying, but if the chamber is not filled to 100%, then there will be a high probability of obtaining poorly dried wood (with overheating or high humidity) due to the uneven passage of hot air flows through the products. A possible disadvantage is high power consumption.

Condensing

Condensing drying chambers are similar in design to convection chambers, but differ in the principle of operation. Wet steam generated during wood drying turns into water (condenses), which is collected in special containers. This technology is achieved due to the tightness of the drying chamber. Reserves of the obtained water are used for space heating.

Despite the efficiency of condensing units, the drying process takes a long time (approximately 2-3 weeks), while in convective units it takes from 1 to 2 weeks. Also, the disadvantage is the high cost of the unit.

Vacuum

The dryer works on the principle of vacuum removal of excess moisture, the drying process consists of three stages: heating (preparatory), drying (with humidification), and cooling. Over the full drying period, about 250 identical cycles are performed. The presence of a vacuum softens the effects of high temperatures and prevents the wood from cracking.

The differences in the vacuum drying chamber are:

• fast drying of wood;
• energy savings as a result of the temperature rise of the functional heating plates inserted between the lumber.

Vacuum chambers are expensive to purchase and maintain, so drying pine or spruce in them is unprofitable.

Aerodynamic

The installation is a metal box with high-quality thermal insulation. The moisture formed as a result of drying drains into a special collection container. The heated air circulates in a closed space using a special aerodynamic propeller, which gives its energy to the drying process.

The chamber must be fully loaded with lumber, only then the quality of the work will not suffer. Maintenance of an aerodynamic wood dryer does not require specific knowledge, the installation is fully automated.

The disadvantages are the relatively long drying process (about 20 days), high energy consumption, lack of temperature control.

Microwave cameras

Microwave drying technology has been developed relatively recently. The installation is a closed metal container with a door in the end wall and operates on the principle of a microwave oven. Microwave radiation heats the wood, from which water molecules are squeezed out under pressure.

The camera is convenient in that it can be positioned anywhere in the room. Due to the powerful effect of electromagnetic waves, wood drying takes no more than 6 days.

The advantage of the microwave installation is also high quality drying at the correct mode.

The dryer is expensive due to the high consumption of electricity and the need to change the main spare part from time to time - the magnetron (a device for emitting electromagnetic waves).

DIY making

Drying wood privately requires a special chamber that you can make yourself. If you have to build a wood dryer with your own hands, then on a plot of land you need to allocate an area of ​​about 10 m 2 for installation. You will need concrete for the foundation, material and insulation for the walls, foam, ventilation system, boiler and auxiliary equipment.

Construction stages

The construction of a mini-dryer consists of successive stages:

• preparation of the foundation for the installation;
• walling;
• thermal insulation;
• roof and door installation;
• installation of radiators and fans on the ceiling;
• installation of the boiler in compliance with safety regulations, piping.

Such work will be justified with the regular use of the finished object. The drying chamber will need to be fully loaded and strictly adhere to the drying technology.

Foundation construction

The site is marked taking into account the length of the lumber and the total width of the stacked stacks plus a loading allowance of about 30 cm.

After marking the site, it must be concreted in such a way that the level of the chamber floor is about 10 cm higher than the ground level. The concrete site is made with bumpers protruding half a meter. To prevent water from accumulating in the drying chamber, the foundation must be made with a slight slope. It is also necessary to provide for the filling of the rails for the transport of the trolley with products.

Walling

Bricks, sandwich panels, railway containers can be used as materials. The most common material is wood. Three walls are made from it, and it is desirable to make the fourth of concrete.

The height of the wood drying chamber is made up of the height of the stacks, a loading allowance of 30 cm and the heights of fans and radiators. When building a small chamber, the height is calculated taking into account the filling of the entire volume.

The heating of the installation requires a source of thermal energy, therefore, when installing the walls, it is required to build an extension for the boiler and its auxiliary equipment.

Insulation and installation of the roof

Dry shavings or sawdust, which are applied to the walls in the form of a mixture with cement and an antiseptic, can serve as an effective and economical heat-insulating material. To preserve heat, the floor is covered with shavings.

The roof of a home-made room is mounted with a slope so that the snow does not linger on it. Then the doors are installed by hanging on an I-beam or swing doors.

Equipment installation

Align the fans vertically across the width of the ceiling to evenly supply heat. The next row will consist of radiators. To keep the heat in the drying chamber, you must first seal the cracks with polyurethane foam.

The heat is supplied to the radiators from the boiler, which can run on electricity, liquid or solid fuel. Usually, a wood-burning boiler is chosen for heating the drying chamber. Pipes are brought to the boiler, then an anti-explosion valve is installed to regulate the operation of the equipment.

Obligatory and correct drying in a home-made or purchased drying chamber is a reliable guarantee of the quality of lumber.

The drying chamber is the most important equipment in woodworking enterprises, since it allows you to remove moisture from lumber, heat-treat wood to prevent biological destruction, impart resistance to decay, maintain mechanical strength at the lowest density, and create minimum thermal conductivity and electrical conductivity in wood.

What are drying chambers and complexes?

Drying chambers are industrial equipment used for drying various types of lumber and wood species, deciduous or coniferous, for fumigating pallets. For processing large volumes of wood, modular chambers are combined, creating large-sized drying complexes.

Types of drying chambers and drying modes

LLC "MAKIL PLUS" offers drying chambers for lumber, with boilers (heating units) burning (utilizing) wood waste, which are divided into two types, depending on the heat carrier used:

1. Heat carrier - water... These installations consist of a boiler and water heaters, circulation pumps, automation adapted for use in cold weather (anti-freeze system), and a water treatment system. The system copes well under the condition of water softening, and the boiler power is selected based on the volume of drying chambers and additional consumers. Based on the above, a drying complex for drying water-type sawn timber has a large initial project cost, since it includes many expensive elements and requires specialized installation.
2. Heat carrier - air... The system includes an air heating unit with a capacity of 100 - 500 kW, a centrifugal fan and an air duct system. The initial costs for this equipment are included in the price of the camera, the customer receives a turnkey solution without additional investment. A universal air heating unit has a higher efficiency compared to a water boiler and is capable of delivering both a minimum and a higher temperature than a water-type wood drying chamber.

For wood processing in drying complexes, three main modes can be used: soft, medium and forced. While maintaining a soft regime with a temperature of up to 55 ° C, during the drying process, the wood retains all its properties, without changing its strength and color. When using medium (normal) mode with temperatures up to 67-70 ° C, the shade of the wood changes slightly. For high temperatures up to 85-90 ° C with forced mode, fast drying is characteristic, but with darkening of the wood.

Technologies used by the company in the manufacture of cameras

The main advantage of wood drying chambers is:

1. Autonomous operation of the system in the absence of heating networks
2. Minimum fuel costs with simultaneous waste disposal
3. Compactness of placement of main and auxiliary equipment
4. The ability to dismantle the equipment and move it to the prepared foundation
5. High degree thermal insulation of the chamber as a whole, tightness and insulation of sliding gates
6. Rapid warming up to the required temperature
7. Minimum heat loss through structures
8. Desiccant and heat transfer medium, both air and water.
9. The ability to quickly convert to a coolant.
10. Ease of maintenance, ease of management.
11. The ability to dry in any mode.
12. Drying complexes are made of 80% of Russian materials that do not require long waiting times for replacement.
13. The modular design allows new drying chambers to be added without stopping existing chambers.
14. Thermally protected reversible axial fans with Siemens electric motors /
15. Drying process control system Litouch from the world leader Logika
16. The controller can be programmed for up to 16 phases of lumber drying, which allows you to create special climatic conditions inside the chamber for the drying process.
17. High maintainability during operation

These technologies not only allow drying lumber without discoloration and cracking, but also ensure trouble-free operation of the equipment.

The economic return on wood waste chambers

Economic payback is one of the benefits of MAKIL PLUS equipment. A drying complex for wood, on average, pays off within a year, since the cost of drying 1 cubic meter, including the cost of maintaining the device, is about 450 rubles. In addition, the purchase of a completely ready-to-use installation solves the problem of wood waste disposal. At the same time, mixed waste is suitable for work, even with a high percentage of moisture.

The company "MAKIL PLUS" puts on sale drying equipment with chambers with a volume of 10 to 140 m 3, which are manufactured as per finished projects and under individual requirements customer. Drying complexes for wood "MAKIL PLUS" are already operating in every region of Russia and are becoming more in demand every day.

More detailed information on this equipment and its purchase can be obtained by contacting the managers of our company.

Drying is an obligatory stage in the preparation of wood before processing. So that the logs do not deform, they are dried under certain conditions, which are created in drying chambers. For a home workshop, you can make a wood dryer yourself.

The importance of drying

Since ancient times, wood was used in the manufacture of wood products, cut down several years ago. Furniture made from damp or improperly dried boards will warp or crack and crack. Drying, the material shrinks, raw wood beams will lead over time, and cracks with a palm width will appear in the walls of the log house. Mold grows in raw wood. But overdried boards are also bad - the material begins to absorb moisture, swells.

Drying is carried out with hot air or steam, the process is long and expensive, but it gives the wood additional strength, prevents changes in shape and size, the lumber is stored longer.

Drying modes

There are several modes of drying sawn timber. In self-made chambers, the temperature rises in stages, removing moisture from the raw materials. Drying technology is selected taking into account:

• wood species;
• dimensions of lumber;
• final and starting moisture;
• dryer features;
• quality categories of raw materials.

The drying process can be high temperature or low temperature. In the second case, the primary treatment is carried out at a temperature not reaching 100 degrees.

Low temperature modes are divided into categories:

• soft - during the drying process, lumber retains all its properties, strength and color do not change;
• normal - the color changes slightly, strength decreases slightly;
• forced - when chipping and splitting, fragility is possible, the color darkens.

The change in the temperature of the medium at low-temperature conditions occurs in three stages. The transition to the next stage is possible when the wood reaches the specified moisture content.

High temperature processing is carried out in two stages. The second stage occurs when the moisture content of the raw material drops to 20%. This technology is used in the preparation of wood for the construction of secondary structures, which make it possible to make a change in color and a decrease in strength.

Types of drying chambers

Drying of wood on an industrial scale is carried out in special chambers. Moisture is removed from the lumber by heated air and carried out into the street. A complete cycle of wood drying takes place in the device. The room can be:

• prefabricated metal;
• erected from building materials.

The latter are installed directly in the carpentry shops or as detached buildings. The walls are made of reinforced concrete or bricks. At large enterprises, several cameras are equipped, combined into a module with a common control system and communications wiring. The air circulates horizontally or vertically in the dryer. Wood in industrial dryers can be transported on rails on trolleys, laid out by forklifts.

Heat sources in the dryer:

• hot steam;
• radiant heat from special devices;
• heated shelving racks;
• electric current that passes well through wet logs;
• high frequency electromagnetic field.

The camera is equipped with a main and additional equipment... The main one consists of systems:

• ventilation of the supply and exhaust type;
• heat supply;
• humidification.

Additional equipment is insulation of walls and doors, trolleys for stacking material, psychometric equipment, and an electric drive.

Industrial dryers are controlled automatically, small homemade dryers are controlled manually. Humidity is regulated by supply and exhaust ventilation and humidifiers. To measure the humidity in the room, a moisture meter is installed, which collects data simultaneously in several places.

As an energy carrier for heating air, you can use: electricity, wood processing waste, liquid, solid fuels.

Types of dryers

According to the method of air movement, cameras are divided into:

• with natural;
• with forced air exchange.

Chambers with natural air exchange are ineffective, the process in them cannot be controlled. Therefore, they are used less and less.

By the principle of action, the following are distinguished:

• convective;
• condensation dryers.

In convection chambers, the wood is blown by streams of hot air, heat is transferred by convection. They can be deep tunnels or chambered. In the tunnel chambers, logs are loaded from one end and unloaded from the other, moving along the chamber, the material is gradually dried. The cycle time is 4 to 12 hours. Such cameras are installed in large sawmills. Chamber dryers are more compact, a uniform microclimate is maintained throughout the volume. Allows to prepare any type of wood to the required condition. Therefore, most industrial dryers are chamber type.

According to the technology of condensation drying, moisture released from the material is deposited on coolers, accumulates in containers and is drained out. The efficiency of such a device is very high, but the process is long, accompanied by high heat losses. The technology is good for preparing hard lumber in small batches. The price of equipment and the prime cost of condensation drying is lower than that of convective drying.

Arrangement of a homemade dryer

In order to make a dryer with your own hands, you can do without drawings. It is necessary to provide:

• camera room;
• insulation;
• heat source;
• fan.

The area of ​​a hand-built dryer usually does not exceed 9 square meters. meters. In a square room, it is easier to ensure optimal flow of warm air. It is desirable that one wall of the chamber is made of concrete slabs, the others are made of wood. All walls are insulated from the inside in two layers: expanded polystyrene and foil board. Excellent and free insulation - wood shavings. And the foil can be replaced with penofol, which perfectly reflects heat.

A separate room of the dryer with your own hands can be built from aluminum, such a structure will last a long time. The frame is made of a profile, it is sheathed with sheet metal, which is insulated from the outside. The thickness of the insulation is at least 15 cm. The floor is covered with roofing felt, and a thick layer of shavings is poured over it as thermal insulation.

Care must be taken to carefully seal the front door!

The heat emitter can be made in the form of pipes or heating radiators. The water temperature should be 65-95 degrees. It is heated by an electric boiler, wood-burning stove, gas boiler. Even a two-burner electric stove is enough for a small camera. If the stove is located directly in the room, you need to cover it with bricks. The bricks will accumulate heat and gradually radiate it into the dryer. It is easy to equip a convection chamber with your own hands by installing a fan heater as a heat source.

When equipping a dryer for a home woodworking workshop with your own hands, it is important to follow the measures fire safety... There should always be a fire extinguisher near the building.

The constant circulation of warm water, which is provided by the pump, is important. To distribute the heat evenly throughout the room, a fan is installed. The workroom is equipped with a wet and dry bulb thermometer.

For the convenience of loading the board into the chamber, you can use a cart on the rails. And to increase the usable area, racks are built on the walls.

The step-by-step instructions are as follows:

1. We build the foundation.
2. We are building a frame.
3. We sheathe the frame with sheets of metal.
4. Installation of thermal insulation.
5. We cover the floor with foil and sawdust.
6. Installation of supports from bars.
7. Installation of heaters and fans.

The construction of a homemade lumber drying chamber in the video: