Please help solve the following heat transfer problem. You are to use a resistance model in your solution. Thank you. Consider a thick cylindrical wall with insulation at both the innerand outer walls. The inner and outer radii of the thick cylinder are12 = 40 cm and 13 = 80 cm, respectively. The length of cylinderis 1 meter. The thermal conductivity of the wall is k₂ = 120-The thickness of outer insulation is 5 cm and its thermalconductivity is k3 = 12 . The thickness of the inner insulationWmkWmkWThe heatmk=is also 5 cm, but the thermal conductivity is k₁ = 8dissipates through the surface of outer sides of the insulationthrough convention with h, 50- and the ambienttemperature outside the pipe is Tsurface is maintained at 80°C. Compute the heat transfer through the wall and the temperature ofthe outer most surface.Wm²K= 25°C. The inner mostUse resistance models to solve this problem.wallk2 = 120 W/mKr3= 80 cmr2 = 40 cmr1 = 35 cminner insulationk1 = 8 W/mKr4 = 85 cmouter insulationk3 = 12 W/mK

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12 = 40 cm and 13 = 80 cm, respectively. The leng is 1 meter. The thermal conductivity of the wall is k₂ The thickness of outer insulation is 5 cm and its therm W conductivity is k3 = 12 The thickness of the inn mk is also 5 cm, but the thermal conductivity is k₁ = 8 - dissipates through the surface of outer sides of the in W through convention with h, 50- and the ambil m²K temperature outside the pipe is T25°C. The inn surface is maintained at 80°C. Compute the heat tran

12 = 40 cm and 13 = 80 cm, respectively. The leng is 1 meter. The thermal conductivity of the wall is k₂ The thickness of outer insulation is 5 cm and its therm W conductivity is k3 = 12 The thickness of the inn mk is also 5 cm, but the thermal conductivity is k₁ = 8 - dissipates through the surface of outer sides of the in W through convention with h, 50- and the ambil m²K temperature outside the pipe is T25°C. The inn surface is maintained at 80°C. Compute the heat tran

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter1: Basic Modes Of Heat Transfer

Section: Chapter Questions

Problem 1.37P: 1.37 Mild steel nails were driven through a solid wood wall consisting of two layers, each 2.5-cm...

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1.37 Mild steel nails were driven through a solid wood wall consisting of two layers, each 2.5-cm thick, for reinforcement. If the total cross-sectional area of the nails is 0.5% of the wall area, determine the unit thermal conductance of the composite wall and the percent of the total heat flow that passes through the nails when the temperature difference across the wall is 25°C. Neglect contact resistance between the wood layers.
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