Nomenclature

E Energy, kJ

Ex Exergy, kJ

ex Specific molar exergy, kJ/kmol

H Enthalpy, kJ

h Specific enthalpy, kJ/kg h Specific molar enthalpy, kJ/kmol -0

h Specific molar enthalpy at reference state, kJ/kmol -0

h f Specific molar enthalpy of formation, kJ/kmol n Number of moles per cycle, kmol/kmol H2

Q Heat, kJ

Specific molar reaction heat, kJ/kmol

Cycle temperature, °C

Reference-environment temperature, °C

Letters

Energy efficiency Exergy efficiency

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