Mass transfer properties of Acacia mangium plantation woodt

IF 1.2 4区农林科学 Q3 MATERIALS SCIENCE, PAPER & WOOD

Maderas-ciencia Y Tecnologia Pub Date : 2021-10-01 DOI:10.4067/s0718-221x2022000100402

Ha Tien Manh, A. Redman, Chuong Pham Van, Bui Duy Ngoc

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引用次数: 2

Abstract

This study investigated the mass transfer properties (permeability and mass diffusivity) in the longitudinal, radial and tangential directions of plantation-grown Acacia mangium in VinhPhuc province,northeast, Vietnam. These properties will be used to complement a conventional drying model in the future. Measurements of gas and liquid permeability were performed using a Porometer (POROLUXTM1000). Mass diffusivity was determined in a constant humidity and temperature chamber using PVC-CHA vaporimeters. Results showed the gas permeability was significant higher than liquid with the descending order of longitudinal, radial, and tangential directions. The permeability anisotropy ratios from the longitudinal to transverse directions of Acacia mangium were much lower than other published species. However, the obvious anisotropy ratios from radial to tangential for both permeability and diffusivity, is one of concerns as they can exacerbate defects during drying. Besides, the high permeability and diffusivity of Acaciamangium compared to some other species reported compounds its relatively fast drying rate.

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马来刺槐人工林的传质特性

本文研究了越南东北部永福省人工林马洋槐在纵向、径向和切向上的传质特性(渗透率和质量扩散率)。这些特性将用于补充传统的干燥模型在未来。使用孔隙计(POROLUXTM1000)测量气体和液体渗透率。用PVC-CHA蒸发计在恒温恒湿室中测定了质量扩散率。结果表明:气体渗透率显著高于液体渗透率，其纵向、径向、切向依次递减;马相思纵向和横向渗透率各向异性比明显低于其他已发表树种。然而，渗透率和扩散率从径向到切向的明显各向异性比率是一个值得关注的问题，因为它们会加剧干燥过程中的缺陷。此外，金合欢具有较高的渗透性和扩散性，与其他一些已报道的化合物相比，其干燥速度相对较快。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Maderas-ciencia Y Tecnologia 工程技术-材料科学：纸与木材

CiteScore

2.60

自引率

13.30%

发文量

审稿时长

>12 weeks

期刊介绍： Maderas-Cienc Tecnol publishes inedits and original research articles in Spanish and English. The contributions for their publication should be unpublished and the journal is reserved all the rights of reproduction of the content of the same ones. All the articles are subjected to evaluation to the Publishing Committee or external consultants. At least two reviewers under double blind system. Previous acceptance of the Publishing Committee, summaries of thesis of Magíster and Doctorate are also published, technical opinions, revision of books and reports of congresses, related with the Science and the Technology of the Wood. The journal have not articles processing and submission charges.