Estimate the local heat transfer

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Liquid ammonia is heated as it flows at a mean velocity of 2 m s-1 through a circular pipe. The pipe, which has an internal diameter of 75 mm, is at a uniform temperature of 27°C, and the ammonia at a section 1.2 m from the inlet to the pipe has a temperature of -23°C. Use the following information to estimate the local heat transfer flux at l = 1.2 m. Note, the properties of ammonia liquid have been taken at -23°C, except where stated.Liquid ammonia properties:Density = 600 kg m-3 Specific heat capacity = 4.86 kJ kg-1 K-1 Dynamic viscosity (at 27°C) = 1.19 × 10-4 kg m-1 s-1 Dynamic viscosity = 2.05 × 10-4 kg m-1 s-1 Thermal conductivity = 5.11 × 10-4 kW m-1 s-

Reference no: EM13870336

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