Understanding Phases in Thermodynamics

Specific volume is the volume occupied by a unit mass of a substance.

A superheated vapor is a vapor that is at a temperature higher than its saturation temperature for a given pressure.

A saturated liquid-vapor mixture contains both liquid and vapor phases in equilibrium at the saturation temperature and pressure.

<p>A saturated vapor is a vapor that is at its saturation temperature for a given pressure.</p> Signup and view all the answers

<p>A phase-change process is a physical change in which a substance transitions from one phase to another, such as from liquid to vapor.</p> Signup and view all the answers

<p>Understanding the path of a process is crucial as it describes how the system changes from one state to another and the interactions with the surroundings.</p> Signup and view all the answers

<p>A vapor that is not about to condense (i.e., not a saturated vapor).</p> Signup and view all the answers

<p>The temperature of the vapor increases as heat is added.</p> Signup and view all the answers

<p>The specific volume of a substance is the volume per unit mass of the substance.</p> Signup and view all the answers

<p>A state where both liquid and vapor phases coexist in equilibrium.</p> Signup and view all the answers

<p>For a saturated vapor, further heat transfer results in an increase in specific volume.</p> Signup and view all the answers

<p>Property diagrams help in understanding the variations of properties during phase-change processes.</p> Signup and view all the answers

<p>A pure substance has a fixed chemical composition throughout its phase change. Example: water, steam, refrigerants.</p> Signup and view all the answers

<p>Sensible heat is the thermal energy associated with a change in temperature while the phase remains constant.</p> Signup and view all the answers

<p>The compressibility factor (z) is obtained by intersecting the values of reduced pressure and temperature on a compressibility factor chart.</p> Signup and view all the answers

<p>The liquid and vapor phases, including their mixture.</p> Signup and view all the answers

<p>Specific volume is the volume occupied by a unit mass of a substance. It varies with phase and temperature.</p> Signup and view all the answers

<p>Understanding the phase-change process is essential for calculating the properties of a pure substance.</p> Signup and view all the answers