Assume and then justify that the sphere between as a

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Reference no: EM13622802

The heat transfer Coefficient for air flowing over a sphere is to be determined by observing the temperature -time history of a sphere fabricated from pure copper. The sphere, which is 25 mm in diameter is at 95C before it is inserted into an airstream having a temepature of 27 C. A thermocouple on the outer surfaceof the sphere inddicates a temprature of 55 C after a time interval of 120 seconds. Assume and then justify that the sphere between as a space-wise isothermal object and calculates the heat transfer cofficient

provide numerical values for the following quantities:

a) Biot number

b) Time constant

c) Heat transfer Cofficient

Reference no: EM13622802

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