Drying of beech (<i>Fagus sylvatica</i> L.) timber in oscillation climates: drying time and quality

Milić, Goran; Kolin, Branko; Lovric, Aleksandar; Todorović, Nebojša; Popadić, Ranko

doi:10.1515/hf-2012-0203

Cited by 9 publications

(10 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…For example, Mili et al [47] compared conventional drying to oscillating the EMC or temperature for drying beech (Fagus sylvatica L.) and found less case-hardening for schedules that oscillated EMC or temperature; however, oscillations of both temperature and EMC did not reduce case-hardening [47]. De la Cruz-Lefvre et al [48] determined that the mechano-sorptive effect, activated by MC oscillations, leads to a significant stress relaxation [48].…”

Section: Drying Schedulesmentioning

confidence: 99%

A Decade of Improved Lumber Drying Technology

Bond

Espinoza

2016

Curr Forestry Rep

View full text Add to dashboard Cite

In this paper, we comprehensively review the relevant literature published from 2005 to 2016, focused on lumber drying and provide a summary of where we feel future research will focus. Drying is a critical part of most wood products manufacturing process, and the methods used and proper control are key to achieving the appropriate production level, quality, and costs. While a combination of drying methods may be used, most lumber is dried in a kiln at some point in the process. The most common commercial kilns can be classified as conventional, high temperature, and vacuum; however, there continues to be some interest in solar and compression drying. While no new drying technologies have been proposed, work has continued on improving the existing methods. Control of the drying process varies with the type of kiln used, the species being dried and the temperatures used in the process; however, it usually involves some type of measurement of the moisture content of the wood being dried. The development of new methods for controlling the drying process focuses on new ways to measure moisture content or moisture content variation, temperature drop across the load, and drying stresses. While wood quality can be defined differently by its various users, for example, industrial or end users, certain aspects of quality remain constant across these groups, such as minimizing warp, checks, and splits, and discoloration, and maintaining or enhancing mechanical properties. New schedules have been proposed to increase drying rate and improve drying quality. Methods to reduce drying defects and improve its quality have focused mainly on mechanical restraint to prevent warp, better understanding of defect formation, and pre-treatments to speed up the drying process or reduce final moisture content variation. Finally, concerns regarding the environmental impacts of wood drying, most importantly the high energy demands and emissions, have increased in importance as concerns about sustainability and health issues become more mainstream.

show abstract

Section: Drying Schedulesmentioning

confidence: 99%

A Decade of Improved Lumber Drying Technology

Bond

Espinoza

2016

Curr Forestry Rep

View full text Add to dashboard Cite

show abstract

“…The fi nal, XII drying cycle was used for repeating the test run that showed the best results regarding time and quality. In each drying cycle (65-70 boards per run), 30 boards were selected and stacked in the central part of the stack to be used for the assessment of drying quality at the end of the process (Milić et al, 2013). Timber was dried from green state to target 9 % moisture content, measured by the probes in the kiln.…”

Section: Materijal I Metodementioning

confidence: 99%

“…This topic was researched by several authors ( Welling et al, 2003). Previous researches on oscillating drying have already shown the potential advantages of such a schedule in the sense of shorter drying time and better drying quality of wood (Milić et al, 2013).…”

Section: Introduction 1 Uvodmentioning

confidence: 99%

Energy Consumption of Beech Timber Drying in Oscillation Climates

et al. 2014

Self Cite

View full text Add to dashboard Cite

show abstract

“…In their study, Hasan and Langrish [10] compared the performance of two solar kiln designs for wood drying using a numerical simulation. Milić et al [12] presented the influence of oscillating climate conditions during the conventional drying of beech timber on drying time and drying quality. Milić et al [12] presented the influence of oscillating climate conditions during the conventional drying of beech timber on drying time and drying quality.…”

Section: Introductionmentioning

confidence: 99%

Assessment of a solar‐assisted infrared timber drying system

Aktaş

Ceylan

Ergün

et al. 2017

Env Prog and Sustain Energy

View full text Add to dashboard Cite

This study investigates convective‐infrared drying characteristics of timber. The biggest disadvantage of infrared heating systems is the uncontrollable rise of the surface temperature up to extremely high values, which causes damage to the product. In this study, the power of an infrared system was controlled and adjusted according to the surface temperature of the product. In doing so, the surface temperature of the infrared heater was prevented from reaching up to values that could damage the product. During the analysis, the surface temperature of the timbers was kept at an average of 65°C, while the bottom temperature was kept at an average of 45°C. The air collector used in the system was found to be 50% efficient. At the end of a 13‐h drying period, the moisture content of pine timbers could be reduced from 1.42 to 0.0948 g water/g dry matter. During the system analysis, parameters such as moisture content, mass diffusion coefficient, and useful energy rate were taken into consideration. © 2017 American Institute of Chemical Engineers Environ Prog, 36: 1875–1881, 2017

show abstract

Drying of beech (Fagus sylvatica L.) timber in oscillation climates: drying time and quality

Cited by 9 publications

References 15 publications

A Decade of Improved Lumber Drying Technology

A Decade of Improved Lumber Drying Technology

Energy Consumption of Beech Timber Drying in Oscillation Climates

Assessment of a solar‐assisted infrared timber drying system

Contact Info

Product

Resources

About