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| Natura: | Artículo científico |
| Lingua: | en |
| Pubblicazione: |
Universidad del Bío Bío
2005
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| Accesso online: | https://www.redalyc.org/articulo.oa?id=48570203 |
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Sommario:
- Mathematical modelling and experimental investigation of dehumidifier drying of radiata pine timber¿ Z. F. Sun C. G. Carrington C. Davis Q. Sun S. Pang Agrociencias kiln stack sapwood timber Pinus radaiata mathematical model dehumidifier drying A dynamic kiln-wide wood drying model was developed previously to solve the integral form ofthe unsteady-state mass, momentum and energy balance equations in the air side. For the wood side,an empirical model, characteristic drying curve, for the internal moisture movement is used, whichwas obtained for low and medium temperature drying of Pinus radiata, with a medium velocity of 1.4-4.1 m s1. As part of the research programme to improve the design and control of dehumidifier wooddrying kilns, the wood drying model has been assessed using the experimental data measured underdrying conditions similar to those in dehumidifier kiln. It is noted that close agreement between themodelled results and the experimental data can be obtained for Pinus radiata drying processes with amedium air velocity (< 5 m s1). However, larger discrepancy between the modelled results and themeasured data has been observed with a higher velocity (8 m s1). To solve this problem a newcharacteristic drying curve, based on a two-zone diffusion model, has been used in the kiln-wide wooddrying model and more accurate results have been obtained. 2005 artículo científico 0717-3644 https://www.redalyc.org/articulo.oa?id=48570203 en http://www.redalyc.org/revista.oa?id=485 Maderas. Ciencia y Tecnología application/pdf Universidad del Bío Bío Maderas. Ciencia y Tecnología (Chile) Num.2 Vol.7