Resumen

ROMERO-MENDEZ, Ricardo; MIHIR, Sen; WALFRE, Franco  y  HERNANDEZ-GUERRERO, Abel. Efecto en la hidrodinámica y transferencia de calor del desfasamiento entre placas de un intercambiador de calor de placas onduladas. INCI [online]. 2001, vol.26, n.9, pp.383-389. ISSN 0378-1844.

Summary A numerical program was used to obtain information on the velocity, pressure and temperature fields of a channel geometry that resembles the central part of a corrugated plate heat exchanger. The focus is to analyze the effect that dephasing sinusoidal plate corrugations has on the overall heat transfer performance of the heat exchanger. The problem is described by the two-dimensional, steady-state flow field and heat transfer in a channel formed by a pair of equal amplitude and wavelength sinusoidal plates at different temperatures. A sufficiently long channel with several corrugations is considered so that periodic boundary conditions over one wavelength are assumed in the flow inside the inner corrugations and the flow is assumed to be laminar. Results involving local and overall heat transfer as a function of plate dephasing are presented. The pressure drop across a single corrugation is also considered. An optimum conFiguration is determined for which the ratio of dimensionless heat transfer to dimensionless pressure drop is largest. The results are explained in the light of the hydrodynamic and thermal characteristics obtained in the numerical simulation.

Palabras clave : Intercambiadores de Calor ; Placas Onduladas ; Convección de Calor .