Subject Code & Name: ME25301 – Engineering Thermodynamics
Regulation: R-2025
Semester: III (Third Semester)
Branch: B.E. Mechanical Engineering (Mech)
Credits / L-T-P: 4 Credits | L-T-P: 4-0-0
Course Objectives
- This course introduces the fundamental principles and laws of thermodynamics related to energy, heat, work, and properties of pure substances.
- It develops the ability to analyze thermodynamic systems using the First and Second Laws, and to evaluate system performance using entropy, exergy, and property relations.
- The course also emphasizes solving engineering problems through analytical approaches.
Full Unit-wise Syllabus
Unit I – Basic Concepts
Continuum and macroscopic approach; thermodynamic systems (closed and open); thermodynamic properties and equilibrium; state of a system, state postulate for simple compressible substances, state diagrams, paths and processes on state diagrams, ideal gas equation of state; concept of temperature, zeroth law of thermodynamics, thermodynamic temperature scale.
Activities: Identify and report closed and open thermodynamic systems from daily life. Fabricate a transparent plunger–cylinder setup to demonstrate an adiabatic process. Demonstrate Boyle’s law and Charles’s law.
Unit II – First Law of Thermodynamics
Concept of energy and its various forms, concepts of heat, work and different modes of work; reversible and irreversible processes, concept of moving boundary work; first law applied to elementary processes, closed systems and control volumes, steady and unsteady flow analysis.
Activities: Develop a program to compute moving boundary work for different polytropic processes and plot P–V diagrams.
Unit III – Second Law of Thermodynamics
Limitations of the first law of thermodynamics, concepts of heat engines and heat pumps/refrigerators, Kelvin-Planck and Clausius statements and their equivalence; perpetual motion machines, Carnot cycle and Carnot principles/theorems; Clausius inequality and concept of entropy; microscopic interpretation of entropy, the principle of increase of entropy, T-s diagrams; second law analysis of control volume; exergy analysis of closed and open systems; basics of third law of thermodynamics.
Activities: Develop a program to generate P–v and T–s diagrams for a Carnot cycle and evaluate heat transfer, work, and efficiency. Develop a program to analyze energy balance, exergy balance, exergy destruction, and second-law efficiency of steady-flow systems.
Unit IV – Properties of Pure Substances
Pure substances and their phases; Phase-change processes of pure substances, property diagrams for phase-change processes; Gibbs phase rule, thermodynamic property tables and charts; real gases and van der Waals equation of state; compressibility factor, principle of corresponding states, generalized compressibility chart.
Activities: Develop a program to generate T–v, P–v, and P–T diagrams for water using thermodynamic property correlations. Develop a program to evaluate the ideal-gas approximation error for water vapour under varying conditions.
Unit V – Thermodynamic Relations
Reciprocity and cyclic relation, Helmholtz and Gibbs functions, Maxwell relations; Clapeyron and Clapeyron–Clausius equations; volume expansivity, isothermal and adiabatic compressibility, Mayer relation; Joule- Thomson coefficient.
Activities: Develop a program to numerically verify a Maxwell relation using thermodynamic property data.
Course Outcomes (COs)
- CO1: Explain fundamentals of thermodynamics including laws, properties of pure substances, and thermodynamic relations.
- CO2: Apply thermodynamic principles to calculate heat work, energy interactions, efficiencies, and properties.
- CO3: Analyze thermodynamic systems using energy entropy, and property relations to determine behavior and performance.
- CO4: Evaluate performance, efficiency, and irreversibility of thermodynamic systems and develop engineering solutions.
Assessment Pattern (Quick Note)
- Weightage: Continuous Assessment 40% | End Semester Examinations 60%
- Internal methodology: Quiz (5%), Assignments (25%), Review of GATE/ESE Questions, Internal Examinations (50%)
Source: Official Anna University – B.E. Mechanical Engineering R-2025 Syllabus
Last Updated: September 2026
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