ΕΝ0112 THERMODYNAMICS II (CORE 1)

ΕΝ0112 THERMODYNAMICS II (CORE I)

Course information


Course Category
Course Type
Secretary Code
Semester
Duration
ECTS Units
Sector

Instructor

Undergraduate
Core 1
EN0112
3rd (Winter)
5 hours/week
6
Energy Industrial Processes and Pollution Abatement Technologies

Papathanasiou Athanasios

Course Type: Undergraduate
Course Type: Core 1
Secretary Code: ΕΝ0112
Semester 3rd (Winter)
Duration 5 hours/week
ECTS Units: 6
Sector: Energy Industrial Processes and Pollution Abatement Technologies
Instructor: Stamatellos Tasosς

Aim

This is the second Thermodynamics course, which introduces the student to important applications of Engineering Thermodynamics.
The student must understand thethermodynamics of basic thermal equipment, the thermodynamics of mixtures and combustion, and to be able to perform basic thermodynamic and exergy analysis calculations. 

Syllabus

1. Relationships of Thermodynamic Properties: p‐v‐T calculations using static equations with two or more gas constants. Understanding and applying the concept of total differential calculations of thermodynamic properties. Calculate Δu, Δh and Δs using the Clapeyron equation for phase change.
2. Ideal gas mixtures ‐ application to psychometrics: Description of ideal mix composition of gases through mass fractions / molecular fractions. Using the Dalton model for pressure correlation, volume and temperature and calculate U, H, and S change for ideal gas mixtures. Application mass, energy and entropy balances in ideal gas mixtures and mixing processes. Understanding psychometric terms: absolute / relative humidity, liquid air enthalpy and dew point temperature. Using the psychometric chart.
3. Exergy analysis: Understanding the basic concepts of exergy analysis:zero exergy reference environment, exergy transfer and destruction. Calculation of exergy as a constitutive property as well as the exergy change between two thermodynamic states, using appropriate data. Application of energy balances in closed systems as well as in control volumes in steady‐state flow processes. Definition and calculations of exergy efficiency.
4. Chemical reactions and Combustion: Perfect combustion definition of: stoichiometrically required air, air ratio,standard enthalpy of formation, calorific value of fuel and adiabatic flame temperature. Calculations of the above quantities in the combustion of solids, liquids and exhaust gases. Calculation of air ratio based on the composition of the exhaust gases. Calculation of degree of burning efficiency. Application of mass, energy and entropy balances to closed systems and control volumes where chemical reactions take place.
5. Chemical equilibrium and Phase equilibrium: Explanation of basic concepts of chemical and phase equilibrium, equilibrium criteria, equilibrium constant and Gibbs phase rule. Apply the equilibrium constant equation to relate the partial pressures of reactants/products with temperature, for single or multiple chemical reactions. Application of chemical balance concepts combined with energy balances. Equilibrium flame temperature determination. Apply the Gibbs phase rule.
6. Gas power generation cycles: Analysis of thermodynamic cycles of internal combustion engine, based on Otto and Diesel cycles. Plotting p  ‐ V and T – s diagrams, identifying properties. Application of energy, entropy and exergy balances. Determination of power output, thermal efficiency and average pressure. Analysis of thermodynamic cycles of gas turbines based on the Brayton cycle. Implementation of energy, entropy and exergy balance. Determination of power output, thermal efficiency and back work ratio and
effect of compressor pressure ratio on efficiency. Analysis of subsonic and supersonic flows through nozzles and diffusers, effect of cross‐section on properties, effect of backflow on massflow. Strangulation and shock wave appearance.
7. Refrigeration Thermodynamics  ‐ Heat Pumps: Understanding basic refrigerant cycles with cold vapor compression. Analysis of thermodynamic models of refrigerant cycles, illustrated in logp  ‐ h and T  ‐ s diagrams. Implementation of energy, entropy and exergy balances for the basic processes of the cycle. Definition and determination of Coefficient of Performance (COP) and cooling efficiency circles. Understand the effect of key refrigerant design and control parameters of the refrigerant cycle performance

Literature

Suggested Literature:

  • MICHAEL J. MORAN, HOWARD N. SHAPIRO, DAISIE D. BOETTNER, MARGARET B. BAILEY: Fundamentals
    of Engineering Thermodynamics Wiely 2014
  • Hans Dieter Baehr ThermodynamikGrundlagen und technische Anwendungen 12 Auflage Springer
    2005
  • Borgnakke C., Sonntag R.E.‐Fundamentals of Thermodynamics‐8 ed. Wiley 2013.
  • Mark Waldo Zemansky, Richard Dittman: Heat and thermodynamics an intermediate textbook‐7 ed.
    McGraw‐Hill (1997)                           

Related academic journals:                                       

  • Brennstoff‐Waerme‐Kraft (VDI)
Teaching Language

Greek

Teaching Method

Lectures, Exercises

Student Performance Evaluation

 

Final Exams100%
Workload (in hours)

 

 

ActivitySemester Workload
Lectures55 
Laboratory practice15 
Exercises45 
Use of software
Tutorials30 
Course Total150