psychrometrics
Sign in to savePsychrometrics (or psychrometry, ; also called hygrometry) is the field of engineering concerned with the physical and thermodynamic properties of gas-vapor mixtures.
Article
23 sectionsContents
- History
- Common applications
- Psychrometric properties
- Dry-bulb temperature (DBT)
- Wet-bulb temperature (WBT)
- Dew point temperature
- Humidity
- Specific humidity
- Absolute humidity
- Relative humidity
- Specific enthalpy
- Specific volume
- Psychrometric ratio
- Humid heat
- Pressure
- Psychrometric charts
- Terminology
- Locating parameters on chart
- How to read the chart: fundamental examples
- Mollier diagram
- See also
- References
- External links
Psychrometrics (or psychrometry, ; also called hygrometry) is the field of engineering concerned with the physical and thermodynamic properties of gas-vapor mixtures.
== History == With the inventions of the hygrometer and thermometer, the theories of combining the two began to emerge during the sixteenth and seventeenth centuries. In 1818, a German inventor, Ernst Ferdinand August (1795-1870), patented the term “psychrometer”, from the Greek language meaning “cold measure”. The psychrometer is a hygrometric instrument based on the principle that dry air enhances evaporation, unlike wet air, which slows it.