Symbols used in refrigeration tables h specific enthalpy in kJ/kg p absolute pressure in kPa s specific entropy in kJ/kg t temperature in °C u specific internal energy in kJ/kg v specific volume in m kg Subscripts f refers to a property of liquid in equilibrium with vapour saturated liquid g refers to a property of vapour in equilibrium with liquid saturated vapour fg refers to a change in state by evaporation