Estimate the rate of heat loss per unit length from a 2 in. ID, 23/8 in. OD steel pipe covered with high temperature insulation having a thermal conductivity of 0.065 Btu/(h ft) and a thickness of 0.5 in. Steam flows in the pipe. It has a quality of 99% and is at 300?F. The unit thermal resistance at the inner wall is 0.015 (h ft2 ?F)/Btu, the heat transfer coefficient at the outer surface is 3.0 Btu/(h ft2 ?F), and the ambient temperature is 60?F.GIVENInsulated, steam filled steel pipeDiametersID of pipe (Di) = 2 in.OD of pipe (Do) = 2.375 in.Thickness of insulation (Li) = 0.5 in.Steam quality = 99%Steam temperature (Ts) = 330?FUnit thermal resistance at inner wall (A Ri) = 0.015 (h ft2 ?F)/BtuHeat transfer coefficient at outer wall (ho) = 3.0 Btu /(h ft2 ?F)Ambient temperature (T??) = 60?FThermal conductivity of the insulation (kI) = 0.065 Btu /(h ft ?F)ASSUMPTIONS1% carbon steelConstant thermal conductivitiesSteady stateconditions

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D; = 2h -D.-2.375 In Steam T = 300°F z D, =D,+2 L, = 3,375 In T= 60°F