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Engineering and Tech / Thermodynamics: An Engineering Approach 8 / Chapter 14 / Problem 1432

Thermodynamics: An Engineering Approach | 8th Edition | ISBN: 9780073398174 | Authors: Yunus A. Cengel

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Atmospheric air at 358C flows steadily into an adiabatic

Chapter 14, Problem 1432

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QUESTION:

Atmospheric air at 358C flows steadily into an adiabatic saturation device and leaves as a saturated mixture at 258C. Makeup water is supplied to the device at 258C. Atmospheric pressure is 98 kPa. Determine the relative humidity and specific humidity of the air

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QUESTION:

Atmospheric air at 358C flows steadily into an adiabatic saturation device and leaves as a saturated mixture at 258C. Makeup water is supplied to the device at 258C. Atmospheric pressure is 98 kPa. Determine the relative humidity and specific humidity of the air

ANSWER:

Step 1 of 3

Atmospheric air flows steadily into an adiabatic saturation device and leaves as a saturated vapor. The relative humidity and specific humidity of air are to be determined.

Assumptions are

1. This is a steady-flow process and thus the mass flow rate of dry air remains constant during the entire process ) .

2. Dry air and water vapor are ideal gases.

3. The kinetic and potential energy changes are negligible.

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