Chapter 15 Steady Heat Conduction3-112E The handle of a silver spoon partially immersed in boiling water extends 7 in. in the air from the free surface of the water. The temperature difference across the exposed surface of the spoon handle is to be determined. Assumptions1The temperature of the submerged portion of the spoon is equal to the water temperature. 2The temperature in the spoon varies in the axial direction only (along the spoon), T(x). 3The heat transfer from the tip of the spoon is negligible. 4 The heat transfer coefficient is constant and uniform over the entire spoon surface. 5The thermal properties of the spoon are constant. 6 The heat transfer coefficient accounts for the effect of radiation from the spoon.. PropertiesThe thermal conductivity of the spoon is given to be k= 247 Btu/h⋅ft⋅°F.AnalysisNoting that the cross-sectional area of the spoon is constant and measuring
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