COURSE TITLE: HEAT TRANSFER-II
(DURATION 1 HOUR)
QUESTION:
A sphere with a...
Engineering, 20.04.2021 14:00 broomssymphonie
COURSE TITLE: HEAT TRANSFER-II
(DURATION 1 HOUR)
QUESTION:
A sphere with a diameter of 30 mm is initially at a temperature of 450 oC, then released into a medium with a temperature of 95 oC;
a) the time required for the temperature of the sphere to drop to 150 oC,
b) the time needed to equalize the temperature,
c) calculate the equilibrium temperature.
k = 35 W / mK,
h = 10 W / m^2K
ρ= 7800 kg / m^3
C = 460 J / kg. k
Answers: 1
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