کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
159660 457043 2006 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Prediction of vapor–moisture equilibriums for a wood–moisture system using a modified UNIQUAC model
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Prediction of vapor–moisture equilibriums for a wood–moisture system using a modified UNIQUAC model
چکیده انگلیسی

A modified UNIQUAC model has been extended to describe and predict the equilibrium relative humidity and moisture content for wood. The method is validated over a range of moisture content from oven-dried state to fiber saturation point, and over a temperature range of 20–70 °C. Adjustable parameters and binary interaction parameters of the UNIQUAC model were estimated from experimental data for Caribbean pine and Hoop pine as well as data available in the literature. The two group-interaction parameters for the wood–moisture system were consistent with using function group contributions for H2OH2O, –OH and –CHO. The result reconfirms that the main contributors to water adsorption in cell walls are the hydroxyl groups of the carbohydrates in cellulose and hemicelluloses. This provides some physical insight into the intermolecular force and energy between bound water and the wood material.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Science - Volume 61, Issue 18, September 2006, Pages 6077–6084
نویسندگان
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