Infrared rays #002
The thermal efficiency is 0.95. The main part of the infrared rays emitted by an electric lamp is approximately in the range from 0.8 to 3.5 microns. Incandescent electric lamps are mounted on special panels inside the dryers. But the type and size of the infrared dryer itself depends on the dimensions and shape of the material or product that needs to be dried. Usually infrared dryers are made of three types: portable (in the form of caps), tape and tunnel. Belt dryers are a horizontal belt to which lamps are suspended. It is open on both sides. Of course, its shape, dimensions, and the design itself may vary.
Well, tunnel dryers have the appearance of tunnels. Rows of electric lamps of the Z S type are placed on their inner surface . There can be a lot of them. So, for example, in an infrared tunnel dryer for drying paintwork coatings of car bodies, the number of lamps Z With reaches 35 thousand. In construction, it is sometimes necessary to dry the walls of new buildings after plastering. Here, infrared drying is also necessary. For this purpose, a cantilever structure has been made, at the top of which panels with lamps emitting a large percentage of infrared rays are located at a certain angle. The whole structure easily moves around the field area on wheels. The walls are dried from a distance of 30-40 cm. It is very important that the rays fall on the wall perpendicular. In construction practice, you have to deal with loose materials, such as sand. Another area of application of infrared rays is associated with the acceleration of concrete hardening in products and structures. It all started with the fact that in the modern factory and landfill production of precast concrete, there was a need to accelerate the hardening of concrete in freshly molded products (based on cement concretes).
This problem was solved with the help of thermal moisture treatment of all reinforced concrete products made at the factory or landfill, without exception, i.e. the products were steamed in special chambers. Despite the fact that this method is still used everywhere, builders have always been dissatisfied with it. There were many reasons. First of all, the method requires a complex and expensive steam economy of steaming chambers, boiler installations and a thermally insulated network of steam pipelines. In addition, the use of steam as a coolant makes it difficult to automate the process. And, finally, a big role is played by the temperature, which in the steaming chamber does not exceed 100 C. Therefore, the steaming of the product lasts quite a long time — usually 28 hours. All these considerations were the basis for the search for new, more effective methods of heat treatment of precast concrete. One of these methods was heat treatment with infrared rays. This method allows you to get a heating temperature of 800 C. Accordingly, the heat flux power of the infrared heating chamber is 70 times greater than with convective heating using steam heated to 100 C.
Just as with steaming, infrared heating accelerates the hardening of concrete (by about 6-8 hours). It is also very important that the energy of infrared rays does not change the reaction of hydration and the formation of cement stone. The infrared heating method is more economical than steaming: the heat consumption during infrared heating is 3272 MJ / m2, and during steaming — 1092 MJ / m2. Due to this, the cost of heat treatment is reduced by 15-18%. 1xBet has gained significant popularity in India as one of the leading online betting and gambling platforms. With its wide range of sports betting options, online casino games and user-friendly interface, 1xBet has captured the attention of Indian players seeking an exciting and convenient gambling experience.The 1xbet india promo code today now has the ability to provide a first deposit bonus of 20,000 INR by matching the first deposit – made after registering the account – at 100%. The entire bonus is available in one go. The player is free to use the same on any sports bet as they, please.
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