KNOWN: Dimensions and thermal conductivity of food/beverage container. Inner and outer
FIND: Heat flux through container wall and total heat load.
ASSUMPTIONS: (1) Steady-state conditions, (2) Negligible heat
KNOWN: Diameter and initial temperature of steel balls cooling in air.
FIND: Time required to cool to a prescribed temperature.
ASSUMPTIONS: (1) Negligible radiation effects, (2) Constant properties.
ANALYSIS: Applying Eq. 5.10 to a
KNOWN: Temperature dependence of the thermal conductivity, k(T), for heat transfer through a
FIND: Effect of k(T) on temperature distribution, T(x).
ASSUMPTIONS: (1) One-dimensional conduction, (2) Steady-state conditions, (3) No i
KNOWN: Heat generation in a buried spherical container.
FIND: (a) Outer surface temperature of the container, (b) Representative isotherms and heat
ASSUMPTIONS: (1) Steady-state conditions, (2) Soil is a homogeneous medi
An alternative (and easier) way to calculate qcond,i was to use Table 3.4, for a fin of uniform cross-section,
with a prescribed temperature,
P is the perimeter of the fin, Ac the cross-sectional area, = 0 , =
qf = qcond,i