Uticaj koraka rebara na performanse prelaza toplote slobodnom konvekcijom kod dvocjevnih orebrenih površina
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Jul 24, 2019
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Apstrakt
U ovom radu tretira se uticaj koraka rebara na prelaz toplote kod đvocijevnog konvektora. Istraživanje je vršeno sa slijedećim performansama: vanjski prečnik cijevi d = 14 mm; razmak izmedju rebara
- korak rebara s = 2, 4, 6 i 8 mm; veličina rebara 100 – ¢ 60 – ¢ 0,5 mm i razmak izmedju cijevi 50 mm. Temperatura cijevi je varirana izmedju 50 i 110°C. Za vrijeme ispitivanja ispitna sekcija se nalazila u maski vi-sine 200 mm. Na osnovu pretpostavljenog modela i rezultata ispitivanja izvedene su korelacije izmedju Nu i Ra-broja. Učinjen je pokušaj da se nađe opšta korelacija za sve ispitivane geometrije.
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Kako citirati
MIRKOVIĆ, Zdravko; KOPRIVICA, Jelena.
Uticaj koraka rebara na performanse prelaza toplote slobodnom konvekcijom kod dvocjevnih orebrenih površina.
Zbornik Međunarodnog kongresa i izložbe o KGH, [S.l.], v. 8, n. 1, p. 95-102, july 2019.
Dostupno na: <https://izdanja.smeits.rs/index.php/kghk/article/view/5062>. Datum pristupa: 16 oct. 2026
Sekcija
Komisija B1
Reference
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[2] CHADDOCK, J. B. : Free convection heat transfer from vertical rectangular fin arrays, ASHRE J., August, 1970.
[3] EDWARDS, J. A., CHADDOCK, J.B. : An experimental investigati- on of the radiation and free convection heat transfer from a cylind-rical disk extended surface, ASHRE Trans., Vol. 69, 1963.
[4] KNUDSEN, J.G., PAN, R.B. : Natural convection heat transfer from transverse finned tubes, Chem. Engn. Symp., Vol. 61, No. 57, 1965.
[5] LEVY, E. K. : Optimum plate spacing for laminar natural convection heat tr nsfer from paralel vertical isothermal flat plates, J. of heat tran, fer, Vol. 93, No. 4, 1971.
[6] McADAMS, W. H. : Heat transmission, McGraw-HiU, N. Y., 1954.
[7] WELLING, J. R., WOOLDRIDGE, C. B. : Free convection heat tran-sfer coefficient from rectangular vertical fins, J. of heat transfer, Vol. 87, No. 4, 1965.
[8] FABRE, O. : Numerical methods for the determination of fins efficiency, Ph. D. thesis, University of London, King – ™ s College, 1974.
[2] CHADDOCK, J. B. : Free convection heat transfer from vertical rectangular fin arrays, ASHRE J., August, 1970.
[3] EDWARDS, J. A., CHADDOCK, J.B. : An experimental investigati- on of the radiation and free convection heat transfer from a cylind-rical disk extended surface, ASHRE Trans., Vol. 69, 1963.
[4] KNUDSEN, J.G., PAN, R.B. : Natural convection heat transfer from transverse finned tubes, Chem. Engn. Symp., Vol. 61, No. 57, 1965.
[5] LEVY, E. K. : Optimum plate spacing for laminar natural convection heat tr nsfer from paralel vertical isothermal flat plates, J. of heat tran, fer, Vol. 93, No. 4, 1971.
[6] McADAMS, W. H. : Heat transmission, McGraw-HiU, N. Y., 1954.
[7] WELLING, J. R., WOOLDRIDGE, C. B. : Free convection heat tran-sfer coefficient from rectangular vertical fins, J. of heat transfer, Vol. 87, No. 4, 1965.
[8] FABRE, O. : Numerical methods for the determination of fins efficiency, Ph. D. thesis, University of London, King – ™ s College, 1974.