1. A mild steel tank of wall thickness 10 mm contains water at 90 °C. The thermal conductivity of mild steel is 50 W/m °C, and the heat transfer coefficient for inside and outside of the tank area are 2800 and 11 W/m2 °C, respectively. If the atmospheric temperature is 20 °C, calculate: The rate of heat loss per m2 of the tank surface area. (ii) The temperature at the outside surface of tank. (i) (ii)

Q: 30°C

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