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IPEC Pipeline Toolbox | Dew Point Temperature
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2013 Ver.



Dew Point Temperature

The main result from this module is the dew point temperature. However partial pressure of water and air, saturated water vapor pressure, etc. is calculated. Calculation of dew point temperature is required in many industrial applications such as pre-commissioning of pipelines. To avoid hydrate formation when the pipe is put into service and to attain the minimum H2O level, the pipeline is dried and brought to its dew point about -40°C before injection of commercial gas.

i.e: 28 °C or 300 K

i.e: 100000 Pa or 1 bar


  1. Claus Borgnakke, Richard E. Sonntag , 2009, fundamentals of thermodynamics, John Wiley & Sons, USA
  2. http://www.engineeringtoolbox.com
  3. http://www.cactus2000.de/uk/unit/masshum.shtml (in English)
  4. "The computation of equivalent potential temperature", Monthly Weather Review, vol.108, pg.1047, Eq.10