REFRIGERATION AND AIR CONDITIONING
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Course Title: REFRIGERATION AND AIR CONDITIONING |
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Scheme (L:T:P) : 4:0:0 |
Total
Contact Hours: 52 |
Course Code: 15ME63F |
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Type of Course: Lectures,
Self Study & Quiz |
Credit
:04 |
Core/
Elective: Elective |
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CIE: 25 Marks SEE:100 Marks |
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Prerequisites: Knowledge of Applied science,
Engineering Mathematics, Thermal engineering |
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Course Objectives: |
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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:
On successful completion of the course, the students will be able to
attain CO:
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Course Outcome |
CL |
Linked PO |
Teaching Hrs |
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CO1 |
Understand the principle of refrigeration and Know
the types of refrigeration |
R/U/A |
1,2 |
07 |
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CO2 |
Explain the concept of various refrigeration
systems and familiar with their advantages and disadvantages |
R/U/A |
1,2 |
10 |
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CO3 |
Know the constructional and working of refrigeration equipments such as
Compressor, condensers and Evaporators and the refrigerant flow controls |
R/U |
2 |
12 |
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CO4 |
Know the different types of refrigerants and Application of
refrigeration to various areas |
R/U/A |
2 |
07 |
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CO5 |
Appreciate the concept of Air Conditioning and know their types |
R/U/A |
2 |
08 |
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CO6 |
Familiarize the different tools used to install refrigeration system and Air Conditioner |
U |
2 |
08 |
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Total sessions |
52 |
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Legend: R: Remember U: understand A: Application An:
Analysis
COURSE-PO
ATTAINMENT MATRIX
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Course |
Programme Outcomes |
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1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
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REFRIGERATION & AIR CONDITIONING |
1 |
3 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
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Level
3- Highly Addressed, Level 2-Moderately Addressed, Level 1-Low Addressed. Method
is to relate
the level of
PO with the
number of hours
devoted to the
COs which address the given PO. If >40% of classroom sessions addressing a particular PO, it is
considered that PO
is addressed at
Level 3 If
25 to 40%
of classroom sessions addressing a particular PO, it is
considered that PO
is addressed at
Level 2 If 5
to 25% of
classroom sessions addressing a particular PO,
it is considered that PO is
addressed at Level
1 If
< 5% of classroom sessions addressing a particular PO, it is considered
that PO is considered not-addressed |
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COURSE CONTENT AND BLUE PRINT OF MARKS FOR SEE
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Unit No |
Unit Name |
Hour |
Questions to be set for
SEE/Marks |
Marks weightage |
weightage (%) |
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R |
U |
A |
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1 |
INTRODUCTION TO
REFRIGERATION |
07 |
5 |
5 |
5 |
15 |
10.34 |
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2 |
REFRIGERATION
CYCLES |
10 |
5 |
5 |
20 |
30 |
20.68 |
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3 |
REFRIGERANTS, SYSTEM COMPONENTS |
12 |
5 |
10 |
20 |
35 |
24.13 |
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4 |
APPLICATION OF
REFRIGERATION |
07 |
- |
5 |
10 |
15 |
10.34 |
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5 |
AIR
CONDITIONING |
08 |
5 |
5 |
10 |
20 |
17.24 |
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6 |
REFRIGERATION AND AIR- CONDITIONING TOOLS |
08 |
5 |
10 |
5 |
20 |
17.24 |
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Total |
52 |
15 |
40 |
80 |
145 |
100 |
Legend: R;
Remember, U: Understand A: Application
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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.
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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
Compressors - types of compressors, -Reciprocating compressor-Centrifugal
compressor- Hermetically sealed compressor-- condensers - Air Cooled, water
cooled -evaporators – natural convection, forced convection types –Flow
controls- Capillary tube- Automatic Expansion valve- Solenoid valve.
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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.
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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.
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Tools used in
refrigeration system- Tools used in Air conditioner installation- Installation
procedure of refrigeration systems, charging ,testing, adding the oil to
compressor , - Faults in refrigeration and air conditioning system- Servicing
procedure of Refrigeration system
®TEXT BOOKS
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Sl.No. |
Title of Books |
Author |
Publication |
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1. |
Refrigeration
and Air Conditioning |
Domkundwar- Arora C P |
Dhanpat rai and co. |
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2. |
Refrigeration and Air
Conditioning |
Arora C P |
Tata McGraw-Hill New Delhi, 3rd Edition, 2010 |
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3 |
Basic Refrigetaion And air – conditioning |
P N Anathanarayan |
- |
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4. |
Principles of Refrigeration |
Roy.J Dossat, |
Pearson Education, 4th Edition , 2006 |
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5 |
Refrigeration and Air
Conditioning |
Jordon and Prister, |
Prentice Hall of India PVT Ltd., New Delhi, 1985. |
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6 |
Refrigeration and Air
Conditioning |
Stoecker N.F and Jones, |
TMH NewDelhi,2nd Edition 1982. |
1.
, LIST OF SOFTWARES/ LEARNING WEBSITES:
i.
http://nptel.ac.in/courses/112105051/
ii download other power plant related videos from
youtube.com for study purpose.
SPECIAL INSTRUCTIONAL STRATEGIES
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UNIT NO |
UNIT NAME |
STARATEGIES |
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1 |
Introduction to
refrigeration |
lectures and Power point presentations/ Video/ Video
movies |
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2 |
Refrigeration cycles |
Lectures/Presentations, Showing charts, |
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3 |
Refrigerants, system
components |
Lectures/Presentations, Showing charts, Industrial
visits to refrigerator repair shops |
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4 |
Application of
refrigeration |
Lectures/Presentations, Showing charts, Industrial visits
to Cold storage |
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5 |
Air conditioning |
Lectures/Presentations, Showing chart, Video/ Video
movies |
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6 |
Refrigeration and air-conditioning tools |
Lectures/Presentations, Showing charts, Industrial visits to
Refrigerator/Air conditioner repair work shops |
SUGGESTED LIST OF STUDENT ACTIVITYS
Note: the
following activities or similar activities for assessing CIE (IA) for 5 marks
(Any one)
å
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.
å
Each student should conduct different activity and no repeating should occur
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1 |
Prepare list of various major power plants installed in Karnataka
along with their total capacity. |
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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. |
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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. |
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4 |
Download technical specifications/ catalogues, videos or any other
suitable presentations on gas turbine power plant |
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5 |
Download technical specifications/ catalogues, videos or any other
suitable presentations on gas turbine power plant. |
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6 |
Visit diesel power plant
available in your institute/ nearer to your institute and understand
different elements, working, circuits, and specifications. |
Course Assessment and Evaluation Scheme:
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What |
To who
m |
When/Where (Frequency
in the course) |
Max Marks |
Evidence collected |
Course
outcomes |
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Direct Assessment |
CIE |
IA |
Students |
Three IA
tests(Average of three tests will be computed) |
20 |
Blue
books |
1,2,3,4,5,6 |
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Student activities |
05 |
Activity sheets |
1,2,3,4,5,6 |
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SEE |
End Exam |
End of the course |
100 |
Answer scripts at BTE |
1,2,3,4,5,6 |
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Indirect
Assessment |
Student Feedback
on course |
Students |
Middle of the
course |
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Feedback
forms |
1,2,3 Delivery of course |
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End of Course
Survey |
End of the course |
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Questionnaires |
1,2,3,4,5,6 Effectiveness of Delivery
of instructions & Assessment Methods |
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CIE-
Continuous Internal Evaluation SEE- Semester End Examination
Note: I.A. test
shall be conducted for 20 marks. Average
marks of three
tests shall be rounded off
to the next higher digit.
Note to IA verifier: The following documents to be verified
by CIE verifier at the end of semester
1.
Blue books ( 20 marks)
2.
Student suggested activities report for 5 marks evaluated through appropriate rubrics.
3.
Student
feedback on course regarding Effectiveness of Delivery of instructions &
Assessment Methods
å MODEL OF RUBRICS /CRITERIA FOR
ASSESSING STUDENT ACTIVITY
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RUBRICS FOR ACTIVITY( 5
Marks) |
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Dimension |
Unsatisfactory |
Developing |
Satisfactory |
Good |
Exemplary |
Student Score |
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1 |
2 |
3 |
4 |
5 |
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Collection of data |
Does not collect any information relating to the topic |
Collects very limited information; some relate to the topic |
Collect
much information; but very limited relate to the topic |
Collects some basic information; most refer to the topic |
Collects a great deal of information; all refer to the topic |
Ex: 4 |
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Fulfill
team’s roles & duties |
Does not perform any duties assigned to the team role |
Performs very little duties but unreliable. |
Performs
very little duties |
Performs nearly all duties |
Performs all duties of assigned team roles |
5 |
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Shares work
equally |
Always
relies on others to do the work |
Rarely does the assigned work; often needs reminding |
Usually does the assigned work; rarely needs reminding |
Normally
does the assigned work |
Always does the assigned work without having to be
reminded. |
3 |
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Listen to
other Team mates |
Is always talking; never allows anyone else to speak |
Usually does most of the talking; rarely allows
others to speak |
Talks good; but never show interest in listening
others |
Listens, but sometimes talk too much |
Listens
and speaks a fair amount |
2 |
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Average / Total
marks=(4+5+3+2)/4=14/4=3.5=4 |
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