ISSN Online: 2377-424X
ISBN Print: 0-85295-345-3
International Heat Transfer Conference 10
THE INFLUENCE OF SURFACE STATE ON HEAT TRANSFER BETWEEN A WALL AND A NUCLEATE BOILING LIQUID
Abstract
This paper presents an experimental study of a heated wall, which is cooled by a boiling liquid flow.
An experimental approach was developed using a set of thermocouples for temperature readings within the wall. These measurements were associated with two different numerical approaches:
• interpolation-extrapolation, based exclusively on the different thermocouple measurements,
•by solving the problem of inverse conduction using the boundary-element method.
Both of these techniques allow the temperature field and the heat flux to be determined at the surface of the cooled wall.
This methodology allowed analysis of the influence of different surface states on heat transfer: among the different surfaces studied, the "extended surface" type presented the best exchange performances.
An experimental approach was developed using a set of thermocouples for temperature readings within the wall. These measurements were associated with two different numerical approaches:
• interpolation-extrapolation, based exclusively on the different thermocouple measurements,
•by solving the problem of inverse conduction using the boundary-element method.
Both of these techniques allow the temperature field and the heat flux to be determined at the surface of the cooled wall.
This methodology allowed analysis of the influence of different surface states on heat transfer: among the different surfaces studied, the "extended surface" type presented the best exchange performances.