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Value of Prandtl number for water ranges from_________________?

August 24, 2021March 3, 2019 by admin

Value of Prandtl number for water ranges from_________________?

A. 1 to 2
B. 5 to 10
C. 100 to 500
D. 1000 to 2000

Categories Chemical Heat Transfer

For a fluid flowing in an annulus space, the wetted perimeter for heat transfer and pressure drop are__________________?

A long iron rod initially at a temperature of 20°C has one end dipped in boiling water (100°C) at time, t = 0. The curved surface of the rod is insulated so that heat conduction is one dimensional in the axial direction. The temperature at a distance 100 mm from the dipped end becomes 40°C at time, t = 200 s. The same temperature is achieved at a distance of 200 mm from the dipped end at time ___________________?

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