What does the Mollier diagram show?
The Mollier diagram is a graphic representation of the relationship between air temperature, moisture content and enthalpy – and is a basic design tool for building engineers and designers. Air is a mixture of mostly oxygen, nitrogen and water vapor.
Which lines have on Mollier diagram?
A typical H-S Mollier diagram for a thermodynamic fluid such as steam is shown in Figure 1. Figure 1. The advantages of such a diagram are that vertical lines represent reversible processes and horizontal lines represent lines of constant energy.
What is the dryness fraction?
Explanation: Dryness fraction is defined as the ratio of mass of dry steam (vapour) to combined mass of dry steam (vapour) & mass of liquid in mixture.
How do you find the enthalpy of a Mollier chart?
Answer: h = hf + xhfg= 884.6 + 0.85 x 1910.3 = 2508.35 kJ/kg. Locate point ‘1’ at an intersection of 18 bar pressure line and 0.85 dryness fraction line. Read the value of enthalpy (h) and specific volume (v) from Mollier diagram corresponding to point ‘1’.
What is Mollier diagram of steam?
A Mollier diagram or steam tables allow determination of the energy available in a pound of steam for a specific pressure and temperature.
What is wet and dry steam?
Wet steam is produced by heating water in a flow through coil to over 212 degrees. Steam cleaners are the most common use of wet steam, which quickly condenses back to water. Dry steam, also known as saturated steam, is produced by heating water in a closed chamber.
What is the dryness fraction of saturated liquid?
The dryness fraction of steam is defined as the ratio of the mass of dry saturated steam to the total mass of wet steam containing it. It is used to quantify the amount of liquid phase (or vapour phase) in the mixture.
What is a dry bulb thermometer?
Dry-bulb temperature (Tdb, DBT or Td), is a measure of air temperature. Dry-bulb temperature can be measured by a thermometer exposed to the air but shielded from radiation and moisture. It can be expressed in Celsius (C), Fahrenheit (F) or Kelvin (K).
