Question

In: Mechanical Engineering

A tank contains 21 kg of dry air and 0.3 kg of water vapor at 30°C...

A tank contains 21 kg of dry air and 0.3 kg of water vapor at 30°C and 100 kPa total pressure. Determine

(a) The specific humidity

(b) The relative humidity

(c) The specific enthalpy of the mixture in the tank as (kJ/kg-mixture) (calculate by hand)

(d) The specific enthalpy of the mixture in the tank as (kJ/kg-dry air) (calculate by hand)

(e) Explain (in 1-2 sentences) the difference between the values in c and d – which value agrees with the enthalpy value in the psychrometric chart at this condition?

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