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A composite wall consisting of five series layers of materials with different properties. Layer thickness, thermal conductivity of the layers and temperatures are shown on the figure. Based on Fourier's law for conduction, answer the following questions. 1. What are the main assumptions? 2. Drive an equation to calculate the heat transfer rate through the Composite wall? 3. Draw the thermal circuit through composite wall? 4. What are the value Ti? 5. What are the value Tj? 6. What are the value Tr? Givens: KA = 2 W/m. °C KB= 1 W/m.C Kc = 5 W/m. °C Kp= 4 W/m. °C 100°C Ti 25°C Tj Tr А B C D +2cm + 6 cm 4 cm cm

A composite wall consisting of five series layers of materials with different properties. Layer thickness, thermal conductivity of the layers and temperatures are shown on the figure. Based on Fourier's law for conduction, answer the following questions. 1. What are the main assumptions? 2. Drive an equation to calculate the heat transfer rate through the Composite wall? 3. Draw the thermal circuit through composite wall? 4. What are the value Ti? 5. What are the value Tj? 6. What are the value Tr? Givens: KA = 2 W/m. °C KB= 1 W/m.C Kc = 5 W/m. °C Kp= 4 W/m. °C 100°C Ti 25°C Tj Tr А B C D +2cm + 6 cm 4 cm cm

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A composite wall consisting of five series layers of materials with different properties. Layer thickness, thermal conductivity of the layers and temperatures are shown on the figure. Based on Fourier's law for conduction, answer the following questions. 1. What are the main assumptions? 2. Drive an equation to calculate the heat transfer rate through the Composite wall? 3. Draw the thermal circuit through composite wall? 4. What are the value Ti? 5. What are the value Tj? 6. What are the value Tr? Givens: KA = 2 W/m. °C KB = 1 W/m.°C Kc = 5 W/m. °C Kp= 4 W/m. °C 100°C Ti 25°C Tj Tr B C D +2cm + -6 cm 4 cm- 4cm
Transcribed Image Text:A composite wall consisting of five series layers of materials with different properties. Layer thickness, thermal conductivity of the layers and temperatures are shown on the figure. Based on Fourier's law for conduction, answer the following questions. 1. What are the main assumptions? 2. Drive an equation to calculate the heat transfer rate through the Composite wall? 3. Draw the thermal circuit through composite wall? 4. What are the value Ti? 5. What are the value Tj? 6. What are the value Tr? Givens: KA = 2 W/m. °C KB = 1 W/m.°C Kc = 5 W/m. °C Kp= 4 W/m. °C 100°C Ti 25°C Tj Tr B C D +2cm + -6 cm 4 cm- 4cm
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