Enthalpy of Steam || How to calculate enthalpy of steam hindi || Steam table || steam enthalpy

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How to calculate enthalpy of steam

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Total enthalpy in saturated steam at atmospheric pressure (hg) = 2 675 kJ/kg. Therefore, at the lower pressure state of 0 bar g. Total enthalpy in the water = 0.888 kg x 419 kJ / kg = 372 kJ (A) Total enthalpy in the steam = 0.112 kg x 2 675 kJ / kg = 299 kJ (B)
What is enthalpy of steam
ENTHALPY OF WATER, LIQUID ENTHALPY OR SENSIBLE HEAT (Hf) OF WATER

This is the heat energy required to raise the temperature of water from a datum point of 0°C to its current temperature.

At this reference state of 0°C, the enthalpy of water has been arbitrarily set to zero. The enthalpy of all other states can then be identified, relative to this easily accessible reference state.

Sensible heat was the term once used, because the heat added to the water produced a change in temperature. However, the accepted terms these days are liquid enthalpy or enthalpy of water.

At atmospheric pressure (0 bar g), water boils at 100°C, and 419 kJ of energy are required to heat 1 kg of water from 0°C to its boiling temperature of 100°C. It is from these figures that the value for the specific heat capacity of water (Cp) of 4.19 kJ/kg °C is derived for most calculations between 0°C and 100°C.

Properties of Steam
A better understanding of the properties of steam may be achieved by understanding the general molecular and atomic structure of matter, and applying this knowledge to ice, water and steam.

A molecule is the smallest amount of any element or compound substance still possessing all the chemical properties of that substance which can exist. Molecules themselves are made up of even smaller particles called atoms, which define the basic elements such as hydrogen and oxygen.

The specific combinations of these atomic elements provide compound substances. One such compound is represented by the chemical formula H2O, having molecules made up of two atoms of hydrogen and one atom of oxygen.
Enthalpy of Steam || How to calculate enthalpy of steam hindi || Steam table || steam enthalpy
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