Subject Code & Name: EL25C01 – Chemical Engineering Thermodynamics
Regulation: R-2025
Semester: III (Third Semester)
Branch: B. Tech. Chemical and Electrochemical Engineering (ChemElec) / B.Tech. Petrochemical Technology (Petrochem)
Credits / L-T-P: 4 Credits | L-T-P: 3-1-0
Course Objectives
- To provide a comprehensive understanding of thermodynamic principles, including PVT behavior of fluids, laws of thermodynamics, property relations, and their applications to fluid flow, phase equilibria, and reaction equilibria.
Full Unit-wise Syllabus
Unit I – First Law of Thermodynamics
Scope of thermodynamics, basic concepts and definitions, Equilibrium state and phase rule, Energy, Work, Temperature and Zeroth Law of Thermodynamics, reversible and irreversible process, First Law of Thermodynamics and its consequences. Application of first Law.
Activities: Analysis of thermodynamic systems, case studies based on the zeroth and First Law of Thermodynamics.
Unit II – Second Law and Thermodynamic Correlations
Limitations of the first Law, statements of second Law of Thermodynamics, Thermodynamic Temperature scale, Entropy, Third law of thermodynamics.
Activities: Interpretation and Plotting graph, examine the limitations of the First Law of Thermodynamics and justify the necessity for the Second Law, evaluate entropy and its implications in natural processes.
Unit III – PVT and Fundamental Properly Relations
Ideal gas- Equation of State involving ideal and real gas, Law of corresponding states, Compressibility chart, Thermodynamic Potentials, thermodynamic correlation, Maxwell relations. Clapeyron equation.
Activities: Analyze real gas behavior, assignment on thermodynamic relations.
Unit IV – Thermodynamics of Mixtures
Fugacity and Fugacity coefficient, Partial molar properties, ideal and non-ideal solutions, standard states definition and choice, Gibbs-Duhem equation, activity and property change of mixing, excess properties of mixtures. excess Gibbs free energy models.
Activities: Perform data-driven analysis of mixture behavior, apply the Gibbs– Duhem equation and excess Gibbs free energy models.
Unit V – Phase Equilibria
Phase equilibrium in ideal solution, Raoultss law, Henry’s law, Vapor Liquid Equilibrium at low, moderate and high pressures; bubble and dew point calculation, Phase diagrams for homogeneous systems, effect of temperature and pressure on azeotrope composition.
Activities: Perform vapor–liquid equilibrium calculations for ideal solutions, Analyze phase diagrams of homogeneous systems.
Unit VI – Reaction Equilibria
Chemical Reaction Equilibrium of single and multiple reactions, Standard Gibbs free change, equilibrium constant-effect of temperature; homogeneous gas and liquid phase reactions.
Activities: Analyze chemical reaction equilibria for single and multiple reactions, investigate the effect of temperature on equilibrium constant and composition, and solve equilibrium problems.
Course Outcomes (COs)
- CO1: Apply thermodynamic principles to solve energy balance and property related engineering problems.
- CO2: Analyze the fundamental laws of thermodynamics and their applications to engineering systems.
- CO3: Examine phase equilibrium, real gas behaviour and mixture properties using appropriate thermodynamic models.
- CO4: Assess system feasibility, equilibrium conditions and performance under varying operating parameters.
- CO5: Design and model thermodynamic systems by integrating thermodynamic laws, property relations, and equilibrium concepts.
Assessment Pattern (Quick Note)
- Weightage: Continuous Assessment: 40 %, End Semester Examinations: 60%
- Internal methodology: Assignments (20%), Quiz (20%), Solving of Competitive Examinations Questions (10%), Internal Examinations (50%)
Source: Official Anna University – B. Tech. Chemical and Electrochemical Engineering R-2025 Curriculum
Last Updated: September 2026
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