Abonnement à la biblothèque: Guest

ISSN Online: 2377-424X

ISBN Print: 0-89116-909-1

International Heat Transfer Conference 9
August, 19-24, 1990 , Jerusalem, Israel

THE INTENSIFICATION OF HEAT TRANSFER IN TRANSITION FROM LAMINAR TO TURBULENT FLOW

Get access (open in a dialog) DOI: 10.1615/IHTC9.690
pages 199-204

Résumé

The combination of thermally stabilized combustion with a contiguous heat exchanger to generate steam is used as an illustration of the potential for the intensification of heat transfer. The confinement of a thermal stabilized combustor allows the use of high velocity flow of the burned gases inside the tubes of a water boiler, thereby increasing the rate of heat transfer many fold as compared to the gaseous and external convection or low-velocity internal convection of conventional furnaces and boilers. The transition from laminar to developing turbulent motion which occurred in the experimental heat exchanger produces a further, several-fold increase in the heat transfer coefficient relative to either fully developed laminar or turbulent convection. Furthermore, this closely integrated combination of combustion and heat exchange results in the virtual elimination of NO and CO from the, exiting gases.