Steam: heat transfer properties

Heat transfer properties of steam

Below you will find the diagram showing the relationship between enthalpy and temperature (from -15°C to 200°C) at constant pressure (2 bar absolute and 1 bar relative) for the different states of water (solid, liquid, gas). This diagram will also clearly highlight the difference between wet saturated steam, dry saturated steam and superheated steam.


Diagram of the heat transfer properties of steam.

*Definition of the DRYNESS FRACTION of saturated steam: in the biphasic gas mixture, this is the ratio of the mass of the vaporised fraction to the total mass of the steam and water mixture.

 

Several phases are observable for the states of water: a heating phase, a melting phase, a sensible heat phase, a latent heat phase and a final superheated phase, depending on the heat input. It should be noted that each phase described above corresponds to a more or less defined state of water. Specific points are also to be identified: the melting ice point, the start of liquid water point and, most importantly, the boiling point.

STERIGENE offers complete pure fluid production systems, including steam generation. Its particular distinction is that it complies with the applicable standards of the pharmaceutical industries. We can work with you, based on your needs and constraints, on the full design and installation of a water loop with integrated storage and steam generation.

If you would like more information on pure fluids, do not hesitate to refer to our many training courses covering this subject by clicking here: TRAINING