Page Symbols Used in Tables and h specific enthalpy kilojoules per kilogram p absolute pressure kilopascals s specific entropy kilojoules per kilogram degree kelvin t thermodynamic temperature degrees Celsius u specific internal energy kilojoules per kilogram v specific volume cm per gram or x ‐ m kg or litres/kg Subscripts f refers to a property of liquid in equilibrium with vapour g refers to a property of vapour in equilibrium with liquid fg refers to a change by evaporation