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Introduction

Steam Table is very important to steam users in industries & will help you to find various properties of steam at any given particular.

What are steam Tables?

Steam tables are defined as the thermodynamic data that contain the properties of water or steam. These data are commonly used by engineers. It is normally used to obtain the following properties using steam pressure for saturated steam temperature and saturated temperature for saturated steam pressure.  It is also widely used for a particular enthalpy and volume.
Property tables list the properties from saturated water to steam. This is because water is the medium that can be liquid or gas at saturation point.
The saturated water in the steam property table is referred by subscript “f” and the saturated steam in the steam property table is referred by subscript “g.”
There are many properties which we can get from steam Tables like steam Temperature, Heat of Saturated Liquid, Latent heat of steam, Total heat of steam & Specific Volume etc.

How do I read steam Table?

Please refer below  Nomenclatures which you find in Steam Tables:

P – Pressure of the steam/Water
T – Saturation point of steam/water 
vg – Specific volume of saturated steam
vf - Specific volume of saturated water 
hf – Specific enthalpy of Saturated water
hfg – Latent of evaporation
hg – Specific enthalpy of Saturated steam

Saturated Steam Tables

In Saturated Steam Tables, The Temperature and the Pressure of the saturated steam are mutually dependent. When one of them is given, the other is determined. These tables usually include other related values such as specific enthalpy (h) and specific volume (v).

Since Saturated steam Temperature & Pressure are directly related to each other, we can use two different formats are available. (i) Pressure Based (ii) Temperature Based.

Also while referring any steam Tables, we must take care of Pressure units.

There are mainly two type of different systems of pressure measurement, with absolute pressure and sealed gauge pressure. The simplest way to explain the difference between the two is that absolute pressure uses absolute zero as its zero point, while gauge pressure uses atmospheric pressure as its zero point. Due to varying atmospheric pressure, gauge pressure measurement is not precise, while absolute pressure is always definite.

Superheated Steam Tables

If we further heated Saturated steam after its Boiling Points at Given Constant Pressure then it will converted in superheated Steam.

The additional heat and degrees of temperature are applied to steam above saturation point is known as “Degree of Superheat”.

For Handy steam Tables calculator go to Google Play store and Download SWAI App