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Hardwood drying intensification

100%

Pinchewska O., Kompanets S.

Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology

|

2013

|

tom 84

2

Natural drying of fruit trees wood

100%

Lisowski A., Grela M., Sypula M., Swietochowski A., Dabrowska-Salwin M.

Annals of Warsaw University of Life Sciences - SGGW. Agriculture

|

2015

|

nr 65 Agric.Forest Eng.

The aim of this study was to evaluate the fit of mathematical models for drying wet wood chunks with a length of 60 ±1 mm and a diameter of 10 ±2 mm and dry wood chips size of 40 ±10 mm obtained from the branches of fruit trees stored for a 6--months period under natural conditions. Biomass moisture was measured on a monthly basis. For moisture ratio the parameters of nine mathematical models and their statistical evaluation were developed. It was found that wet wood chunks had a large shrinkage (15%) which was probably due to the high content of soft wood tissue in the branches. During the storage of wet wood chunks the moisture decreased significantly, from 47.57 to 10.84%, and the dry chips only slightly (from 11.85 to 8.04%), and in both cases at the end of drying the biomass reached an equilibrium moisture. The best model reflecting changes moisture ratio of wet wood chunks is the Page's model, but the Wang's, Singh's and logarithmic models, may also be used for drying a moist biomass under natural conditions. Drying of dry wood chips is best represented by the logarithmic model, but for this kind of material a Page's, Wang's and Singh's, two term and Midilli's et al. models can be used. Modeling in natural conditions requires consideration of ambient conditions, especially air temperature and relative humidity.

3

Aktivacionnye processy pri sushke drevesiny

100%

Princevskaja E., Olejjnik R., Spirochkin A.

Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology

|

2013

|

tom 84

4

Accelerated drying of blanks from red oak wood (Quercus rubra)

100%

Pinchevska E., Spirochkin A., Boryachinski V.

Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology

|

2018

|

tom 103

5

The influence of drying on the sorption properties of polyethylene wax treated wood

100%

Lesar B., Sever Skapin A., Humar M.

Drewno. Prace Naukowe. Doniesienia. Komunikaty

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2011

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tom 54

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nr 185

The importance of the use of waxes in the wood industry has been increasing, particularly in Europe, since consumers, due to their increased environmental awareness, avoid using biocidally treated wood and wood from tropical forests. In this research two water-repellent emulsions in various concentrations were used: polyethylene and oxidised polyethylene wax emulsion. The performance of wax treated Norway spruce (Picea abies) and beech (Fagus sylvatica) wood was tested in two sorption experiments: conditioning in high relative air humidity (vapour diffusion) and non-continuous dipping (liquid flow). The sorption properties of oven and vacuum dried impregnated specimens were determined. During conditioning, wax treated Norway spruce specimens, vacuum and oven dried, had the same moisture content as control specimens; while treated vacuum dried beech had up to 25% lower moisture content than the parallel control specimens. An even higher difference was evident in volume changes of vacuum and oven dried beech specimens during the sorption test.

6

Suszenie para przegrzana

84%

W K.

Biuletyn Informacyjny Ośrodka Badawczo-Rozwojowego Przemysłu Płyt Drewnopochodnych w Czarnej Wodzie

|

1994

|

tom 35

|

nr 2

105

7

Thermal modification of wood by the method of thermo-mechanical dehydration with pressure drop

84%

Zashchepkina N. M., Prokopivich O. V., Makarenko D. S.

Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology

|

2019

|

tom 106

8

The selected effects of high temperature air-steam mixture wood drying

84%

Konopka A., Baranski J., Wierzbowski M.

Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology

|

2015

|

tom 92

9

The influence of high temperature wood drying conditions using air-steam mixture on its properties

84%

Konopka A., Baranski J., Hurakova T., Klement I.

Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology

|

2015

|

tom 90

10

Investigation of relation between moisture content decrease and water mass flow removed from a kiln

84%

Widlak H., Majka J.

Electronic Journal of Polish Agricultural Universities. Series Wood Technology

|

2004

|

tom 07

|

nr 2

Currently, the basic way of wood moisture content decrease control during drying process is measurement of that moisture content with resistance meters on a random selection of timber items. The results of that measurements are particularly unreliable, especially at wood moisture content below fibre saturation point and, on the other hand, they are influenced by accuracy of samples choice. Research considered the problem of monitoring of water mass flow that is removed with air in order to control the course of drying process. As a results of experiments, during drying of pinewood timber, it was stated that the monitoring of outlet air state allows for the verification of measurements of moisture content with resistance meters. The monitoring of air state at inlet and outlet of a kiln creates the possibilities of a more complex control of wood drying process.

11

Dauerhaftigkeit und freilufttrocknung des holzes in der polnischen und deutschen literatur vom XVII bis XX jahrhundert

67%

Dobrowolska E.

Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology

|

2013

|

tom 82

12

Suszenie drewna w wysokich temperaturach

67%

W K.

Biuletyn Informacyjny Ośrodka Badawczo-Rozwojowego Przemysłu Płyt Drewnopochodnych w Czarnej Wodzie

|

2001

|

tom 42

|

nr 3-4

147-148

13

Zielone swiatlo na suszenie w podczerwieni w wiekszym zakresie

67%

W K.

Biuletyn Informacyjny Ośrodka Badawczo-Rozwojowego Przemysłu Płyt Drewnopochodnych w Czarnej Wodzie

|

1999

|

tom 40

|

nr 4

311

14

Mode for hot air drying of alder blanks that retain the colour acquired during the steaming process

67%

Dziurenda L.

Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology

|

2021

|

tom 114

15

Kontrolowanie emisji z suszarek za pomoca mokrego elektrofiltru

67%

W K.

Biuletyn Informacyjny Ośrodka Badawczo-Rozwojowego Przemysłu Płyt Drewnopochodnych w Czarnej Wodzie

|

1994

|

tom 35

|

nr 1

46

16

Ozon und Holz

67%

Dobrowolska E., Kozakiewicz P., Matejak M.

Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology

|

2013

|

tom 82

17

Nowe suszarki pomagaja w integracji swierka kanadyjskiego w zakladzie Fostera

67%

W K.

Biuletyn Informacyjny Ośrodka Badawczo-Rozwojowego Przemysłu Płyt Drewnopochodnych w Czarnej Wodzie

|

1999

|

tom 40

|

nr 3

208-209

18

Influence of steam drying process on wood mechanical properties

67%

Baranski J., Wierzbowski M.

Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology

|

2012

|

tom 77

Influence of Steam Drying Process on Wood Mechanical Properties. Results of influence of gas-steam mixture drying process on mechanical properties of material are presented. Wood species, namely oak (Quercus L.), beech (Fagus L.), pine (Pinus L.) and spruce (Picea K.) from the northern part of Pomerania region in Poland, were subject of air-steam mixture drying process in a laboratory kiln especially arranged for that reason. Measurements of the global coefficient of elasticity and bending strength for steam dried and air dried samples, as a reference, allowed to reveal the effect of wood steam drying on mechanical properties of wood. It has been recognized that air-steam wood drying causes a small decrease of the mechanical properties of the wood. While the color changes have been observed directly after process, changes in mechanical properties have to be measured. During experiments time of drying process was shorten and satisfactory results were obtained.

19

Urzadzenia do mokrego wytracania elektrostatycznego

59%

W K.

Biuletyn Informacyjny Ośrodka Badawczo-Rozwojowego Przemysłu Płyt Drewnopochodnych w Czarnej Wodzie

|

1994

|

tom 35

|

nr 3

246-247

20

The innovative experimental rig for wood steam drying at atmospheric pressure

59%

Baranski J., Wierzbowski M.

Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology

|

2012

|

tom 77

The high cost of fossil fuel and soaring consumer interest have encouraged people in the wood industry to look for faster and more energy-efficient methods to dry lumber. The air-steam mixture as medium of drying process was used in a laboratory kiln especially arranged for that reason. Experimental rig is based on automatic control system. At the time of drying measurements of the internal temperature, wood temperature, moisture content and humidity can be performed. During experiments time of drying process was shorten and satisfactory results were obtained.

Ograniczanie wyników

Hardwood drying intensification

Natural drying of fruit trees wood

Aktivacionnye processy pri sushke drevesiny

Accelerated drying of blanks from red oak wood (Quercus rubra)

The influence of drying on the sorption properties of polyethylene wax treated wood

Suszenie para przegrzana

Thermal modification of wood by the method of thermo-mechanical dehydration with pressure drop

The selected effects of high temperature air-steam mixture wood drying

The influence of high temperature wood drying conditions using air-steam mixture on its properties

Investigation of relation between moisture content decrease and water mass flow removed from a kiln

Dauerhaftigkeit und freilufttrocknung des holzes in der polnischen und deutschen literatur vom XVII bis XX jahrhundert

Suszenie drewna w wysokich temperaturach

Zielone swiatlo na suszenie w podczerwieni w wiekszym zakresie

Mode for hot air drying of alder blanks that retain the colour acquired during the steaming process

Kontrolowanie emisji z suszarek za pomoca mokrego elektrofiltru

Ozon und Holz

Nowe suszarki pomagaja w integracji swierka kanadyjskiego w zakladzie Fostera

Influence of steam drying process on wood mechanical properties

Urzadzenia do mokrego wytracania elektrostatycznego

The innovative experimental rig for wood steam drying at atmospheric pressure