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Question

Moist air at 35°C and 100% relative humidity is entering a psychometric device and leaving at 25°C and 100% relative humidity. The name of the device is

The correct answer is

Dehumidifier

Cooling saturated air reduces its saturation humidity ratio and condenses water. The process removes moisture, so it is dehumidification rather than purely sensible cooling.

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Important Questions from Properties of Moist Air (Psychrometric Properties)

  1. Spray humidifying is the process of adding moisture to the air by passing it through

    A. Chiller

    B. Air conditioning plant

    C. Washers
  2. Dew point temperature is the temperature at which condensation begins when the air is cooled at constant

  3. Which of the following increases during sensible heating of moist air

    1. Relative Humidity 

    2. Humidity Ratio

    3. Wet bulb temperature 

    4. Specific volume 

    Select the correct answer from codes given below: 

  4. Relative humidity is the ratio of:

  5. In a saturated air-water vapour mixture, the

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