Question:
A Mollier chart is a plot between which of the following options ?
A Mollier chart is a plot between which of the following options ?
Show Hint
To remember the axes of a Mollier chart, associate it with the abbreviation "\( h-s \) diagram".
Enthalpy (\( h \)) is on the vertical axis and Entropy (\( s \)) is on the horizontal axis.
Enthalpy (\( h \)) is on the vertical axis and Entropy (\( s \)) is on the horizontal axis.
Updated On: Jul 21, 2026
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The Correct Option is B
Solution and Explanation
Step 1: Understanding the Concept:
A Mollier chart, also widely known as the enthalpy-entropy (\( h-s \)) diagram, is a thermodynamic property plot.
It is named after Richard Mollier, a German pioneer in experimental thermodynamics who introduced it in 1904.
This chart represents the thermodynamic properties of a working fluid (most commonly steam or refrigerants) over a wide range of temperatures and pressures.
Step 2: Detailed Explanation:
In a Mollier chart, the vertical axis (y-axis) represents the specific enthalpy (\( h \)) of the substance.
The horizontal axis (x-axis) represents the specific entropy (\( s \)) of the substance.
Enthalpy represents the total heat content of the system, while entropy is a measure of the molecular disorder or thermal energy unavailable for work.
By plotting enthalpy against entropy, the chart simplifies calculations related to steam turbines, compressors, and refrigeration cycles.
Isentropic processes (constant entropy) appear as vertical lines on this diagram, making it very easy to find the ideal work done during expansion or compression.
Isothermal (constant temperature) and isobaric (constant pressure) lines are also mapped on this chart, helping engineers easily determine the state of water, steam, or refrigerant under different conditions.
Therefore, the chart is a plot of enthalpy versus entropy.
Step 3: Final Answer:
A Mollier chart is plotted between Enthalpy (y-axis) and Entropy (x-axis).
A Mollier chart, also widely known as the enthalpy-entropy (\( h-s \)) diagram, is a thermodynamic property plot.
It is named after Richard Mollier, a German pioneer in experimental thermodynamics who introduced it in 1904.
This chart represents the thermodynamic properties of a working fluid (most commonly steam or refrigerants) over a wide range of temperatures and pressures.
Step 2: Detailed Explanation:
In a Mollier chart, the vertical axis (y-axis) represents the specific enthalpy (\( h \)) of the substance.
The horizontal axis (x-axis) represents the specific entropy (\( s \)) of the substance.
Enthalpy represents the total heat content of the system, while entropy is a measure of the molecular disorder or thermal energy unavailable for work.
By plotting enthalpy against entropy, the chart simplifies calculations related to steam turbines, compressors, and refrigeration cycles.
Isentropic processes (constant entropy) appear as vertical lines on this diagram, making it very easy to find the ideal work done during expansion or compression.
Isothermal (constant temperature) and isobaric (constant pressure) lines are also mapped on this chart, helping engineers easily determine the state of water, steam, or refrigerant under different conditions.
Therefore, the chart is a plot of enthalpy versus entropy.
Step 3: Final Answer:
A Mollier chart is plotted between Enthalpy (y-axis) and Entropy (x-axis).
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