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T T T3- Indoors ke Outdoors -L, Lム→--L- The energy transfer per second is the same in each layer. (a) (b) (c) (d)

T T T3- Indoors ke Outdoors -L, Lム→--L- The energy transfer per second is the same in each layer. (a) (b) (c) (d)

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The figure shows the cross section of wall made of wood of thickness La and brick of thickness Ld (=0.2 La). Two more layers are sandwiched between wood and brick with identical thickness and thermal conductivities. The thermal conductivity of the wood is ka and that of brick is kd (=5.0 ka). The face area A of the wall is unknown. Energy transfer through the wall is steady. The only known temperatures are T1 = 55oC, T2 = 30oC and T5 = -10oC. Apply the concept of steady-state heat transfer through conduction on the wall, and determine the interface temperature T4?

T, T3- Tr -T3 Indoors ke Outdoors -L,--Lム-ーー The energy transfer per second is the same in each layer. (a) (b) (c) (d)
Transcribed Image Text:T, T3- Tr -T3 Indoors ke Outdoors -L,--Lム-ーー The energy transfer per second is the same in each layer. (a) (b) (c) (d)
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