Saturated Tables Flashcards
What does the subscript ‘s’ indicate in thermodynamics?
It indicates the saturation condition.
What is ps in thermodynamics?
Saturation pressure.
What does saturation mean in thermodynamics?
It means the fluid is on the edge of phase change—water and steam coexist.
What happens when fluids flow into a thermodynamic system?
They do work on the system.
What happens when fluids leave a thermodynamic system?
The system does work on them.
What is the equation for flow work?
Work = pV.
What is enthalpy (h)?
It is the internal energy (u) plus flow work (pV), i.e. h = u + pV.
What are the units of specific volume?
m³/kg.
What does subscript ‘f’ indicate?
It indicates liquid condition.
What does subscript ‘g’ indicate?
It indicates vapour condition.
What happens to vapour volume when temperature and pressure drop?
Vapour occupies a larger volume.
What provides pressure in a moving fluid?
The fluid must provide its own pressure at inlet and outlet.
What provides pressure in a contained fluid?
The walls of the container provide pressure all around.
What is the symbol and unit for enthalpy?
h (kJ/kg).
What is the symbol and unit for entropy?
s (kJ/kg·K).
What is the symbol and unit for specific volume?
v (m³/kg).
