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  2. Dew point - Wikipedia

    en.wikipedia.org/wiki/Dew_point

    In technical terms, the dew point is the temperature at which the water vapor in a sample of air at constant barometric pressure condenses into liquid water at the same rate at which it evaporates. [7] At temperatures below the dew point, the rate of condensation will be greater than that of evaporation, forming more liquid water.

  3. Condensation - Wikipedia

    en.wikipedia.org/wiki/Condensation

    Condensation is the change of the state of matter from the gas phase into the liquid phase, and is the reverse of vaporization. The word most often refers to the water cycle . [ 1 ] It can also be defined as the change in the state of water vapor to liquid water when in contact with a liquid or solid surface or cloud condensation nuclei within ...

  4. Water vapor - Wikipedia

    en.wikipedia.org/wiki/Water_vapor

    Condensation in the atmosphere forms cloud droplets. Also, a net condensation of water vapor occurs on surfaces when the temperature of the surface is at or below the dew point temperature of the atmosphere. Deposition is a phase transition separate from condensation which leads to the direct formation of ice from water vapor.

  5. Lifting condensation level - Wikipedia

    en.wikipedia.org/wiki/Lifting_condensation_level

    Schematic of the LCL in relation to the temperature (T) and dew point and their altitude (Z); the moist adiabatic temperature curve above the LCL is also sketched for reference The lifting condensation level or lifted condensation level ( LCL ) is the height at which the relative humidity (RH) of an air parcel will reach 100% with respect to ...

  6. Vapor pressure - Wikipedia

    en.wikipedia.org/wiki/Vapor_pressure

    This is illustrated in the vapor pressure chart (see right) that shows graphs of the vapor pressures versus temperatures for a variety of liquids. [7] At the normal boiling point of a liquid, the vapor pressure is equal to the standard atmospheric pressure defined as 1 atmosphere, [ 1 ] 760 Torr, 101.325 kPa, or 14.69595 psi.

  7. Vapor-compression evaporation - Wikipedia

    en.wikipedia.org/wiki/Vapor-compression_evaporation

    The compression ratio in a MVR unit does not usually exceed 1.8. At a compression ratio of 1.8, if the evaporation is performed at atmospheric pressure (0.101 MPa), the condensation pressure after compression will be 0.101 x 1.8 = 0.1818 [MPa]. At this pressure, the condensation temperature of the water vapor at the heat exchanger will be 390 K.

  8. Convective condensation level - Wikipedia

    en.wikipedia.org/wiki/Convective_condensation_level

    In the early morning, this temperature is typically larger than the surface temperature, in the mid-afternoon, it may be the same. Compare this to the Lifting Condensation Level (LCL) where the air is lifted and cooled without first increasing the surface temperature. The LCL is less than or equal to the CCL depending on the temperature profile.

  9. Hydrocarbon dew point - Wikipedia

    en.wikipedia.org/wiki/Hydrocarbon_dew_point

    The chilled mirror technique is a first principle measurement. Depending on the specific method used to establish the dew point temperature, some correction calculations may be necessary. As condensation must necessarily have already occurred for it to be detected, the reported temperature is lower than when using theoretical methods. [5]