ISSN Online: 2377-424X
ISBN Print: 0-85295-345-3
International Heat Transfer Conference 10
COOLING CHARACTERISTICS OF A VERTICAL PLATE HEATER IN A COMPOSITE ENCLOSURE FILLED WITH PCM/AIR LAYERS
Аннотация
This paper presents a numerical study
concerning transient cooling characteristics of
a vertical heat-generating plate sandwiched
between a layer of phase change material (n-Octadecane)
and a layer of air, forming a
composite vertical rectangular enclosure.
Numerical results are presented to unveil the
characteristics of heat dissipation from the
heater plate through the PCM- and air-filled
composite enclosure. The results demonstrate
that the PCM-filled subenclosure is more
capable of dissipating heat from the hot plate
than the air-filled subenclosure. In
particular, the maximum temperature of the
heat-generating plate can be maintained to
approach a steady-state value mainly through
the effective cooling capacity of the PCM
subenclosure due to its latent heat absorption
associated with solid-liquid phase change
phenomenon. Parametric effects of the
modified Rayleigh number, the modified Stefan
number, and the subcooling factor on the
cooling of the plate heater are discussed.