Combinated drying
The combined use of atmospheric drying and other drying methods can give full play to the advantages of low cost and simple operation of atmospheric drying, combined with the advantages of fast speed of other drying methods, and can achieve very satisfactory economic results. The two-stage drying that is often used in production is an example of combined drying. The so-called two-stage drying means that the sawn timber is dried to a moisture content of 20% in the first stage in the lumber mill; Process drying to the desired final moisture content.
Combined drying, although additional processes, can greatly reduce the cost of drying and transportation costs by conducting mass drying at the mill. At the same time, it can be seen that in the second stage of drying, the drying time is shortened, the wind speed is reduced, and the energy is saved. Therefore, combined drying to reduce energy consumption and drying costs of effective methods. It has the advantages of conventional chamber drying, dehumidification drying and energy saving of solar drying, and has successfully solved the following problems:
1, conventional chamber dry energy consumption is high;
2, dehumidification drying time is long, the final moisture content is less than 10% difficult, more than 60mm thick plate heart is difficult to dry;
3. Solar drying is affected by climatic conditions, expensive heat storage equipment, poor reliability and other economic problems.
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