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High Capacity Wood Drying Room Thermal Oil Heating Medium Forklift Loading

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High Capacity Wood Drying Room Thermal Oil Heating Medium Forklift Loading

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Brand Name : TECH

Model Number : RYJ150

Certification : CE

Place of Origin : CHINA

MOQ : 1 SET

Price : Negotiable

Supply Ability : 50 sets/month

Delivery Time : 30-60days

Packaging Details : Seaworth packing

Materials : Aluminum and Stainless steel

Mode of control : Fully Automatic

Model : RYJ150

Capacity : 150m3

Heat transfer media : Thermal oil

Species to be dried : Hardwood and softwood

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All aluminum fully automatic 150m3 timber drying system/timber dryer/timber drying kiln/kiln dryer

Technical specification

Kiln dimension & capacity: Model RYJ150
Kiln external dimensions: Width 11400 mm
Depth 8800 mm
Height 5900 mm
Kiln internal dimensions: Width 11000 mm
Depth 8600 mm
Height 4500 mm
Kiln door: Width 11080 mm
Height 4550 mm
Kiln capacity: Approx 150m3/corresponding to 30mm of thickness of material to be dried and 20mm stickers
Type of door: Lift-sliding door
Way of loading: Forklift
Performance data: Model RYJ150
Bearing structure: Aluminum alloy
Heating medium: Thermal oil
Humidification medium: Cold water
Type of automatic control system: HOLZMEISTER M800B (DELHPI)
Number of fans: 7 units
Diameter of fan: 800mm
Volume of circulating air: 27,000 m3 /h
Motor: 3kw, class IP55
Electricity demand: 21kw
Voltage & Frequency: 380-440v, 50-60Hz
Snow Loading: 150 Kg/m2
Wind loading:

120 km/h

Function diagram:

High Capacity Wood Drying Room Thermal Oil Heating Medium Forklift Loading

What Is Kiln Drying? The Reasoning Behind Drying Wood

High Capacity Wood Drying Room Thermal Oil Heating Medium Forklift Loading

The Kiln Drying Process

High Capacity Wood Drying Room Thermal Oil Heating Medium Forklift LoadingWhen trees are felled and brought to a lumber mill, the first step is usually to debark and sort the logs by species, size or by end use. Logs destined for wood flooring, for example, are then sawn into rough boards of the required dimensions. These are often edged or trimmed for length before they are dried.

Drying can be done either by air or by kilns, which use circulating heated air to more rapidly remove the excess moisture from the wood. Each charge (or kiln load) is sorted by species and dimensions to optimize the process and to ensure that the final moisture content levels are even across the charge. After the wood has reached the correct moisture level for that species, it is sent through the planer and planed to its final dimensions, sorted to grade and shipped out. For wood flooring or other specific end products, the wood is typically shipped to a manufacturer for further planing, processing, and finishing. Mills and manufacturers alike invest time, money and training into their drying processes to provide optimal grade products at the correct moisture levels for their customers.

So if the wood leaves the kiln at the required moisture content level, the moisture content process is complete, right? It might seem feasible, but in reality, kiln drying is only the first step of a wood product’s life-long interaction with moisture. Kiln drying significantly reduces the moisture content of green lumber, but there’s more to be considered.

Moisture Past the Kiln

The reality of wood’s nature, and indeed, part of its attraction over the centuries, is that it is a hygroscopic material. Until it is fully sealed, wood constantly interacts with moisture in its environment and will absorb or release moisture as necessary to find a balance with its environment.

Examined closely, wood’s long, hollow cell structure means that each board is composed of bundles of long cells (think of a stack of drinking straws). In a living tree, those pathways function to move moisture and nutrients from the roots to the branches and leaves of the tree. Once the tree is felled, those pathways begin to lose that moisture as the wood dries. That moisture is naturally not replaced as it would be in a living tree, and the wood’s moisture level will drop considerably as it dries. The kiln drying process helps to draw that moisture out while minimizing the damage to the wood that rapid changes might cause.

Why is that so important?

“Wet” or green wood does not function well for anything from campfires to building materials. Its performance as green lumber can be unpredictable because of that inevitable moisture loss after the living tree is felled. As it dries, wood can twist, crack, warp, and shrink in its physical dimensions, making it less than ideal for buildings, flooring or woodworking. It’s an ongoing cycle in wood.

Think of a sponge. When a sponge is wet, it holds moisture in each hole or cell. As it dries, it not only releases that moisture, it shrinks in size. If it has been trimmed to a functional shape, like a rectangle, it may twist or curl as it dries. It does not, though, lose its capacity to reabsorb water when it is present. The sponge’s physical dimensions will change each time it absorbs and releases moisture.

In the same way, wood may have much of its moisture removed during the kiln drying process, but it does not lose the ability to reabsorb moisture that is in its environment. It might be a direct water source, moisture in an adjacent material or even humidity in the air; wood’s cellular structure will be ready to absorb any moisture it contacts.

Even when wood has been kiln-dried, it may have a documented moisture content level, but at any step of the processafter the kiln–transportation, manufacturing, storage or installation–it is possible for wood, even manufactured wood products, to lose additional moisture (in a dry environment) or re-absorb ambient moisture, altering its moisture content level and possibly even its dimensions.

FAQ:

1. How to choose size and capacity of the kilns?

It depends on time for drying cycle, and volume to dry per cycle or month.

2. How long does each drying cycle take.

It depends on species, size of timber, moisture content before drying, and moisture content after drying.

3. What to be done before installation of kilns?

To complete concrete foundation according to seller's drawings, and get power and water supply in position.

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Product Tags:

solar wood kiln

      

kiln drying systems

      

150m3 timber drying system

      
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