View the step-by-step solution to:

# The composite wall of an oven consists of three materials, two of which are of known thermal conductivity, kA = 20 W/mK and kC = 50 W/mK, and known...

1. The composite wall of an oven consists of three materials, two of which are of known thermal conductivity, kA = 20 W/mK and kC = 50 W/mK, and known thickness, LA = 0.30 m and LC = 0.15 m.  The third material, B, which is sandwiched between materials A and C, is of known thickness, LB = 0.15m but the thermal conductivity kB is unknown.
Under steady-state operating conditions, measurements reveal an outer surface temperature of Ts,o = 20 °C, an inner surface temperature of Ts,i = 600 °C, and an oven air temperature of T∞= 800 °C.  The convection coefficient h inside the oven is known to be 25 W/m2K.  What is the value of kB?
See attached file for full problem description.

1. The composite wall of an oven consists of three materials, two of
which are of known thermal conductivity, kA = 20 W/mÂ·K and kC = 50
W/mÂ·K, and known thickness, LA = 0.30 m and LC = 0.15 m. The third
material, B, which is sandwiched between materials A and C, is of known
thickness, LB = 0.15m but the thermal conductivity kB is unknown.
Under steady-state operating conditions, measurements reveal an outer
surface temperature of Ts,o = 20 Â°C, an inner surface temperature of
Ts,i = 600 Â°C, and an oven air temperature of Tâ= 800 Â°C. The
convection coefficient h inside the oven is known to be 25 W/m2Â·K.
What is the value of kB?

### Why Join Course Hero?

Course Hero has all the homework and study help you need to succeed! We’ve got course-specific notes, study guides, and practice tests along with expert tutors.

### -

Educational Resources
• ### -

Study Documents

Find the best study resources around, tagged to your specific courses. Share your own to gain free Course Hero access.

Browse Documents