Compared with conventional steam dryers, dehumidifier dryers have an energy saving rate of 40%-70%. Among them, the energy saving rate of single heat source dehumidifier is about 40%, and the energy saving rate of dual heat source dehumidifier is about 70%.
The main difference between the dehumidification dryer and the conventional steam dryer is that the air cycle of the former is basically a closed cycle. The moist air discharged from the drying chamber is dehumidified by the dehumidification evaporator (and its latent heat of vaporization is recovered at the same time), and then the dry hot air is removed. It is sent back to the drying room to reduce the heat loss of inlet and exhaust gas compared with steam drying, so the energy consumption is significantly reduced. The difference between a single heat source and a dual heat source dehumidification dryer is that the latter has two evaporators.
The dehumidification evaporator takes heat from the moist air discharged from the drying room, while the heat pump yan-fa device absorbs heat from the atmosphere and supplies hot air to the drying room to heat it up. According to the test, when the ambient temperature is above 14℃, the compressor consumes 1kwh Electricity can obtain more than 3 times the heat energy. The drying room using a single heat source dehumidifier is currently heated mainly by electric heaters. Therefore, a single heat source consumes more energy than a dual heat source dehumidifier.
(2) The drying quality is good, the luster of the dried wood is good (mainly maintaining the original natural color), and generally no drying defects such as deformation, cracking, surface hardening, etc., so this drying method is particularly suitable for drying and easy to deform and crack Of hard-to-dry and precious materials. For export materials that require high drying quality, most of them currently use dehumidification and drying.
(3) Conducive to protecting the ecological environment. Because this kind of drying technology does not require boiler equipment, there is no fire hazard, and there will be no smoke pollution. Therefore, it is particularly suitable for use in areas with high environmental quality requirements.
(4) Low investment, quick results, and low operating cost. When the drying material is the same, the total investment of the whole set of equipment is slightly lower than that of steam drying. Because there is no need to build a boiler room, and the equipment in the drying room is simpler than steam drying, so as long as the funds and equipment are in place, it usually takes about 4 months to put into operation.
At the same time, because of the high degree of automation and simple operation of the equipment, only one person per shift is required. In addition, the drying energy consumption is low, so the operation cost is low.
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