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  3. 1a. the relative humdity outdoor is 70% and the ou

1a. The relative humdity outdoor is 70% and the outdoor temperature is 90 degree F what...

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Mechanical Engineering

1a. The relative humdity outdoor is 70% and the outdoortemperature is 90 degree F what is the actual partial pressure ofwater vapor in the air

1b. Humidty ratio (w) is the ratio of the mass of the water (Mw)to the mass of dry air (Mw) note that two partial pressures sum tothe total pressure (P =Pa + Pv) derive the equation

w = 0.622Pv / (P-Pv). Use the ideal gas equation for mass

1c. Solve for humidity ratio if the partial pressure of watervapor is 0.1816psia

1d. What is the relative humidity of 70 degree F moist air in aclassroom

1e. Estimate the mass (Ibm) of water vapor in the classroom

Answer & Explanation Solved by verified expert
3.9 Ratings (552 Votes)
1a Relative humidity phi Pv Pvsat From psychrometric tables At 90 deg F we get Pvsat 06988 psi Therefore partial    See Answer
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