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Unstable chemicals have been stored in a blast - proof storage unit with concrete walls in an area distant from a chemical plant where the

Unstable chemicals have been stored in a blast-proof storage unit with concrete walls in an area distant from a chemical plant where the chemicals are used. On a hot day, the air temperature has reached 40\deg C and the wind is blowing such that the heat transfer coefficient on the exterior wall surfaces area is 50 W/m2-K.The 10 cm thick walls had been at 25\deg C, but something has caused the chemicals inside to ignite. Monitoring instruments indicate that the interior room temperature quickly reached and stabilized at 205\deg C. The walls of the storage unit have a thermal conductivity of 0.58 W/m-K, density 1910 kg/m3, and specific heat capacity of 920 J/kg-K.Find the temperature profile through a wall, assuming that at time t =0, the temperature of the left face (interior) is raised to 200 oC while the right face (exterior) is exposed to blowing air at 40 oC.Estimate the time required to approach steady state using the explicit method with the following conditions:a)11 nodes in this system with a time step of 65 s.b)21 nodes in this system with a time step of 21 s.c) How do the answers change with =21? Should a time step even smaller be used to get an accurate answer or was 65 s adequate? Use excel

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