what is meant by the term enthalpy? how is it different from entropy?
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Entropy and enthalpy are two totally different state functions.Enthalpy is simpler to understand as u plus pv. In flow process,like boiler,turbine,compressor etc,change in enthalpy represents sum of work and heat transferred .
Entropy can be understood if you take an analogy. Work done is P dV. Where P is the pressure and dV is change of volume. Now replace work with Heat and P with T.Heat added is TdX. This X is entropy. Like V is property for computing work,S is property for computing heat transfer.
Entropy can be understood if you take an analogy. Work done is P dV. Where P is the pressure and dV is change of volume. Now replace work with Heat and P with T.Heat added is TdX. This X is entropy. Like V is property for computing work,S is property for computing heat transfer.
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In layman's terms enthalpy is the measure of energy in a "thermodynamic" system whereas entropy is the randomness in a system, like the amount of disorder in the particles.(atoms and molecules)
We measure the change in enthalpy of a system, because a system's total enthalpy can't be directly measured.The more energy present in a system, the more disorder or entropy there will be. Like in change in states of matter.
Hope it helps ! :)
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