- 2072 Magh · 4 marks
Define saturation temp, sub cooled liquid, quality, critical point
Short answer
Saturation temperature is the phase-change temperature. Subcooled liquid is below saturation temperature at its pressure. Quality is vapor mass fraction. Critical point is where saturated liquid and vapor lines meet (water: 22.09 MPa, 374.1°C).
Define the following terms: saturation temperature, sub cooled liquid, quality, critical point.
- Saturation temperature: the temperature at which a pure substance starts to boil (or condense) at a given pressure. Water boils at 100 °C at 101.325 kPa.
- Sub-cooled liquid (compressed liquid): liquid at a temperature below the saturation temperature at its pressure (or pressure above saturation pressure for its temperature). Heat must be added to bring it to boiling.
- Quality (dryness fraction), x: for a saturated mixture, the ratio of the mass of vapour to the total mass: x = m_g/(m_f + m_g). x = 0 for saturated liquid, x = 1 for saturated vapour; v = v_f + x v_fg.
- Critical point: the state at the top of the vapour dome where saturated liquid and saturated vapour lines meet and the two phases become identical. For water: P_c = 22.09 MPa, T_c = 374.1 °C, v_c = 0.003106 m³/kg. No boiling occurs above this pressure.
✓ Answer checked by Claude Opus 5.5 (high effort)
Related questions
- Define saturation temp, saturated vapor, quality, subcooled liquid, critical point · Fundamental of Thermodynamics & Heat Transfer, chapter 3
- Define saturation temperature, critical point, etc. · Fundamental of Thermodynamics & Heat Transfer, chapter 3
- Define saturation temp, subcooled liquid, degree of superheat, moisture · Fundamental of Thermodynamics & Heat Transfer, chapter 3
- Define critical point, quality, enthalpy, cv of ideal gas · Fundamental of Thermodynamics & Heat Transfer, chapter 3
- Rigid vessel at critical state cooled to 2000 kPa · Fundamental of Thermodynamics & Heat Transfer, chapter 3
- Define saturation pressure, saturated liquid, etc.; sketch · Fundamental of Thermodynamics & Heat Transfer, chapter 3
All Fundamental of Thermodynamics & Heat Transfer chapter 3 questions →