A 4 m diameter sphere is embedded in insulation. The sphere contains a liquid-ice mixture maintained at 0 deg C. The ambient temperature surrounding the insulation is 25 deg C. The heat loss is 400 W. What is the temperature conductivity of the insulation?
a) Less than 0.5 W/m-deg C
b) 0.5 to 1.0 W/m-deg C
c) Greater than 2 W/m-deg C
d) none of the above© BrainMass Inc. brainmass.com October 24, 2018, 11:07 pm ad1c9bdddf
As per the data provided by you, the answer is a).
Please see the attached files.
Theoretical Back Ground
Thermal/temperature conductivity K, is the property of a material that indicates its ability to conduct heat
Q=KA (ΔT/x) 1
Where Q is the rate of heat flow (heat flow per unit time), A ...
The solution determines the temperature conductivity of the insulation.
Thermal Conductivity: Ratio of Conductivities of Two Materials
Please see the attached file for the entire problem.
Problem. The ratio of thermal Conductivity of material 1 to the thermal
Conductivity of material 2 is
(a)Less than 1 (b) greater than 1 (c) equal to 1 (d) infinity
And why? Give reason
There is a plot given in problem file in which both material shown.