15ME42T: Basic Thermal Engineering Mechanical 4th Sem Syllabus for Diploma DTE Karnataka C15 Scheme

Basic Thermal Engineering detail DTE Kar Diploma syllabus for Mechanical Engineering (General) (ME), C15 scheme is extracted from DTE Karnataka official website and presented for diploma students. The course code (15ME42T), and for exam duration, Teaching Hr/week, Practical Hr/week, Total Marks, internal marks, theory marks, duration and credits do visit complete sem subjects post given below. The syllabus PDFs can be downloaded from official website.

For all other mechanical 4th sem syllabus for diploma c15 scheme dte karnataka you can visit Mechanical 4th Sem Syllabus for Diploma C15 Scheme DTE Karnataka Subjects. The detail syllabus for basic thermal engineering is as follows.

Pre-requisites:

Knowledge of basic mathematics and Applied Science

Course Objectives:

1. It is a science of energy transfer and its effect on physical properties of substances. It is based upon observations of common experiences of energy (mainly heat) transfer.
2. This course will provide an understanding of the basic principles of thermodynamics which is must for understanding of major fields of mechanical engineering system

Course Outcomes:

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UNITI: BASIC CONCEPTS AND LAWS OF THERMODYNAMICS 10 Hrs

Basic concepts-Definitions :system – boundary, surrounding, working fluid and state of a system.-thermodynamic systems – closed, open and isolated systems with examples-Properties of system- Intensive and Extensive properties with examples.-Definitions for properties like Enthalpy (H), Entropy (‘s’) Internal energy (U)- Specific heat at constant pressure (Cp), specific heat at constant volume (‘Cv’) for a gas-Relation between Cp &Cv , characteristic gas equation, Universal gas constant, Definitions for quasi-static work flow-Law of thermodynamics-Zeroth, first & second laws of thermodynamics- simple problems on conversion of Heat into Work and vice versa., Problemson gas equations-Steady flow energy equation (without proof)

UNITII: THERMODYNAMIC PROCESSES 10 Hrs

Thermodynamic processes,- Explain with P-V and T-S diagram the Constant pressure, Constant volume, Isothermal, Isentropic, Polytrophic, Free expansion and throttling processes & equations representing the processes- Derivation for work done for the above processes-Calculation of change in internal energy, heat supplied or rejected, change in Entropy for the above processes. Simple problems on the above processes .

UNITIII: THERMODYNAMIC CYCLES 11Hrs

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UNIT IV: IC ENGINES- PERFORMANCE OF IC ENGINES 12Hrs

IC engine -definition-classification- Terminology of IC engine – Working principle of Two Stroke petrol & Diesel engine – Working principle of Four Stroke petrol & Diesel engine. Testing of IC engines-Rope brake Dynamometer-Formulae for Brake power, Indicated power Mechanical efficiency, Indicated thermal efficiency, Brake thermal efficiency, Air standard efficiency, Relative efficiency, Volumetric efficiency-Concept of Heat balance sheet for an engine-Simple problems on testing of I.C. engines and heat balance sheet

UNIT V:HEAT TRANSFER 05Hrs

Introduction -Methods of heat transfer– Conduction, convection and radiation -Fourier’s law of heat conduction-Newton law of cooling- Stefan-Boltzmann law -Heat transfer by conduction through slab and composite wall- Heat transfer by Radiation: -Thermal Radiation, Absorptivity, Transmissivity, Reflectivity, Emissivity, black and gray bodies, Radial heat transfer by conduction through thick cylinder-Simple problems on above (conduction only)

UNIT VI: GAS TURBINE AND JET PROPULSION SYSTEMS 04 Hrs

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Reference Books:

1. Heat Engines Pandya and Shah Charotar Publishing House
2. Thermodynamics and Heat power Engg. Mathur and Mehta Tata Mcgraw- Hill
3. A Text book of Thermal Engineering R S Khurmi& J K Gupta S Chand
4. Thermal Engineering P.L.Ballaney Khanna.Publishers
5. Thermal Engineering A. S. Sarao SatyaPrakashan
6. Thermal Engineering R K Rajput Laxmi.Publications
7. Practical Thermodynamics G D Rai Khanna Publisher

LIST OF SOFTWARES/ LEARNING WEBSITES:

1. http://www.nptel.iitm.ac.in/video.php?subjectId=112105123 (IIT-B Video lectures)
2. http://www.thermofluids.net/
3. http://www.grc.nasa.gov/WWW/k-12/airplane/thermo.html
4. http://www.youtube.com/watch?v=Xb05CaG7TsQ
5. http://www.youtube.com/watch?v=aAfBSJObd6Y
6. http://www.youtube.com/watch?v=DHUwFuHuCdw
7. http://www.youtube.com/watch?v=kJlmRT4E6R0
8. http://www.youtube.com/watch?v=GKqG6n6nAmg

Suggested List of Student Activities:

Note: the following activities or similar activities for assessing CIE (IA) for 5 marks (Any one)

• Each student should do any one of the following type activity or similar activity related to the course and before take up, get it approved from concerned Teacher and HOD.
• Each student should conduct different activity and no repeating should occur
1. Identify and list real situations which works on:
1. Zeroth law.
2. First law of thermodynamics.
3. Second law of thermodynamics.
2. Identify different Thermodynamic process in real situations.
3. Prepare charts of diesel, duel and gasoline cycles. Tabulate main points of differences between them.
4. Write the specifications of I.C.Engine of any two wheelers. Also Construct & explain cycle on which that I.C.Engine works.
5. Arrange visit to any gas turbine power plant/Diesel engine power plant, study the operational features of Gas turbines/Diesel engines

Course Delivery:

• The course will be delivered through lectures and Power point presentations/ Video

Model Question Paper:

(CIE)

1. Differentiate between intensive and extensive properties of a system. Give three examples for each.
2. A volume of 0.5 m3 of gas at a pressure of 10 bar and 200oC is expanded in a cylinder to 1.2 m3 at constant pressure. Determine the amount of work done by the gas and the increase in internal energy. Assume Cp = 1.005 kJ/kg K and Cv = 0.712 kJ/kg K.

OR A closed system undergoes a change in process in which 5 kJ of heat energy is supplied to the system. Determine the change in internal energy under the following conditions.

1. 1 kJ of work is done on the system.
2. 1.25 kJ of work is done by the system.
3. Derive an expression for work done during polytrophic process.
4. One kg of gas expands reversibly and adiabatically. Its temperature during the process falls from 515K to 390K, while the volume is doubled. The gas does 92 kJ of work in this process Calculate: The value Cp and Cv OR A gas has a molecular mass of 26.7. The gas is compressed through a ratio of 12 according to the law PV1.25 = C, from initial conditions of 0.9 bar and 333 K. Assuming specific heat at constant volume Cv = 0.79 kJ/kg K. Calculate per kg of mass, work done and heat flow across the cylinder walls. Gas constant and ratio of specific heat.

Model Question Paper:

PART-A 6×5=30 marks

1. Define the terms:
1. system
2. boundary and
3. surroundings.
2. A closed system received a heat transfer of 120 kJ and delivers a work transfer of 150 kJ. Determine the change of internal energy.
3. Derive expression for work done in constant temperature process with PV diagram.
4. A volume of 0.5 m3 of gas at a pressure of 10 bar and 200oC is expanded in a cylinder to 1.2 m3 at constant pressure. Determine the amount of work done by the gas and the increase in internal energy. Assume Cp = 1.005 kJ/kg K and Cv = 0.712 kJ/kg K.
5. List the assumptions made in thermodynamic air standard cycle.
6. Define IC engine and give the classification of IC engines.
7. Explain following terms:
1. Volumetric efficiency
2. Mechanical efficiency
8. State and derive Fourier’s law of heat conduction.
9. State the applications and limitations of gas turbine.

PART-B

1. Differentiate between intensive and extensive properties of a system. Give three examples for each. 04
2. A cold storage is to be maintained at -5owhile surroundings are at 35oC. The leakage from the surroundings into the cold storage is estimated to be 29 kW. The actual C.O.P. of the refrigeration plant is one – third of an ideal plant working between the same temperatures. Determine the power required to drive the plant. 06
1. Prove that Cp-Cv=R 04
2. A piston – cylinder containing air expands at a constant pressure of 150 KPa from a temperature of 285 K to a temperature of 550 K. The mass of air is 0.05 kg. Determine the heat transfer, work transfer and change in internal energy during the process Cp = 1.01 kJ/kg K and Cv = 0.72 kJ/kg K. 06
1. List the thermodynamic processes on gases. 04
2. A piston cylinder containing air expands at a constant pressure of 150 kpa from a temperature of 285 K to a temperature of 550 K. The mass of air is 0.05 kg. Determine the heat transfer, work transfer and the change in internal energy during the process. Take Cp = 1 kJ/kg K, R = 0.287 kJ/kg K. 06
1. Derive an expression for work done during polytrophic process. 04
2. A gas of mass 0.56 kg is expanded adiabatically from a pressure at 8 bar to 1 bar adiabatically. Initial temperature of the gas is 200oC. Determine the work done and change in internal energy. Take Cp = 1 kJ/kg K and Cv = 0.714 kJ/kg K. 06
5. Explain with the help of P-V and T-S diagrams working of Otto cycle and derive an expression for the air standard efficiency of it. 10
6. A certain quantity of air at a pressure of 1 bar and temperature 70oC is compressed reversibly and adiabatically until the pressure is 7 bar in an Otto cycle engine. 460 kJ of heat per kg of air is now added at constant volume.

Determine:

1. Compression ratio of the engine.
2. Temperature at the end of compression.
3. Temperature at the end of heat addition.Take for air, CP = 1 kJ/kg K and

Cv = 0.707 kJ/kg. 10

1. Compare petrol and diesel engines. 04
2. A heat engine has a piston diameter of 150 mm, length of stroke 400 mm and mean effective pressure 5.5 bar. The engine makes 120 explosions per minute. Determine the mechanical efficiency of the engine, if the engine BP is 5 kW. 06
8. The following data refers to a four stroke diesel engine, speed 300 rpm cylinder diameter 200 mm, stroke 300 mm, effective brake load 500 kg, circumference of the brake drum 400 mm, mean effective pressure 6 bar. Diesel oil consumption 0.1 litres/min, specific gravity of diesel 0.78, calorific value of oil = 43900 kJ/kg.

Determine :

1. Brake power
2. Indicated power
3. Frictional power 10
1. Define :
1. Conduction
2. Radiation. 03
2. Heat is conducted through a wall of room made of composite plate with a conduction of 134 W/mK and 60 W/mK and thickness 36 mm and 42 mm respectively. The temperature at the outer face is 96 0C and 8 0C. Determine the temperature at the interface of the two materials. 07
1. Explain closed cycle gas turbine with schematic diagram. 06
2. State the applications and limitations of gas turbine 04

For detail syllabus of all other subjects of BE Mechanical, C15 scheme do visit Mechanical 4th Sem syllabus for C15 scheme.

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