The heat exchanger of the air with his hands
The contents
- The principle of operation of the heat exchanger in the winter time
- The principle of operation in the summer
- Plate machines
- Rotary recuperators
- Recirculating water air exchange apparatus
- Industrial recuperators air flow
Clean the air in the room has always been the key to good health, and in order to achieve a air of their living rooms, opening Windows or doors for ventilation. To ensure the flow of freshness through open Windows easily in favorable weather, when the temperature within 18-25 ºC. How to provide a good atmosphere in the cold or heat, making the heat exchanger of the air with his hands, described in detail in this article.
What is the heat exchanger of the air? ↑
Design industrial, domestic heat exchanger is reminiscent of the hood – the part of the pipe with a fan equipped with a special, porous materials or bars, to separate the air flow and heat exchange. In lattice element with a long, narrow cells is the accumulation of heat from the warm air to heat the cold stream. Reverse the fan by the suction of the outdoor and exhaust internal air to the outside, periodically works and forces you to move flows through the cells.
In a double-walled heat exchanger between the two air flow interior and exterior that are not mixed together. The exchange of temperature of air masses takes place through the separation elements within the heat exchanger. The condensate that forms on the walls of the heat exchanger is removed during cooling of the warm air.
The question of the use of heat exchangers in everyday life became very important after the use of plastic Windows and metal doors. The density together with the use of finishing materials of a large number of chemicals require additional ventilation. All of this is directly related to the health effects on the human body.
Ready recuperators for country houses are expensive, so many people come to think about it making their hands.
The principle of operation of the heat exchanger in the winter time ↑
In winter warm air from the premises during the passage of cells gives off heat to the material from which they are made. The fan operates to remove air from the room. After about a minute, he switches and sucks the flow through cell inside the premises from the street. Air time due to the convection heat up due to heat of the lattice. A minute later the fan switches and directs air from the room out by heating the plate. Circulation efficiency is to minimize the heat losses from indoors with the entry of fresh air in contrast to open Windows for ventilation.
The principle of operation in summer ↑
In the hot summer time, the principle of operation of the heat exchanger is similar to its effect in winter. Only the cooler air inside and warmer outside. It turns out that the outer air cools down in the device, enters the room with lower temperature. It is especially comfortable and economical when operating in the summer of conditioning.
Types of heat exchangers ↑
Air heat exchanger for the apartment is important, modern instrument designed to preserve human health. The first design was invented in Germany and gradually found application throughout Europe. The Europeans are very concerned about saving energy, and solar collectors for home allow them to very effectively keep warm and ensure good air circulation in the room.
The Latin word «recuperatio» denotes the inverse compensation, the return later became the basis for the name of the recuperator. All four versions of his design found the greatest application of such a kind, economical heat exchanger air masses.
Plate devices ↑
Very widely used to improve air in the room. Cheap cost, comfort, and high efficiency (40-65%) allocate such recuperators among its peers. Details of the heat exchanger not moving and not exposed to friction, which makes the design of the plate of the device is very reliable and runs without breakdowns. In the plate heat exchangers air exchange happens as a natural movement without the cost of additional energy. First, a significant drawback of this design of the air heat exchanger is freezing the condensate in the winter and ice clogging of the space between the plates, as a consequence of the stoppage of air flow. The second disadvantage is the inability of moisture.
Rotary recuperators ↑
The design of the device is a rotating heat exchanger. The rpm is controlled by special sensors depending on the temperature of the outer and inner flow. The efficiency of such a device will dostigaet 87%. The possibility of humidifying the air is also a good quality of this unit. Winter is not subjected to icing.
Recirculating water air exchange apparatus ↑
Has the same efficiency as a plate heat exchanger (to 65%). In this setup, the heat during the air is accumulated in the liquid (water or antifreeze). The reversing heat exchanger has a complicated structure in which the liquid circulates between the exhaust channel of the intake and on special details. Design allows you to install individual elements of the construction of the heat exchanger in different places. For the operation of the apparatus requires the presence of electricity. To return moisture into the room, he is also not friendly.
Industrial recuperators air flow ↑
Used in areas with a large presence of people – in stores, manufacturing plants and similar areas. This type of roof the heat exchanger is not suitable to use in apartment or house. Its efficiency is in the range 55-68%, does not require large costs for installation and maintenance. Located in the perimeter of the ceiling does not affect the useful area, which is very convenient for its operation in cluttered equipment rooms.
Most convenient for use in the home is the heat exchanger air plate. Make it good, Masterova master your own hands is not difficult.
A job for skilled hands ↑
Room heat exchangers of air has a volume of air that they are able to skip for 1 hour. Calculation of heat exchanger «air-to-air» very complex, so often resort to secondary standard device parameters, necessary for good airflow on the area of the premises is 60 square meters.
Tools ↑
To manufacture the plate heat exchanger of heat of ventilating air necessary skills to work with the following tools:
- hammer;
- pliers;
- hacksaw;
- angular grinding machine (Bulgarian);
- roulette;
- area;
- drill.
All of these tools will be needed for the manufacture of the heat exchanger air at home. But all the tools are used in everyday life is often for repair work and most of their owners, as a rule, are good skills to use.
Materials ↑
The materials required for the manufacture of heat exchanger:
- the PCB;
- plastic flanges;
- galvanized sheet (will fit any flat material with a small thickness) – 4 mTwo;
- silicone;
- sealant;
- a wooden beam;
- insulation.
The work plan ↑
Of galvanized metal or dense material (e.g. MDF) manufactured box. Inside the walls of the box is attached to the insulation thickness of 5 cm Insulation of any suitable type, for example, polystyrene foam, mineral wool and other insulation materials. In the box you need to make holes and insert them flanges
Rectangles are made of PCB, width 20 cm, length 30 cm, with perfectly smooth edges. They are installed parallel to each other. The distance between the plates should be 5-6 mm. rectangles Attached by the application of industrial tube as a frame between the plates and neutral sealant. You need to consider that the standard sealant is corrosive to metals.
After drying sealant construction was placed in a box and fill all unnecessary voids with silicone. Made a heat exchanger set in place near the ceiling, the flanges appended to the input and output pipes.
Useful area all together plates shall be three square meters in order to measure efficiency was not lower than 60%. Only in this case, the temperature of the air entering into the premises, will not require additional heating, and the heat loss will be minimized.
Tips for device heat exchanger ↑
Household, plate recuperators have bad property be covered with ice in winter. To avoid this negative phenomenon it is necessary to provide a sensor that monitors the pressure of the incoming air and a bypass for feeding frosting to the warm air for warming and thawing of the plates. The sensor detects the drop in atmospheric pressure, and included the bypass, the hot air will prevent icing.
For noise isolation you need from a double layer of drywall to create the duct, giving it mineral wool. Attach the box in place of flexible duct. Then removed the noise from the operation of the device.
If the quality seal in the device box, the device allows to save about 30% of energy for heat generation in the room.
The heat exchanger removes the dirty air indoors causes the formation of mold and harmful microorganisms. Clean it very simple so its use creates comfort.
Create in your home a healthy atmosphere, crafting and installing the heat exchanger of the air in his apartment.