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"A 25 cm thick wall of common brick is initially at 80°C, and suddenly its surfaces are reduced to 15°C. Find the temper
Posted: Sat Feb 26, 2022 11:43 am
by answerhappygod
- A 25 Cm Thick Wall Of Common Brick Is Initially At 80 C And Suddenly Its Surfaces Are Reduced To 15 C Find The Temper 1 (43.86 KiB) Viewed 36 times
"A 25 cm thick wall of common brick is initially at 80°C, and suddenly its surfaces are reduced to 15°C. Find the temperature at a point 10 cm from the surface and at the mid-plane after 2 h. How much heat has been conducted out of the wall per unit surface area during that time? Given: p = 1.6 103 kg/m?, c = 0.84 kJ/kg K, a = 5.2 x 10-7 m²/s k = 0.7 W/m K.