HEAT TRANSFER AND EVOLUTION OF TEMPERATURE GRADIENT THROUGH WOOD DURING DRYING PHASE; A CASE STUDY: BEECH (FAGUS ORIENTALIS) AND SPRUCE (PICEA ABIES)

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TARMIAN A.; SEPEHR A.

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Journal Paper

Paper Information

Journal: Iranian Journal of Wood and Paper Science Research Year:2010 | Volume:25 | Issue:2 (33) Page(s): 234-247

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Title

HEAT TRANSFER AND EVOLUTION OF TEMPERATURE GRADIENT THROUGH WOOD DURING DRYING PHASE; A CASE STUDY: BEECH (FAGUS ORIENTALIS) AND SPRUCE (PICEA ABIES)

Author(s)

TARMIAN A. | SEPEHR A. | Issue Writer Certificate

Keywords

HEAT TRANSFERQ2

TEMPERATURE PROFILEQ3

DRYINGQ2

SPRUCEQ3

BEECHQ2

Abstract

The HEAT TRANSFER through three orthotropic directions and the evolution of temperature gradient in BEECH (Fagus orientalis) and SPRUCE (Picea abies) during DRYING were investigated. Due to low capacity of dryer, small flat-sawn boards with dimensions of 80×25×40 mm (L×R×T) were used. Then, the boards were dried at the dry-bulb temperature of 60oC and relative humidity of 50%. Four surfaces of the boards were coated by polyurethane-coated aluminum foil to confine the heat flux along one direction. Then, the boards were thermally insulated by 50 mm-thick styrofoam. Holes of 1 mm diameter were made on the board specific distances to measure the temperature using thermocouple. The results showed that the temperature of each wood increased as heat up progressed until it reached the wet-bulb temperature. Then, it remained at an almost constant value as the wet bulb temperature until the wood moisture content reached the hygroscopic range. Furthermore, the pattern of the TEMPERATURE PROFILE for both wood species was almost identical. The surface temperature of the boards increased until it reached the dry-bulb temperature of 60oC, while the core temperate remained as the wet-bulb temperature (48-520C) throughout the rest of DRYING period.

Cites

TWO DIMENSIONAL HEAT TRANSFERS IN WOOD USING MATHEMATIC MODEL, A CASE STUDY: BEECH (FAGUS ORIENTALIS) AND POPLAR WOOD (POPULUS DELTOIDES)

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APA: Copy

TARMIAN, A., & SEPEHR, A.. (2010). HEAT TRANSFER AND EVOLUTION OF TEMPERATURE GRADIENT THROUGH WOOD DURING DRYING PHASE; A CASE STUDY: BEECH (FAGUS ORIENTALIS) AND SPRUCE (PICEA ABIES). IRANIAN JOURNAL OF WOOD AND PAPER SCIENCE RESEARCH, 25(2 (33)), 234-247. SID. https://sid.ir/paper/109701/en

Vancouver: Copy

TARMIAN A., SEPEHR A.. HEAT TRANSFER AND EVOLUTION OF TEMPERATURE GRADIENT THROUGH WOOD DURING DRYING PHASE; A CASE STUDY: BEECH (FAGUS ORIENTALIS) AND SPRUCE (PICEA ABIES). IRANIAN JOURNAL OF WOOD AND PAPER SCIENCE RESEARCH[Internet]. 2010;25(2 (33)):234-247. Available from: https://sid.ir/paper/109701/en

IEEE: Copy

A. TARMIAN, and A. SEPEHR, “HEAT TRANSFER AND EVOLUTION OF TEMPERATURE GRADIENT THROUGH WOOD DURING DRYING PHASE; A CASE STUDY: BEECH (FAGUS ORIENTALIS) AND SPRUCE (PICEA ABIES),” IRANIAN JOURNAL OF WOOD AND PAPER SCIENCE RESEARCH, vol. 25, no. 2 (33), pp. 234–247, 2010, [Online]. Available: https://sid.ir/paper/109701/en

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