Wood Drying Methodology
Wood drying technology is well known that there are 4 types of Solar Kiln, Conventional Kiln, Vacuum Kiln and Dehumidification Kiln.
There are several types of wood dryer using solar energy but has basically the same principle of collecting solar thermal energy that reaches a certain temperature and the temperature is used to remove water from the timber. The size and capacity of course is different from producing energy from sunlight in our house. The weakness of this dryer type is the speed and capacity of drying. Timber volume and drying time depends on the existence of the sun's heat. For in a country that has four this season will be less profitable but including the type of drying the cheapest in terms of initial investment. Therefore these technical more popular in a country that has 4 seasons.
Conventional Wood dryer uses hot water vapor that pushed into the room and circulated by the ventilation fan in it. This type of drying is just flowing steam and then drain the hot humid air out through vents contained therein. This process produces the results of drying with good quality for the process be gradual and stable. However, when compared with other systems of this type requires substantial energy, water vapor flow into the drying room should not be stopped. Technical drying is best known in Indonesia and other Asian countries. Especially in lower-middle-scale industries and even household industry.
The process moved quickly, faster than a conventional dryer because water in the wood evaporate too quickly. This is a vacuum drying system advantages compared with the other and still produce good quality dried wood. The drawback is the size of dried wood can not be large because the capacity of vacuum kiln (tube) is quite limited. Total volume in a single process is also much smaller than a conventional kiln. This system absolutely requires a quality service because there can be no mistakes at all and the operational cost is big enough compared to conventional kiln. Moreover, its investment cost is also large, can be 3 to 4 times the conventional dry kiln investment. So why choose a vacuum kiln? When time and environment a top priority, vacuum kiln is the best choice. Using electricity does not cause air pollution as conventional kiln that uses wood or gas for combustion.
As ones advantage of this system is because dehumidification kiln recycles hot air temperature inside the dryer room to circle back through the sidelines of the wood pile. This means the heat energy savings in the conventional kiln system continues to flow without interruption. If in the conventional system of moist air originating from the evaporation of water from the timber supplied / discharged out through the ventilation output, then in a dehumidification kiln air are supplied through the cooling coil so that water vapor decomposes back. Water is decomposed flowed through special channels and exhaust hot air to flow back into the dryer room. If the excess air temperature in the room, there is a special fan who would drain the exit temperature. Drying time is no different from conventional kiln types, and ways of handling-was fairly easy. Equipment used for this type is slightly more expensive than conventional types, but the final cost after the cost of additional components at the time you have to build the boiler (insurance, taxes, etc.) This system is cheaper.