Air at 20 C flows over a 0.003 m diameter platinum wire in an anemometer. The...

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Air at 20 °C flows over a 0.003 m diameter platinum wire in an anemometer. The readings indicate that the surface temperature of the hot wire is 80 °C and the heat flux from the wire is 5000 W/m². Calculate the velocity of the air. Properties of air are provided below; Cp (kg/m³) (J/kg-K) 1005 1.177 k (W/m.K) 0.0261 α (m²/s) 2.21 x 10-5 η (kg/m-s) 1.85 × 10-5 (m²/s) 1.57 x 10-5 8B/v² (m-³.K-¹) 13300 × 104 Air at 20 °C flows over a 0.003 m diameter platinum wire in an anemometer. The readings indicate that the surface temperature of the hot wire is 80 °C and the heat flux from the wire is 5000 W/m². Calculate the velocity of the air. Properties of air are provided below; Cp (kg/m³) (J/kg-K) 1005 1.177 k (W/m.K) 0.0261 α (m²/s) 2.21 x 10-5 η (kg/m-s) 1.85 × 10-5 (m²/s) 1.57 x 10-5 8B/v² (m-³.K-¹) 13300 × 104

Answer rating: 100% (QA)

Air density at 20C 1177 kgm3 Specific heat capacity of air Cp 1005 JkgK Thermal conductivity of air ... View the full answer