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Transport Processes and Separation Process Principles (Includes Unit Operations) Fourth Edition by Christie John Geankoplis

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PROBLEMS

9.3-1.

Humidity from Vapor Pressure. The air in a room is at 37.8°C and a total pressure of 101.3 kPa abs containing water vapor with a partial pressure pA = 3.59 kPa. Calculate:

  1. Humidity.

  2. Saturation humidity and percentage humidity.

  3. Percentage relative humidity.

9.3-2.

Percentage and Relative Humidity. The air in a room has a humidity H of 0.021 kg H2O/kg dry air at 32.2°C and 101.3 kPa abs pressure. Calculate:

  1. Percentage humidity HP.

  2. Percentage relative humidity HR.

A2: Ans. (a) HP = 67.5%; (b) HR = 68.6%
9.3-3.

Use of the Humidity Chart. The air entering a dryer has a temperature of 65.6°C (150°F) and dew point of 15.6°C (60°F). Using the humidity chart, determine the actual humidity and percentage humidity. Calculate the humid volume ...

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