INENCO   05446
INSTITUTO DE INVESTIGACIONES EN ENERGIA NO CONVENCIONAL
Unidad Ejecutora - UE
artículos
Título:
Conjugate heat transfer in a two stage trapezoidal cavity stack
Autor/es:
ANA MARÍA ARAMAYO; SONIA ESTEBAN; LUIS CARDÓN
Revista:
LATIN AMERICAN APPLIED RESEARCH
Editorial:
PLAPIQUI(UNS-CONICET)
Referencias:
Año: 2009 vol. 39 p. 1 - 9
ISSN:
0327-0793
Resumen:
The flow pattern and heat transfer in a pair of cavities stacked one over the other, with a separating solid plate in between, are numerically studied. The configuration idealizes two trays in a multiple effect desalinator. The work focuses on the computational modeling of the two conjugate recirculations in the cavities, conductively coupled through the thin separating plate. The effect of the plate physical parameters, thickness and conductivity, on the heat transfer are also analyzed. Plates made of glass, steel and aluminum of 2, 3, 4 and 6 mm are studied. Cavity flow and temperature patterns, depicted by streamlines, velocity fields, and isotherms are analyzed for steady state. Attention was paid to the temperature variation over, and heat flow through the separating plate. Global Nuselt numbers are calculated for the bottom side of the lower cavity. Data are obtained for air as the working fluid (Pr=0.7) in the range 103<RaH<107.3<RaH<107.