D4 4. (a) If w is humidity ration, o is relative humidity, Pw is partial pressure ofwater vapor in the air, Tis air temperature, and Pis the total pressure ofthe air, derive that w = 0.62198PW/(P- Pw).(b) If P=101.3kPa, o = 50%, w = 0.014 kg/kg dry air, find Pw, T, and Psat.(c) If P=101.3kPa, w = 0.008 kg/kg dry air, T= 25 °C, find p.(d) In problem (c), if Tincreases from 25 to 35 °C, find p.!3!

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4. (a) If w is humidity ration, o is relative humidity, Pw is partial pressure of water vapor in the air, Tis air temperature, and Pis the total pressure of 0.62198PW/(P- Pw). (b) If P=101.3kPa, o = 50%, w = 0.014 kg/kg dry air, find Pw, T, and Psat. (c) If P=101.3kPa, w = 0.008 kg/kg dry air, T= 25 °C, find p. (d) In problem (c), if Tincreases from 25 to 35 °C, find p. the air, derive that w = %3D

4. (a) If w is humidity ration, o is relative humidity, Pw is partial pressure of water vapor in the air, Tis air temperature, and Pis the total pressure of 0.62198PW/(P- Pw). (b) If P=101.3kPa, o = 50%, w = 0.014 kg/kg dry air, find Pw, T, and Psat. (c) If P=101.3kPa, w = 0.008 kg/kg dry air, T= 25 °C, find p. (d) In problem (c), if Tincreases from 25 to 35 °C, find p. the air, derive that w = %3D

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter40: Typical Operating Conditions

Section: Chapter Questions

Problem 1RQ: The standard design conditions for air-conditioning systems established by the Air-Conditioning,...

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