When the dry-bulb and wet-bulb temperatures are the same, the relative humidity of the air is _____% 100% For the summer months, the average individual will be comfortable if the surrounding air is _____ with a relative humidity of _____.
transform dry-bulb and wet-bulb temperatures into relative humidity. A method is proposed to obtain humidity by combining searching table and linear smoothing algorithm, which is suitable for rapid control.
To determine relative humidity: 1 Subtract the wet-bulb temperature from the dry-bulb 3 Find the dry-bulb temperature in the ﬁ rst column on the left. Place your ﬁ nger on it. 4 Bring your ﬁ ngers down the column and across the row. The relative humidity Relative Humidity Table …
The Dry Bulb, Wet Bulb and Dew Point temperatures are important to determine the state of humid air. The knowledge of only two of these values is enough to determine the state of the moist air – including the content of water vapor and the sensible and latent energy (enthalpy) in the air.
Wet Bulb temperature can be measured by using a thermometer with the bulb wrapped in wet muslin. The adiabatic evaporation of water from the thermometer bulb and the cooling effect is indicated by a "wet bulb temperature" lower than the "dry bulb temperature" in the air.
Return to the Atmospheric Moisture Lecture Notes Return to the Atmospheric Moisture Exercise Return to the Moisture-Lapse Rate Review Exercise Return to the Moisture Review Notes
Derived From Web-Bulb and Dry-Bulb Temperatures (°C) This table gives the approximate relative humidity directly from the reading of the air temperature (dry bulb) and the wet bulb. It is computed for a pressure of 74.27 cm Hg.
The wet-bulb depression is the difference between the dry-bulb temperature and the wet-bulb temperature. If there is 100% humidity, dry-bulb and wet-bulb temperatures are identical, making the wet-bulb depression equal to zero in such conditions.
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