NATURAL-CONVECTION HEAT-TRANSFER FROM ARRAYS OF ISOTHERMAL TRIANGULARFINS IN AIR

Measurements of the heat transfer to air by natural convection from ar rays of isothermal triangular fins on a vertical base plate are report ed for several array geometries, for a large range of Rayleigh number, and for two orientations (vertical fins and horizontal fins). The dat a are believed to be the first available for this important geometry. A single equation is provided that correlates the measured Nusselt num bers for the vertical orientation with an rms error of 4.8 percent. Th e horizontal fin orientation was shown to have inferior heat transfer performance.