APPLIED THERMODYNAMICS(18ME42)

APPLIED THERMODYNAMICS

Course Code:18ME42

CIE Marks:40

SEE Marks:60

Teaching Hours /Week (L:T:P): 3:2:0

Credits:04

Exam Hours:03

Course Learning Objectives:

• To understand the applications of the first and second laws of Thermodynamics to various gas processes and cycles.
• To understand the fundamentals of I. C. Engines, Construction and Working Principle of an Engine and Compare Actual, Fuel-Air, and Air standard cycle Performance.
• To study Combustion in SI and CI engines and its controlling factor in order to extract maximum power.
• To know the concepts of testing of I. C. Engines and methods to estimate Indicated, Brake and Frictional Power and efficiencies.
• To understand the theory and performance Calculation of Positive displacement compressor.
 • To understand the concepts related to Refrigeration and Air conditioning.
• To get conversant with Psychrometric Charts, Psychrometric processes, human comfort conditions.

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Module-1

Air standard cycles: Carnot, Otto, Diesel, Dual and Stirling cycles, p-v and T -s diagrams, description, efficiencies and mean effective pressures. Comparison of Otto and Diesel cycles.
I.C.Engines: Classification of IC engines, Combustion of SI engine and CI engine, Detonation, and factors affecting detonation, Performance analysis of I.C Engines, Heat balance, Morse test, IC Engine fuels, Ratings, and Alternate Fuels.

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Module-2

Gas power Cycles: Gas turbine (Brayton) cycle; description and analysis. Regenerative gas turbine cycle. Inter-cooling and reheating in gas turbine cycles. Introduction to Jet Propulsion cycles.

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Module-3

Vapour Power Cycles: Carnot vapor power cycle, drawbacks as a reference cycle. Simple Rankine cycle; description, T-S diagram, analysis for performance. Comparison of Carnot and Rankine cycles. Effects of pressure and temperature on Rankine cycle performance.
Actual vapor power cycles. Ideal and practical regenerative Rankine cycles, open and closed feedwater heaters. Reheat Rankine cycle. Characteristics of an Ideal working fluid in vapor power cycles.

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Module-4

Refrigeration Cycles: Vapour compression refrigeration system; description, analysis, refrigerating effect. Capacity, the power required units of refrigeration, COP, Refrigerants, and their desirable properties, alternate Refrigerants. Air cycle refrigeration; reversed Carnot cycle, reversed Brayton cycle, vapor absorption refrigeration system.
Pscychrometrics and Air-conditioning Systems: Psychometric properties of Air, Psychometric Chart, Analyzing Air-conditioning Processes; Heating, Cooling, Dehumidification and Humidification, Evaporative Cooling. Adiabatic mixing of two moist air streams. Cooling towers.

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Module-5

Reciprocating Compressors: Operation of single-stage reciprocating compressors. Work input through the p-v diagram and steady-state steady flow analysis. Effect of Clearance and Volumetric efficiency. Adiabatic, Isothermal and Mechanical efficiencies. Multi-stage compressor, saving in work, Optimum intermediate pressure, Inter-cooling, Minimum work for compression.
Steam nozzles: Flow of steam through nozzles, Shape of nozzles, the effect of friction, Critical pressure ratio, Supersaturated flow.

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Course Outcomes: At the end of the course the student will be able to:

CO1: Apply thermodynamic concepts to analyze the performance of gas power cycles.
 CO2: Apply thermodynamic concepts to analyze the performance of vapor power cycles.
 CO3: Understand the combustion of fuels and the performance of I C engines.
 CO4: Understand the principles and applications of refrigeration systems.
CO5: Apply Thermodynamic concepts to determine performance parameters of refrigeration and air-conditioning systems.
CO6: Understand the working principle of Air compressors and Steam nozzles, applications, the relevance of air and identify methods for performance improvement.

Question paper pattern:

• The question paper will have ten full questions carrying equal marks.
• Each full question will be for 20 marks.
• There will be two full questions (with a maximum of four sub questions) from each module.
• Each full question will have a sub-question covering all the topics under a module.
• The students will have to answer five full questions, selecting one full question from each module.

Textbook/s

1 Engineering Thermodynamics P.K. Nag
Tata McGraw Hill 6th Edition 2018

2 Applications of Thermodynamics V.Kadambi, T. R.Seetharam, K. B. Subramanya Kumar
Wiley Indian Private Ltd 1st Edition 2019

3 Thermodynamics Yunus A, Cengel, Michael A Boles
Tata McGraw Hill 7th Edition

Reference Books

1 Thermodynamics for engineers Kenneth A. Kroos and Merle C. Potter
Cengage Learning 2016

2 Principles of Engineering Thermodynamics
Michael J, Moran, Howard N. Shapiro Wiley 8th Edition

3 An Introduction to Thermo Dynamics
Y.V.C.Rao Wiley Eastern Ltd 2003.

4 Thermodynamics Radhakrishnan
PHI 2nd revised edition

5 I.C Engines Ganeshan.V
Tata McGraw Hill 4th Edi. 2012

6 I.C.Engines M.L.Mathur& Sharma.
Dhanpat Rai& sons-India