Preparation of a Kiln Drying Schedule for Poplar (Populus nigra) Lumber of 5 cm Thickness

In order to establish a kiln drying schedule for Poplar (Populus nigra) lumbers of 5 cm thickness commercially cut from Taleghan region, three schedules, namely T8-F4, T8-F5 and T9-F4 were adopted to dry the lumbers to the final moisture content of 11 ± 2%.  Dry bulb temperatures for the schedules w...

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Main Authors: Sohrab Rahimi, Ghanbar Ebrahimi, Davood Parsapazhoh, Asghar Tarmian, Iraj Mansouryar
Format: Article
Language:fas
Published: Iranian Scientific Association of Wood and Paper Industries 2011-12-01
Series:Iranian Journal of Wood and Paper Industries
Subjects:
Online Access:http://www.ijwp.ir/article_11421_5d5e1d11efc3a873dbf4fe95d8def5c0.pdf
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author Sohrab Rahimi
Ghanbar Ebrahimi
Davood Parsapazhoh
Asghar Tarmian
Iraj Mansouryar
author_facet Sohrab Rahimi
Ghanbar Ebrahimi
Davood Parsapazhoh
Asghar Tarmian
Iraj Mansouryar
author_sort Sohrab Rahimi
collection DOAJ
description In order to establish a kiln drying schedule for Poplar (Populus nigra) lumbers of 5 cm thickness commercially cut from Taleghan region, three schedules, namely T8-F4, T8-F5 and T9-F4 were adopted to dry the lumbers to the final moisture content of 11 ± 2%.  Dry bulb temperatures for the schedules were adjusted at 54, 54 and 60 °C, while the final dry-bulb temperatures were adjusted at 82, 82 and 71 °C, respectively. The severity of surface, internal checks and warp in the lumbers were measured before and after the drying process and quality control methods were used to analyze wood defects. Results indicated that drying of Poplar lumber using each of the three schedules was satisfactory; however, the third schedule (T9-F4) resulted in better drying quality than did the others. Also, equalizing of lumbers for 24h is recommended.
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spelling doaj.art-61c5dbac62274d91bee20a7bcb4a37ab2022-12-22T03:27:38ZfasIranian Scientific Association of Wood and Paper IndustriesIranian Journal of Wood and Paper Industries2008-90662423-32422011-12-0112132511421Preparation of a Kiln Drying Schedule for Poplar (Populus nigra) Lumber of 5 cm ThicknessSohrab Rahimi0Ghanbar Ebrahimi1Davood Parsapazhoh2Asghar Tarmian3Iraj Mansouryar4کارشناس ارشد صنایع چوب دانشکده منابع طبیعی، دانشگاه تهران- استاد دانشکده منابع طبیعی، دانشگاه تهراناستاد دانشکده منابع طبیعی، دانشگاه تهراناستادیار دانشکده منابع طبیعی، دانشگاه تهرانکارشناس ارشد صنایع چوب دانشکده منابع طبیعی، دانشگاه تهرانIn order to establish a kiln drying schedule for Poplar (Populus nigra) lumbers of 5 cm thickness commercially cut from Taleghan region, three schedules, namely T8-F4, T8-F5 and T9-F4 were adopted to dry the lumbers to the final moisture content of 11 ± 2%.  Dry bulb temperatures for the schedules were adjusted at 54, 54 and 60 °C, while the final dry-bulb temperatures were adjusted at 82, 82 and 71 °C, respectively. The severity of surface, internal checks and warp in the lumbers were measured before and after the drying process and quality control methods were used to analyze wood defects. Results indicated that drying of Poplar lumber using each of the three schedules was satisfactory; however, the third schedule (T9-F4) resulted in better drying quality than did the others. Also, equalizing of lumbers for 24h is recommended.http://www.ijwp.ir/article_11421_5d5e1d11efc3a873dbf4fe95d8def5c0.pdfWoodPoplarKiln scheduleDryingDrying defects
spellingShingle Sohrab Rahimi
Ghanbar Ebrahimi
Davood Parsapazhoh
Asghar Tarmian
Iraj Mansouryar
Preparation of a Kiln Drying Schedule for Poplar (Populus nigra) Lumber of 5 cm Thickness
Iranian Journal of Wood and Paper Industries
Wood
Poplar
Kiln schedule
Drying
Drying defects
title Preparation of a Kiln Drying Schedule for Poplar (Populus nigra) Lumber of 5 cm Thickness
title_full Preparation of a Kiln Drying Schedule for Poplar (Populus nigra) Lumber of 5 cm Thickness
title_fullStr Preparation of a Kiln Drying Schedule for Poplar (Populus nigra) Lumber of 5 cm Thickness
title_full_unstemmed Preparation of a Kiln Drying Schedule for Poplar (Populus nigra) Lumber of 5 cm Thickness
title_short Preparation of a Kiln Drying Schedule for Poplar (Populus nigra) Lumber of 5 cm Thickness
title_sort preparation of a kiln drying schedule for poplar populus nigra lumber of 5 cm thickness
topic Wood
Poplar
Kiln schedule
Drying
Drying defects
url http://www.ijwp.ir/article_11421_5d5e1d11efc3a873dbf4fe95d8def5c0.pdf
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