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Transient-(Unsteady-State-Heat-Conduction)

A mercury rmometer with bulb idealized as a sphere of 1 mm radius is used for measuring temperature of fluid whose temperature is varying at a fast rate. For mercury

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k = 10 W/m K

α = 0.00005 m2/s

h = 10 W/m2 K

If time for temperature change of fluid is 3 second, what should be radius of rmocouple to read temperature of fluid?
For rmocouple material
k = 100 W/m K
α = 0.0012 m2/s
h = 18 W/m2 K


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This Chapter Transient-(Unsteady-State-Heat-Conduction) consists of the following topics

An iron billet (k = 65 W/m K) measuring 20 * 15 * 80 cm is exposed to a convective flow resulting in convection coefficient of 11.5 W/m2 K. Determine the Biot number

A mercury rmometer with bulb idealized as a sphere of 1 mm radius is used for measuring temperature of fluid whose temperature is varying at a fast rate. For mercury

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k = 10 W/m K

α = 0.00005 m2/s

h = 10 W/m2 K

If time for temperature change of fluid is 3 second, what should be radius of rmocouple to read temperature of fluid?
For rmocouple material
k = 100 W/m K
α = 0.0012 m2/s
h = 18 W/m2 K

The sensitivity of thermocouple is defined as the time required by thermocouple to reach how much percentage of its steady state values?

what should be the radius of thermocouple to read the temperature of the fluid? For the thermocouple material k = 100 W/m K α = 0.0012 m2/s h = 18 W/m2 K

Transient (Unsteady State Heat Conduction)

Heat-Transfer