As shown in the figure, a hot fluid flowing in 1 m long tube. The temperature of the inner surface of the tube is kept constant at T. The heat transfer loss due to radiation is equal to 5% of the heat loss due to convection process from the tube. If you know the following, answer the following questions? Too = 25 C h = 100 W/m2.K k = 1 W/m.K T = 200 C Tsurr = 25 C n = 25 mm To = 75 mm O = 5.67x10-8 W/m².K* What is the value of the 316 temperature To (K)? What is the emissivity of 0.67 the tube outer surface?

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