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Titolo:
Heat transfer and friction correlations and thermal performance analysis for a finned surface
Autore:
Bilen, K; Akyol, U; Yapici, S;
Indirizzi:
Ataturk Univ, Fac Engn, Dept Chem Engn, TR-25240 Erzurum, Turkey Ataturk Univ Erzurum Turkey TR-25240 Chem Engn, TR-25240 Erzurum, Turkey Ataturk Univ, Dept Mech Engn, TR-25240 Erzurum, Turkey Ataturk Univ Erzurum Turkey TR-25240 Mech Engn, TR-25240 Erzurum, Turkey Univ Trakya, Dept Mech Engn, TR-59860 Corlu Tekirdag, Turkey Univ Trakya Corlu Tekirdag Turkey TR-59860 -59860 Corlu Tekirdag, Turkey
Titolo Testata:
ENERGY CONVERSION AND MANAGEMENT
fascicolo: 9, volume: 42, anno: 2001,
pagine: 1071 - 1083
SICI:
0196-8904(200106)42:9<1071:HTAFCA>2.0.ZU;2-2
Fonte:
ISI
Lingua:
ENG
Soggetto:
PERFORATED RIBS; PIN; ARRAYS; WALLS; FLOW;
Keywords:
finned surfaces; heat transfer enhancement; thermal performance; cylindrical fins; performance analysis;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
--discip_BC--
Citazioni:
18
Recensione:
Indirizzi per estratti:
Indirizzo: Yapici, S Ataturk Univ, Fac Engn, Dept Chem Engn, TR-25240 Erzurum, TurkeyAtaturk Univ Erzurum Turkey TR-25240 TR-25240 Erzurum, Turkey
Citazione:
K. Bilen et al., "Heat transfer and friction correlations and thermal performance analysis for a finned surface", ENERG CONV, 42(9), 2001, pp. 1071-1083

Abstract

In the present work, the heat transfer and friction loss characteristics were investigated experimentally, employing a finned heating surface kept ata constant temperature of 45 degreesC in a rectangular channel through which air was passed as working fluid. The position of the cylindrical fins attached on the surface was arranged either in-line or staggered. The parameters for the study were chosen as Reynolds number (3700-30 000), depending on hydraulic diameter, the distance between fins in the flow direction (S-y/D = 1.96-4.41) and fin arrangement. The variation of Nusselt number with these parameters was determined and presented graphically. For both fin arrangements, it was found that increasing Reynolds number increased Nusselt number, and maximum heat transfer occurred at S-y/D = 2.94. Correlations for Nusselt number and friction factor were developed for both fin arrangements and smooth channel, and the thermal performances of the arrangements were also determined and compared with respect to heat transfer from the same surface without fins. With the staggered array, a heat transfer enhancement upto 33% at constant pumping power was achieved. (C) 2001 Elsevier Science Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 31/05/20 alle ore 13:22:17