Engineering, 16.10.2019 02:00 ant5129
The convection coefficient for flow over a solid sphere may be determined by submerging the sphere, which is initially at 25 °c, into the flow, which is at 75 °c, and measuring its surface temperature at some time during the transient heating process. if the sphere has a diameter of 0.1 m, a thermal conductivity of 22 w/(m·k), and a thermal diffusivity of 0.40 ×10-5 m2/s, at what time will a surface temperature of 60 ºc be recorded if the convection coefficient is 300 w/(m2·k)?
Answers: 2
= 25 degree C = 298 k
= 60 degree C = 333 k
= 75 degree C = 348 L
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The convection coefficient for flow over a solid sphere may be determined by submerging the sphere,...
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