Calculate the air density, when 10m/s wind is at 1std atmospheric pressure and 15^oC?(a) 1.226 kg/m^3(b) 1.033 kg/m^3(c) 2.108 kg/m^3(d) 0.922 kg/m^3The question was asked in a national level competition.The above asked question is from Velocity and Power from Wind in division Wind Energy of Energy Engineering

Calculate the air density, when 10m/s wind is at 1std atmospheric pres

1.	Calculate the air density, when 10m/s wind is at 1std atmospheric pressure and 15^oC?(a) 1.226 kg/m^3(b) 1.033 kg/m^3(c) 2.108 kg/m^3(d) 0.922 kg/m^3The question was asked in a national level competition.The above asked question is from Velocity and Power from Wind in division Wind Energy of Energy Engineering
Answer» CORRECT ANSWER is (a) 1.226 kg/m^3 The BEST explanation: For air, GAS constant R = 287 J/kgK, 1ATM = 1.01325 X 10^5 Pa Air density, ρ = P/RT = (1.01325 ×10^5)/(287(15+273.15)) = 1.226 kg/m^3.

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