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​A ribbed cylinder of outside diameter 0.6m is at a surface temperature of 260℃ in large surroundings at 20℃


A ribbed cylinder of outside diameter 0.6m is at a surface temperature of 260℃ in large surroundings at 20℃. Calculate the heat transfer coefficient for radiation, and the total heat loss rate due to radiation and convection. The cylinder is 0.9m long and is made of cast iron of emissivity 0.8. The surface area of the ribbed cylinder is 5 m2. and the heat transfer coefficient for convection may be taken as 8.8 W/m2K. Neglect end effects.

engineering   Mechanical-Engineering   
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