Numerical and experimental establishment of kiln drying schedule for Iranain beech based on diffusion theory

In order to establish a kiln drying schedule for Iranian Beech (Fagus orientalis) lumbers of 5.5 cm thickness, commercially cut from Shast Kola region , 5 km distance from Gorgan. They were then dried under the program based on diffusion theory (from Malmquist's relations) were adopted to dry t...

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Autores principales:	Mehrabi Madhoshi, Maliheh Alizadeh
Formato:	article
Lenguaje:	FA
Publicado:	Regional Information Center for Science and Technology (RICeST) 2017
Materias:	beech Diffusion theory drying defects Surface checks Forestry SD1-669.5
Acceso en línea:	https://doaj.org/article/b81f7948ec4342bc9be6d0cab1e6ab24
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spelling	oai:doaj.org-article:b81f7948ec4342bc9be6d0cab1e6ab242021-12-02T03:16:05ZNumerical and experimental establishment of kiln drying schedule for Iranain beech based on diffusion theory1735-09132383-112X10.22092/ijwpr.2017.110385.1403https://doaj.org/article/b81f7948ec4342bc9be6d0cab1e6ab242017-12-01T00:00:00Zhttp://ijwpr.areeo.ac.ir/article_113093_5b4e7e9e9aec3e48a1511ce843e218f1.pdfhttps://doaj.org/toc/1735-0913https://doaj.org/toc/2383-112XIn order to establish a kiln drying schedule for Iranian Beech (Fagus orientalis) lumbers of 5.5 cm thickness, commercially cut from Shast Kola region , 5 km distance from Gorgan. They were then dried under the program based on diffusion theory (from Malmquist's relations) were adopted to dry the lumbers to the final moisture content of 12±2 %. This program for three separate kiln charges and initial moisture content 66.6, 58 and 45 percent was developed. Initial drying bulb temperature (first step) 46 °C and wet-bulb temperature 45 °C was calculated and in three schedules were same. The severity of surface, end checks and warp (bowing, crooking, twisting) in the lumbers were measured before and after the drying process and quality control methods were used to analyze the wood defects. Results indicated that drying of beech lumber using this new schedule was satisfactory. Also intensity changes of defect in all three repeats were about acceptable quality and quantity. Superior characteristics of this program was no surface checks in samples because the moisture content was reduced slowly.Mehrabi MadhoshiMaliheh AlizadehRegional Information Center for Science and Technology (RICeST)articlebeechDiffusion theorydrying defectsSurface checksForestrySD1-669.5FAتحقیقات علوم چوب و کاغذ ایران, Vol 32, Iss 4, Pp 486-497 (2017)
institution	DOAJ
collection	DOAJ
language	FA
topic	beech Diffusion theory drying defects Surface checks Forestry SD1-669.5
spellingShingle	beech Diffusion theory drying defects Surface checks Forestry SD1-669.5 Mehrabi Madhoshi Maliheh Alizadeh Numerical and experimental establishment of kiln drying schedule for Iranain beech based on diffusion theory
description	In order to establish a kiln drying schedule for Iranian Beech (Fagus orientalis) lumbers of 5.5 cm thickness, commercially cut from Shast Kola region , 5 km distance from Gorgan. They were then dried under the program based on diffusion theory (from Malmquist's relations) were adopted to dry the lumbers to the final moisture content of 12±2 %. This program for three separate kiln charges and initial moisture content 66.6, 58 and 45 percent was developed. Initial drying bulb temperature (first step) 46 °C and wet-bulb temperature 45 °C was calculated and in three schedules were same. The severity of surface, end checks and warp (bowing, crooking, twisting) in the lumbers were measured before and after the drying process and quality control methods were used to analyze the wood defects. Results indicated that drying of beech lumber using this new schedule was satisfactory. Also intensity changes of defect in all three repeats were about acceptable quality and quantity. Superior characteristics of this program was no surface checks in samples because the moisture content was reduced slowly.
format	article
author	Mehrabi Madhoshi Maliheh Alizadeh
author_facet	Mehrabi Madhoshi Maliheh Alizadeh
author_sort	Mehrabi Madhoshi
title	Numerical and experimental establishment of kiln drying schedule for Iranain beech based on diffusion theory
title_short	Numerical and experimental establishment of kiln drying schedule for Iranain beech based on diffusion theory
title_full	Numerical and experimental establishment of kiln drying schedule for Iranain beech based on diffusion theory
title_fullStr	Numerical and experimental establishment of kiln drying schedule for Iranain beech based on diffusion theory
title_full_unstemmed	Numerical and experimental establishment of kiln drying schedule for Iranain beech based on diffusion theory
title_sort	numerical and experimental establishment of kiln drying schedule for iranain beech based on diffusion theory
publisher	Regional Information Center for Science and Technology (RICeST)
publishDate	2017
url	https://doaj.org/article/b81f7948ec4342bc9be6d0cab1e6ab24
work_keys_str_mv	AT mehrabimadhoshi numericalandexperimentalestablishmentofkilndryingscheduleforiranainbeechbasedondiffusiontheory AT malihehalizadeh numericalandexperimentalestablishmentofkilndryingscheduleforiranainbeechbasedondiffusiontheory
_version_	1718401879124213760

Numerical and experimental establishment of kiln drying schedule for Iranain beech based on diffusion theory

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