Discuss the below:
Forced Convection Temperatures
Q: The temperature of a gas stream is measured by a thermocouple whose junction can be approximated as a 1.2mm diameter sphere.
The properties of the junction are:
K = 40.5 W/m*k p= 7950 kg/m^3 Cp= 345 J/kg*k
The heat transfer coefficient between the junction and the air where h= 250 W/m^2 * K
Determine how long it will take the thermocouple to read 50% and 99% of the initial temperature.
Sphere: diameter = 1.2mm
