Chapter 10 Boiling and Condensation10-69 A 40-cm long cylindrical heat pipe dissipates heat at a rate of 150 W. The diameter and mass of a 40-cm long copper rod that can conduct heat at the same rate are to be determined. AssumptionsSteady operating conditions exist.PropertiesThe properties of copper at room temperature are ρ= 8950 kg/m3and k= 386 W/m.°C.AnalysisThe rate of heat transfer through the copper rod can be expressed as
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