Wood drying technology is now well known that there are 4 types of Solar Kiln, Kiln Conventional, Vacuum Dehumidification Kiln and Kiln.
Solar Kiln
There are several types of wood dryer using solar energy but basically has the same principle that collects solar heat energy that reaches a certain temperature, and this temperature is used to remove water from the timber. The size and capacity of course different from producing energy from sunlight in our house.
The weakness of this type of dryer is the drying speed and capacity. Timber volume and drying time depends on the presence of the sun’s heat. For a country that has four seasons it will be less profitable but including the type of drying is the most expensive in terms of initial investment. Hence technically more popular in a country that has 4 seasons.
Conventional Conventional
Wood Kiln Dryer uses steam heat into the room didorongkan and circulated by the ventilation fan in it. The only type of drying steam drain and then drain out the moist air through the vents contained therein. The drying process produces results with good quality because the process be gradual and steady. However, when compared with other systems of this type require considerable energy, the flow of water vapor into the drying room should not be stopped. Technical drying is best known in Indonesia and other Asian countries. Especially in the lower-middle scale industries and even home industry.
Vacuum Kiln
Process runs quickly, much faster than conventional dryers because the water in the wood to evaporate too quickly. These are the advantages of vacuum drying system compared with another and still produce good quality dried wood.The drawback is the size of dried wood that can not be large because the vacuum kiln capacity (tube) is quite limited. Total volume in a single process is also much smaller than a conventional kiln. This system absolutely requires qualified operators because there should be no errors at all and the operational cost is quite large compared to conventional kilns. Moreover, the cost of investment is also large, can be 3 to 4 times the investment of a conventional dry kiln. So why choose a vacuum kiln? When the time and the environment is a top priority, vacuum kiln is the best choice. Using electricity does not cause air pollution as conventional kilns using wood or gas for burning.
Dehumidification kiln
As the only advantage of this system is because dehumidificaton kiln recycles hot air temperature in the drying room to rotate back through the wood pile sidelines. This means that the heat energy savings of conventional kiln system continues to flow without stopping. If the conventional system of moist air from the evaporation of water from the wood routed / discharged out through the ventilation output, then the dehumidification kiln air is passed through a cooling coil so that water vapor decomposes back.
Decomposes water flowed through special channels and exhaust hot air to flow back into the drying room. If the excess air temperature in the room, there is a special fan that will drain the exit temperature. Drying time is not different from conventional kiln types, and how to handle it-it was quite easy.
The equipment used for this type of slightly more expensive than the conventional type, but the final cost after the addition of several components of the cost when you have to build a boiler (insurance, taxes and other) this system is cheaper.
credit by http://www.indo-furni.com
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