15ME63F: Refrigeration & Air Conditioning Mechanical 6th Sem Syllabus for Diploma DTE Karnataka C15 Scheme

Refrigeration & Air Conditioning detail syllabus for Mechanical Engineering (General) (70), C15 scheme is taken from DTE Karnataka official website and presented for diploma students. The course code (15ME63F), 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.

For all other mechanical 6th sem syllabus for diploma c15 scheme dte karnataka you can visit Mechanical 6th Sem Syllabus for Diploma C15 Scheme DTE Karnataka Subjects. For all other Elective Course subjects do refer to Elective Course. The detail syllabus for refrigeration & air conditioning is as follows.

Pre-requisites:

Knowledge of Applied science, Engineering Mathematics, Thermal engineering

Course Objectives:

Apply knowledge of mechanical engineering related to Refrigeration and Air conditioning equipments and expose the importance of refrigeration equipments, their control and repair and overhauling of these systems.

Course Outcomes:

For complete syllabus and results, class timetable and more pls download iStudy. Its a light weight, easy to use, no images, no pdfs platform to make students life easier.

UNIT I: INTRODUCTION TO REFRIGERATION 07Hrs

Refrigeration-Definition-Refrigerating effect-unit of refrigeration- Coefficient of performance-Types of Refrigeration-Ice, dry ice, Steam jet, Throttling, Liquid nitrogen refrigeration-Carnot refrigeration Cycle-Air refrigeration/Bell Coleman cycle, PV& TS diagram,(without derivation)-Advantage and disadvantages in air refrigeration-Simple problems.

UNIT II: REFRIGERATION CYCLES 10Hrs

Vapour compression refrigeration cycle – Basic Components,-Flow diagram of working of Vapour compression cycle – Representation of the vapour compression cycle on P-H, T-S & P-V Diagram -Expression for Refrigerating effect, work done and power required – Types of Vapour Compression cycle – Effects of super heating and under cooling, its advantages and disadvantages – Vapour Absorption refrigeration cycle- Flow diagram of working of Vapour Absorption cycle- Comparison of Vapour absorption and vapour compression system- Simple Electrolux system for domestic units-Simple problems on simple vapour compression cycle only

UNIT III: REFRIGERATION COMPONENTS &FLOWCONTROLS 12Hrs

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UNIT IV: REFRIGERENTS &APPLICATION OF REFRIGERATION 07Hrs

Refrigerants – properties – selection of refrigerants- Detection of refrigerants leakage- Alternate Refrigerants- testing and charging of refrigeration units -Applications of refrigeration- Cold storage -Dairy refrigeration-Icemaking industry-Transport refrigeration. Introduction to cryogenic engineering-concept.

UNIT V: AIR CONDITIONING 08 Hrs

Air conditioning -Definition- Factors affecting Air conditioning-Psychrometric processes- sensible heating and cooling-Humidifying and dehumidifying-Air conditioning types-List-Summer-Winter-use of psychometric charts- Equipments used in air conditioning cycle-air filter-dry air filter-humidifier-Types-Steam injection type humidifier-Dehumidifier-Spray type dehumidifier-Fans and blowers-Axial flow and centrifugal flow.

UNIT VI: REFRIGERATION & AIRCONDITIONING TOOLS 08Hrs

For complete syllabus and results, class timetable and more pls download iStudy. Its a light weight, easy to use, no images, no pdfs platform to make students life easier.

Text Books:

1. Refrigeration and Air Conditioning Domkundwar- Arora C P Dhanpat rai and co.
2. Refrigeration and Air Conditioning Arora C P Tata McGraw-Hill New Delhi, 3rd Edition, 2010
3. Basic Refrigetaion And air -conditioning P N Anathanarayan –
4. Principles of Refrigeration Roy.J Dossat, Pearson Education, 4th Edition , 2006
5. Refrigeration and Air Conditioning Jordon and Prister, Prentice Hall of India PVT Ltd., New Delhi, 1985.
6. Refrigeration and Air Conditioning Stoecker N.F and Jones, TMH NewDelhi,2nd Edition 1982.

LIST OF SOFTWARES/ LEARNING WEBSITES:

1. http://nptel.ac.in/courses/112105051/

ii download other power plant related videos from youtube.com for study purpose.

SPECIAL INSTRUCTIONAL STRATEGIES

1. Introduction to refrigeration lectures and Power point presentations/ Video/ Video movies
2. Refrigeration cycles Lectures/Presentations, Showing charts,
3. Refrigerants, system components Lectures/Presentations, Showing charts, Industrial visits to refrigerator repair shops
4. Application of refrigeration Lectures/Presentations, Showing charts, Industrial visits to Cold storage
5. Air conditioning Lectures/Presentations, Showing chart, Video/ Video movies
6. Refrigeration and air-conditioning tools Lectures/Presentations, Showing charts, Industrial visits to Refrigerator/Air conditioner repair work shops

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. Prepare list of various major power plants installed in Karnataka along with their total capacity.
2. Prepare charts of different high pressure boilers, gas turbine cycles, steam turbine power plant, wind turbine power plant, solar power plant, etc. on half imperial drawing sheet. Attach the same with term work.
3. Visit websites of NTPC, BHEL,, NHPC, NPCIL, GEDA, SUZLON, GE, SIEMENS, ENERCON and KPC etc and find out the technical information about their machineries or Plants.
4. Download technical specifications/ catalogues, videos or any other suitable presentations on gas turbine power plant
5. Download technical specifications/ catalogues, videos or any other suitable presentations on gas turbine power plant.
6. Visit diesel power plant available in your institute/ nearer to your institute and understand different elements, working, circuits, and specifications.

Model Question Paper:

(CIE)

1. Define 1 ton of refrigeration. Show how one ton refrigeration is expressed in kW. OR Or Explain refrigeration by throttling process with temperature -pressure diagram
2. List the advantages and disadvantages of vapour refrigeration over air refrigeration system.
3. An ammonia refrigerator produces 20 tones of ice at 00C in 24 hours. The temperature range of the system is -150C. The vapour leaving the compressor’s dry-saturated. Assuming actual COP is 75% of theoretical, calculate the power required to run the compressor. Take latent heat of ice as 335 kJ/kg. Use the following properties of ammonia.

Follow the table from pdf.

Model Question Paper:

PART-A

1. Define the following terms:
1. Refrigeration
2. Refrigerating effect
2. List the advantages and disadvantages of under cooling in the VCR system.
3. Define compressor, condenser.
4. Define refrigerant. List the types of refrigerant leak detector
5. Define following psychrometric properties
1. WBT
2. DBT
3. Humidity
4. Relative humidity
5. Dew point temp.
6. Explain the procedure of adding the oil to compressor
7. Explain hermetically sealed compressors.
8. Explain the effect of under cooling on the COP of a vapour compression refrigeration cycle with T-S diagram
9. Build the expression for volumetric efficiency of reciprocating compressor with P-V diagram.

PART-B 7×10=70 marks

1. Explain refrigeration by throttling process with temperature -pressure diagram. 05
2. Ice is formed at 00C from water at 200C. The temperature of brine solution is-100C reversible carnot cycle. Latent heat of ice is = 336kj/kg. find the Kg of ice formed per 1kWhr.Assume the refrigeration cycle is perfect. 05
2. Develop an expression for work done and COP of a vapour compression refrigeration cycle(dry saturated) with T-S diagram.
3. 1An ammonia refrigerator produces 20 tones of ice at 00C in 24 hours. The temperature range of the system is -150C. The vapour leaving the compressor’s dry-saturated. Assuming actual COP is 75% of theoretical, calculate the power required to run the compressor. Take latent heat of ice as 335 kJ/kg. Use the following properties of ammonia.

Follow the table from pdf.

4. Explain with sketch the natural convection evaporator(with and without baffle).
1. Write a note on automatic expansion valve with neat sketch. 05
2. Explain with sketch the operation of solenoid valve for variable refrigerant flow control. 05
1. Explain on transport refrigeration. 05
2. List any five essential properties of good refrigerants. 05
1. List any four different types of air filters used in air conditioning 04
2. Explain bag type dry air filter with sketch. 06
8. Explain the causes for faults in refrigeration system 10
9. Select the procedure should be adopted for replacing the evaporator(with and without valves) from the system 10
1. Explain with sketch the winter air conditioning system for mild and cold weather. 07
2. Classify refrigerants. 03

For detail syllabus of all other subjects of BE Mechanical, C15 regulation do visit Mechanical 6 syllabus for C15 Regulation.

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