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Início Arquivos Thermal Letter Representantes Futuras reuniões Assembléia das Conferências Internacionais de Transferência de Calor
International Heat Transfer Conference 4

ISSN: 2377-424X (online)
ISSN: 2377-4371 (flashdrive)

SOME CONSIDERATIONS ON CRITICAL HEAT FLUX IN ROD CLUSTERS IN ANNULAR DISPERSED VERTICAL UPWARD TWO-PHASE FLOW

G.P. Gaspari
CISE - Segrate (Milan), Italy

A. Hassid
CISE - Segrate (Milan), Italy

Giuseppe Peter Vanoli
CISE, Segrate (tlilano) Italy; Dipartimento di Medicina e Scienze della Salute "Vincenzo Tiberio", Università del Molise, Via Francesco De Sanctis 1, 86100, Campobasso, ITALY

DOI: 10.1615/IHTC4.690
pages 1-14

Resumo

Critical heat flux in rod clusters is being investigated at CISE in connection with the CIRENE reactor development (pressure tube, D2O moderated, evaporating H20 cooled). The studies are being carried out on 19 rod clusters (7 rod clusters have also been considered) to determine the influence of some geometrical parameters.
This paper aims to summarize the results so far obtained, in particular with reference to the influence of a number of parameters, such as rod diameter, rod spacing, length, number of rods, radial power distribution, etc. Experimental data are studied according to an approach based on a rod-centered subchannel division of the cross section.
A brief analysis is also given of the limitations of the existing correlations.

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