Wet-bulb Temperature (wbt)
It is the temperature of wet air around you when it
is measured with a thermometer covered with a water-soaked cloth at its bulb.
When the air passes over the wet cloth covered on the bulb of the thermometer,
water starts evaporating until it reaches the saturation value and the thermometer reads the lowest temperature which can be reached at current
ambient condition by the evaporation of water.
Dry Bulb Temperature (dbt)
It is the ambient temperature, measured with a
thermometer freely exposed to the air. Sensible heating/ cooling can change the
dry bulb temperature of the air.
Dew point temperature
As the name implies, it is the temperature at which
the formation of water dews will start. When we cool the air, it will get
saturated with water vapor at a particular temperature and this temperature is
known as the dew point temperature.
Humidity
It can be described as
the amount of water vapor present in the air and it indicates the chance of
dew/fog formation in the air. The ratio of the mass of water vapor to the mass of
moist air is known as the specific humidity and the relative humidity will
express the present percentage of absolute humidity to the maximum humidity at
the same temperature.
No comments:
Post a Comment