15ME52T: Applied Thermal Engg. Mechanical 5th Sem Syllabus for Diploma DTE Karnataka C15 Scheme

Applied Thermal Engg. 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 (15ME52T), 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 5th sem syllabus for diploma c15 scheme dte karnataka you can visit Mechanical 5th Sem Syllabus for Diploma C15 Scheme DTE Karnataka Subjects. The detail syllabus for applied thermal engg. is as follows.

Pre-requisites:

Knowledge of Engineering Mathematics, Applied Science and Basic Thermal Engineering

Course Objectives:

1. This course will provide the basic knowledge of thermal engineering which will function as foundation in applications in major fields of mechanical engineering and technology notably in steam and nuclear power plants.
2. This course would develop knowledge and skills related to boilers, boiler mountings and accessories, compressors, heat exchangers, steam turbines etc. This course is thus very important for mechanical engineer.

Course Outcomes:

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UNITI: FORMATION OF STEAM 10 Hrs

Concept of two phase system – Formation of steam- Definition and representation of wet steam, dry steam, saturated steam and superheated steam on T-H Diagram.

Concept and determination of dryness fraction-Degree of superheat-Latent heat-sensible heat, enthalpy-entropy-Internal energy-External work of evaporation and specific volume of steamUse of Steam tables and Mollier chart- (Heat Entropy Chart).-Numerical examples based on above.

Steam vapour cycles-Carnot cycle- Schematic diagram -Representation on PV & T-S diagram-Rankine cycle-Schematic diagram- Representation on PV & T-S diagram-(No numerical Problems on steam vapour cycles)

Steam Calorimeters- Barrel Calorimeter, Separating Calorimeter, Throttling Calorimeter and combined Separating & Throttling calorimeters.-Limitations of Calorimeter-(No numerical Problems on Calorimeters).

UNIT II: STEAM BOILERS 10 Hrs

Steam boiler-Concept-definition-Indian Boilers Regulation (IBR)- Classification of boiler -function of boiler- Low pressure boilers- Sketch and working of Cochran boiler- Babcock and Wilcox boiler-Merits and demerits- High pressure boilers- Sketch and working of Lamont and Benson boiler- Merits and demerits- Comparison of water tube and fire tube boilers- Boiler mountings and accessories, Boiler draught system-concept and classification -steam jet draught.

UNIT III: STEAM CONDENSERS, COOLING TOWERS & NOZZELS 10Hrs

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UNIT IV: STEAM TURBINES 10 Hrs

Steam turbine -concept- classification – Working principle with line diagram of a simple DeLaval turbine – velocity diagram of impulse turbine- Expression for work done, axial thrust, tangential thrust, blade and diagram efficiency, nozzle efficiency- Compounding of steam turbine-Need for compounding- Pressure compounding.- Velocity compounding- Pressure velocity compounding. Problems on single stage impulse turbines (graphical method only) -Concept of reaction turbines – Parson’s – Delaval (No numerical).

UNIT V: AIR COMPRESSOR 06 Hrs

Air compressor-concepts, functions, classification and applications- Single stage reciprocating air compressor- construction and working (with line diagram) Expression for work done and power required by single stage reciprocating compressor (without derivation), Simple problems on work done and power required.

Multi stage compression – advantages of multistage compression-Rotary Compressors -working of rotary Compressor-Difference between reciprocating and rotary compressors -concept of screw compressor (oil free).

UNIT VI: REFRIGERATION AND AIR CONDITIONING 06 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
8. Thermal Engineering Mahesh M Rathore Mcgraw- Hill Education
9. Basic and applied thermodynamics P K Nag McGraw Hill education

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

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. Interpret steam tables, mollier chart and relationship between different thermodynamic properties.
2. Prepare Mollier charts and show different regions.
3. Visit to sugar factory / Dairy / steam power plant, Prepare Hand written Report on specifications of boiler and list of mountings and accessories with their functions, safety measured observed.
4. At least one visit of any power plant/ industry, student should observe the operational aspects, safety in handling boiler, air compressor, heat exchanger, cooling tower, condenser etc. and submit hand written report.
5. Collect/ the details and specifications of various types of Steam condensers/Cooling towers used in industry.
6. Collect/ download product catalogues with specification of various types of Air compressors used in industry.
7. Each student should prepare a detailed report showing the construction/components/Working of Domestic refrigerator or Air Conditioners

SPECIAL INSTRUCTIONAL STRATEGIES

1. FORMATION OF STEAM lectures and Power point presentations/ Video/ Video movies
2. STEAM BOILERS Lectures/Presentations, Showing charts, Video movies, Expose to real life industries situation, industrial visits
3. STEAM CONDENSERS, COOLING TOWERS AND STEAM NOZZELS Lectures/Presentations, Showing charts, Video movies, Expose to real life industries situation, industrial visits
4. STEAM TURBINES Lectures/Presentations, Showing chart, Expose to real life industries situation, industrial visits.
5. AIR COMPRESSORS Lectures/Presentations, Showing chart,
6. REFRIGERATION AND AIR CONDITIONING Lectures/Presentations, Showing chart, Expose to real life industries situation, industrial visits

Model Question Paper:

(CIE)

1. Explain Barrel type Steam Calorimeters with a neat sketch. OR Explain Separating type Steam Calorimeters with a neat sketch
2. Make use of the given data find the quantity of heat required to produce 1kg of steam at a pressure of 6 bar at a temperature of 250C, under the following conditions.
1. When the steam is wet having a dryness fraction 0.9,
2. when the steam is dry saturated,
3. when it is superheated at a constant pressure at 2500C assuming the mean specific heat of superheated steam to be 2.3 kJ/kg0K.
3. Choose the different system of producing draught in a boiler and mention their advantages and disadvantages
4. Explain the various types of draughts used in usual practice. OR Compare the advantages of high pressure boiler over low pressure boiler.

Model Question Paper:

PART-A 6×5=30 marks

1. List the advantages of superheated steam
2. Explain Barrel type Steam Calorimeters with a neat sketch
3. List the various types of draughts used in usual practice.
4. List the different types of steam – condensers.
5. List the function of cooling tower in a modem condensing plant
6. Explain the Working of simple De-Laval turbine with line diagram
7. Summarise the advantages and disadvantages of velocity compounded impulse turbines.
8. List the desirable properties of a secondary refrigerant.
9. Explain Single stage reciprocating air compressor with line diagram

PART-B 7×10=70 marks

1. Steam at 18 bar and dryness 0.9 is heated at constant pressure until dry and saturated. Find the increase in volume, heat supplied and work done per kg of steam. If the volume is now kept constant, find how much heat must be extracted to reduce the pressure to 14 bar.
2. Make use of the steam table,find the following :
1. Enthalpy and volume of 1 kg of steam at 12 1 bar and dryness fraction 0.9, and
2. Enthalpy and volume of 1 kg of steam at 12 1 bar and 225’C. Take the specific heat at constant pressure for superheated steam as 2.1 kJ/kg K.
1. Compare high pressure boiler and low pressure boiler
2. Explain the function of the safety valve
4. Outline the sketch and explain the working of a La-mount boiler
5. Outline the sketch and explain counter-flow low level jet condenser and list the advantages.
6. A convergent-divergent nozzle is required to discharge 2 kg of steam per second. The nozzle is supplied with steam at 7 bar and 1800C and discharge takes place against the back pressure of 1 bar. The expansion up to throat is isentropic and the frictional resistance between throat and exit is equivalent to 63 kJ/kg of steam. The approach velocity to the nozzle is 75 m/s and throat pressure is 4 bar. Estimate
1. Suitable areas of throat and exit,
2. Overall efficiency of the nozzle based on enthalpy drop between inlet pressure, temperature and exit pressure.
7. An impulse turbine with a single row wheel is to develop 99.3 kW, the blade speed being 150 m/sec. A mass of 2 kg of steam per second is to flow from the nozzles at a speed of 350 m/sec. The velocity coefficient of the blades may be assumed to be 0.8 while the steam is to flow axially after passing through the blades ring. Determine the nozzle angle, and the blade angles at inlet and exit assuming no shock. Estimate also the diagram efficiency of the blading.
8. The steam leaves the nozzle of a single-stage impulse wheel turbine at 900 m/sec. The nozzle angle is 20, the blade angles are 30 at inlet and outlet, and friction factor is 0.8. Calculate :
1. the blade velocity, and
2. the steam flow in kg per hour if the power developed by the turbine is 257’kW.
1. Explain winter Air Conditioning with neat sketch.
2. Explain Summer Air conditioning with neat sketch
10. It is desired to compress 17m3 of air per minute from 1 bar (100 kN/m2) and 21’C to a delivery pressure of 7 bar (700 kN/m2) in a single-stage, single-acting air compressor. Calculate the power required to drive the compressor and the heat rejected duhng compression to cooling water if the compression is
1. Isentropic (y = 1.4 for air), and
2. Isothermal.

For detail syllabus of all other subjects of BE Mechanical, C15 scheme do visit Mechanical 5th Sem syllabus for C15 scheme.

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