What is a TV diagram in thermodynamics?

The Tv diagram contains three single phase regions (liquid, vapor, supercritical fluid), a two-phase (liquid+vapor) region, and two important curves – the saturated liquid and saturated vapor curves. The number of regions and curves will increase when we consider solids.

What is a critical point on PV or TV curves?

When pressure becomes as high as Pcr (critical pressure), the saturated liquid state and the saturated vapor state become a single point in T-v diagram. This point is called the critical point. For water, Pcr equals 22.09 MPa, Tcr (critical temperature) equals 374.14 oC.

What is a Ph diagram?

A p-h diagram is a figure with a vertical axis of absolute pressure and a horizontal axis of specific enthalpy. It is an important diagram used frequently for a performance calculation of a refrigerating machine. A p-h diagram is made respectively for a specified refrigerant.

What is the quality in thermodynamics?

Quality Vapor and Mass Equation – Thermodynamics – Thermodynamics. When a substance exists as part liquid and part vapor at saturation conditions, its quality (x) is defined as the ratio of the mass of the vapor to the total mass of both vapor and liquid.

What is the importance of critical point on phase diagrams?

The critical point on a phase diagram represents the temperature and pressure combination in which the liquid and vapor form of the substance in question both become indistinguishable from each other.

What is difference between critical point and triple point?

The triple point represents the combination of pressure and temperature that facilitates all phases of matter at equilibrium. The critical point terminates the liquid/gas phase line and relates to the critical pressure, the pressure above which a supercritical fluid forms.

What is P-V diagram give an example?

A pressure–volume diagram (or PV diagram, or volume–pressure loop) is used to describe corresponding changes in volume and pressure in a system. They are commonly used in thermodynamics, cardiovascular physiology, and respiratory physiology.