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What is dry bulb temperature and wet bulb temperature in wood drying

PubDate:2014-06-20   Views:784

There are five western pine species in British Columbia, three of which are of commercial importance: small dry pine, western white pine and dryland pine.


The wood is light in color, ranging from cream to yellow to light reddish-brown, with a straight, non-permeable texture and a fine and uniform texture.



use


Pine trees are used for light and moderate construction. Small dry pine belongs to the spruce-pine-hemlock (SPF) species and is widely used for structural and construction purposes.


Dryland pine produces knotless, factory-grade wood for further manufacturing.



product


Structural lumber, interior wall paneling, shelving, cut wood, joinery, window assemblies, veneers, trusses, moldings, furniture, boxes, crates, coffins, boats, doors and trim, lap lumber , pulp, wood, ore wood, telephone posts, telegraph posts and railway sleepers.



Technical Specifications


These tree species are light in weight, with moderate to medium strength and hardness. The wood dries quickly, with small gauge movement and possible small diameter cracks. The operation is relatively easy, the machining performance is good, the turning, planing and shaping effect is good, and it can be sanded to a smooth decorative surface. Adhesion is easy and nail holding ability is moderate, and the decorative effect is good.



Small dry pine


Density (air-dried average): 460 kg / m3


Specific Gravity (Dry Average): 0.46


Elasticity coefficient: 10 900 MPa MPa


Fracture Factor: 70.6 MPa



western white spruce


Density (air-dried average): 420 kg / m3


Specific Gravity (Dry Average): 0.40


Elasticity coefficient: 10 100 MPa MPa


Fracture Factor: 64.1 MPa