The cylinder is made from aluminum with diameter and thickness of 5 cm and 1 cm respectively. The wall temperature in the insic of cylinder is 50°C, while the temperature of the air is 30°C. the coefficient of convection in the air is 10 W/m2 C. Calculate the heat loss from the cylinder per unit length! • Calculate the thickness of the insulation so heat loss from cylinder will decrease 50% of initial condition. Thermal conductivity of the isolator (k) : 0.5 W/m°C

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