Figure above shows the cross section of a wall made of two layers. The thickness of the 2 nd layer is L2= 0.70L1. The thermal conductivities of the layers are 0.25 and 0.75 W/mK, respectively and thermal conduction is steady. If the temperatures at inlet and between the layers are Ti = 30.0°C and T=8 °C. respectively: what is the outside temperature To for unit area?

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- Figure above shows the cross section of a wall made of two layers. The thickness of the 2 nd layer is
L2= 0.70L1. The thermal conductivities of the layers are 0.25 and 0.75 W/mK, respectively and
thermal conduction is steady. If the temperatures at inlet and between the layers are Ti = 30.0°C and
T=8 °C, respectively; what is the outside temperature To for unit area?
Transcribed Image Text:- Figure above shows the cross section of a wall made of two layers. The thickness of the 2 nd layer is L2= 0.70L1. The thermal conductivities of the layers are 0.25 and 0.75 W/mK, respectively and thermal conduction is steady. If the temperatures at inlet and between the layers are Ti = 30.0°C and T=8 °C, respectively; what is the outside temperature To for unit area?
ki
T,
Transcribed Image Text:ki T,
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