Delijski, Nenčo S., 1945- Modelling of the unilateral convective heating process of furniture elements before their lacquer coating / Nenčo S. Delijski, Ladislav Dzurenda, Neno Trichkov, Zhivko Gochev, Dimitar Angelski. -- Obr., tab. -- Lit. - Two mutually connected 1D mathematical models have been created and solved. The first of them allows the computation of the non-stationary temperature distribution along the thickness of subjected to unilateral convective heating furniture elements before their subsequent lacquer coating. The second one allows the computation of the non-stationary distribution of temperature, t, along the thickness of the carrying rubber band, on which the non-heated surface of the furniture elements lies. A software program has been prepared for the simultaneous numerical solution of both models with the help of an explicit scheme of the finite difference method, which has been input in the calculation environment of Visual Fortran Professional. With the help of the program, computations have been made for the determination of the 1D change of t in flat oak elements and in the rubber band, on which the non-heated surfaces of the elements lie. In the simulation experiments the oak elements were with thickness of 16 mm, length of 1.2 m, initial temperature of 20 oC, and moisture content of 8 %. The duration of the elements’ unilateral convective heating by air with temperature of 100 oC and speed of 2 m·s-1, 5 m·s-1, and 8 m·s-1 was equal to 10 min. The rubber band was with thickness of 4 mm, width of 0.8 m, initial temperature of 20 oC, and the temperature of the surrounding air was 20 oC. The computer solutions of both mathematical models could be used for visualization and technological analysis of the temperature change along the thickness of furniture elements made of different wood species, different thickness, length and moisture content, during their unilateral convective heating with different temperature and speed of the circulated air prior to their lacquering.

In Acta Facultatis Xylologiae Zvolen : vedecký časopis Drevárskej fakulty. -- Zvolen : Technická univerzita vo Zvolene, 2016. -- ISSN 1336-3824. -- Roč. 58, č. 2 (2016), s. 51-64

I. Dzurenda, Ladislav, 1955-
II. Trichkov, Neno
III. Gochev, Zhivko
IV. Angelski, Dimitar
V. Acta Facultatis Xylologiae Zvolen : vedecký časopis Drevárskej fakulty. -- Roč. 58, č. 2 (2016), s. 51-64

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