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[Daily Question] Basic Process Knowledge (Multiple Choice) 20190114

2019-01-14View Original

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The wet bulb temperature can indicate the air’s . A. Moisture content B. Relative humidity C. Vapor pressure D. Enthalpy Value Hint: When measuring the wet-bulb temperature of air, the evaporation of water from the wet cloth saturates the air surrounding the wet bulb. The latent heat of vaporization of the generated steam comes from the surrounding air, which causes the wet-bulb temperature to be lower than that of dry air; in other words, the enthalpy value of the dry air around the wet bulb decreases, while the enthalpy value of water vapor increases. The total enthalpy value of the moist air remains unchanged.

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