Question

A wall is made out of three layers of different materials as shown in figure, l1=3cm, l2=5cm l3=4cm. The crosssectional area of the wall is 40m2. The heat conductivities of the three materials are k1= 0.13 J/sm 0C, k2=0.08 J/sm 0C and k3= 0.04 J/sm 0C. Determine the rate of heat transfer through the wall if the temperature inside is 25oC and the temperature outside is -10oC

Name: a wall is made out of three layers of different materials as shown in figure l13cm l25cm l34cm the crosssectional area of the wall is 40m2 the heat conductivities of the three materials are k1 013 jsm
Uploaded: 2022-12-10T07:26:31-08:00
Duration: 4 min 11 s
Channel: Supratim Pal
Description: a wall is made out of three layers of different materials as shown in figure l13cm l25cm l34cm the crosssectional area of the wall is 40m2 the heat conductivities of the three materials are k1 013 jsm

          A wall is made out of three layers of different materials as shown in figure, l1=3cm, l2=5cm l3=4cm. The crosssectional
area of the wall is 40m2. The heat conductivities of the three
materials are k1= 0.13 J/sm 0C, k2=0.08 J/sm 0C and k3= 0.04 J/sm 0C. Determine the rate of heat transfer through the wall if the temperature inside is 25oC and the temperature
outside is -10oC

Added by Andrea C.

University Physics with Modern Physics

Hugh D. Young 14th Edition

Instant Answer

Solved by Expert Supratim Pal

12/10/2022

Step 1

03 \, m \) \( L_2 = 5 \, cm = 0.05 \, m \) \( L_3 = 4 \, cm = 0.04 \, m \) \( k_1 = 0.13 \, J/sm°C \) \( k_2 = 0.08 \, J/sm°C \) \( k_3 = 0.04 \, J/sm°C \) Plugging in the values: \[ R = \frac{0.03}{0.13} + \frac{0.05}{0.08} + \frac{0.04}{0.04} \] \[ R = Show more…

Show all steps

Thanks for your feedback!

A wall is made out of three layers of different materials as shown in figure, l1=3cm, l2=5cm l3=4cm. The crosssectional area of the wall is 40m2. The heat conductivities of the three materials are k1= 0.13 J/sm 0C, k2=0.08 J/sm 0C and k3= 0.04 J/sm 0C. Determine the rate of heat transfer through the wall if the temperature inside is 25oC and the temperature outside is -10oC