Wszystkie pola: Karabay, H. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Manufacturing of Al-Zr Thermal-resistant Alloys for Transmission Lines
Autorzy:: Erturk, A.
Guven, E.
Karabay, S.
Powiązania:: https://bibliotekanauki.pl/articles/1401363.pdf
Data publikacji:: 2015-04
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 81.05.Bx
88.80.H
83.50.Uv
81.70.Jb
81.40.Ef
81.70.Bt
Opis:: The present transmission lines of populous cities will have to be changed with an ability to work at higher temperatures without any weight and cross section changes. Innovative thermal-resistant alloy conductors (T-ACSR) operate in the range of about 150-200°C instead of 75°C which is the standard ACSR type conductor service temperature. In this study, the manufacturing procedure of Al-Zr alloy wire, used as high-temperature conductor wires, have been introduced. The Al-Zr alloy has been cast in a permanent mold than being extruded to a diameter of 10 mm at 400°C. After that the extruded rods have been cold drawn to a diameter of 3.02 mm. Elongation and tensile strength values of the cold drawn wire have been achieved by tensile test at elevated temperatures. Also, microstructural analysis and dispersion hardening procedure have been investigated. The results show that tensile strength and thermal-resistant property are improved by the addition of Zr.
Źródło:: Acta Physica Polonica A; 2015, 127, 4; 1292-1294
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Investigation of heat insulation performance of hollow clay bricks filled with perlite
Autorzy:: Arıcı, M.
Yılmaz, B.
Karabay, H.
Powiązania:: https://bibliotekanauki.pl/articles/1068608.pdf
Data publikacji:: 2016-07
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 88.05.Sv
44.10.+i
44.25.+f
44.40.+a
Opis:: In this study, the possibility of enhancing heat insulation performance of hollow bricks by filling the cavities with perlite is investigated. A conjugate heat transfer by conduction, convection and radiation in different hollow bricks are analyzed numerically to assess their thermal performance. Calculations are performed for three scenarios for each type of hollow brick: (i) cavities are filled with air, (ii) half of the cavities are filled with perlite while the other half is filled with air, (iii) all cavities are filled with perlite. The benefit of filling cavities with perlite is justified quantitatively for each investigated hollow brick type. It is concluded that the enhancement in insulation performance can be up to 15.6% and 27.5% for half-perlite and full-perlite cases, respectively, depending on the brick type.
Źródło:: Acta Physica Polonica A; 2016, 130, 1; 266-268
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Effect of Aspect Ratio on Natural Convection in a Cavity with Wavy Walls
Autorzy:: Arici, M.
Kan, M.
Karabay, H.
Powiązania:: https://bibliotekanauki.pl/articles/1401974.pdf
Data publikacji:: 2015-08
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 44.25.+f
47.15.Rq
47.55.P-
47.20.Bp
Opis:: In this study, flow characteristics and natural convection in a cavity with two wavy walls is studied numerically. The wavy walls of the cavity are isothermal and at different temperatures while other straight walls are adiabatic. The fluid considered inside the cavity is air having Prandtl number of 0.71. A parametric study is conducted for various aspect ratios (1 ≤ AR ≤ 5), Rayleigh numbers (10³ ≤ $Ra_{H}$ ≤ 10⁶) and inclination angles (0° ≤ θ ≤ 180°). Streamlines, isotherms and local and mean Nusselt numbers are presented to show the effect of the investigated parameters on the flow field and heat transfer.
Źródło:: Acta Physica Polonica A; 2015, 128, 2B; B-197-B-200
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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