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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: Humidity.Saturation humidity and percentage humidity.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: Percentage humidity HP.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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