B.TECH. (SIXTH SEMESTER) MECHANICAL ENGINEERING
ME 302 E REFRIGERATION
AND AIRCONDITIONING
L
T P/D
Total
Theory : 100
Marks
3
1 
4
Sessional : 50 marks
Duration of Exam : 03 hours
UNIT I
Basics of heat pump &
refrigerator; Carnot’s refrigeration and heat pump; Units of refrigeration; COP
of refrigerator and heat pump; Carnot’s COP; ICE refrigeration; evaporative
refrigeration; refrigeration by expansion of air; refrigeration by throttling
of gas; Vapor refrigeration system; steam jet refrigeration; thermoelectric
cooling; adiabatic demagnetization.
Basic principles of
operation of air refrigeration system, BellColeman air refrigerator;
advantages of using airrefrigeration in aircrafts; disadvantages of air
refrigeration in comparison to other cold producing methods; simple air
refrigeration in air craft; simple evaporative type air refrigeration in
aircraft; necessity of cooling the aircraft.
UNIT II
Simple Vapor Compression
Refrigeration System; different compression processes( wet compression, dry or
dry and saturated compression, superheated compression); Limitations of
vapour compression refrigeration system if used on reverse Carnot cycle;
representation of theoretical and actual cycle on TS and PH charts; effects
of operating conditions on the performance of the system; advantages of vapour
compression system over air refrigeration system.
Methods of improving COP;
flash chamber; flash inter cooler; optimum interstate pressure for two stage
refrigeration system; single expansion and multi expansion processes; basic
introduction of single load and multi load systems; Cascade systems.
Basic absorption system;
COP and Maximum COP of the absorption system; actual NH_{3 }absorption
system; functions of various components; LiBr absorption system; selection of
refrigerant and absorbent pair in vapour absorption system; Electro
refrigerator; Comparison of Compression and Absorption refrigeration systems;
nomenclature of refrigerants; desirable properties of refrigerants; cold
storage and iceplants.
UNIT III
Difference in refrigeration
and air conditioning; Psychometric properties of moist air (wet bulb, dry bulb,
dew point temperature, relative and specific humidity of moist air, temperature
of adiabatic saturation); empirical relation to calculate P_{v} in
moist air.
Psychometric chart,
construction and use, mixing of two air streams; sensible heating and cooling;
latent heating and cooling; humidification and dehumidification; cooling with
dehumidification; cooling with adiabatic humidification; heating and
humidification; bypass factor of coil; sensible heat factor; ADP of cooing
coil; Air washer.
UNIT IV
Classification; factors
affecting air conditioning systems; comfort airconditioning system; winter air
conditioning system; summer airconditioning system; year round air
conditioning. unitary airconditioning system; central air conditioning system;
room sensible heat factor; Grand sensible heat factor; effective room sensible
heat factor.
Inside design conditions;
comfort conditions; components of cooling loads; internal heat gains from
(occupancy, lighting, appliances, product and processes); system heat gain
(supply air duct, A.C. fan, return air duct); external heat gain (heat gain
through building, solar heat gains through outside walls and roofs); solar air
temperature; solar heat gain through glass areas; heat gain due to ventilation
and infiltration.
Transport air conditioning;
evaporative condensers, cooling towers; heat pumps.
References
and Text books
·
Refrigeration
and airconditioning by C.P arora
·
Basic
Refrigeration and airconditioning by Annanthana and Rayanan, TMG
·
Refrigeration
and airconditioning BY Arora and Domkundwar, Dhanpat rai
NOTE: In the semester examination, the examiner
will set 8 questions in all, at least two questions from each unit, and
students will be required to attempt only 5 questions, at least one from each
unit.
B.TECH. (SIXTH SEMESTER) MECHANICAL ENGINEERING
ME 304 E TRIBOLOGY
L
T P/D
Total
Theory :
100marks
3
1

4
Sessional : 50 marks
Duration of Exam : 03 hours
UNIT I
Introduction to tribological
systems and their characteristic features; analysis and assessment of surface;
topography; deterministic and stochastic tribomodels for asperity contacts;
techniques of surface examination; technological properties of surfaces.
Quantitative laws of
sliding friction, causes of friction, adhesion theory, laws of rolling
friction, measurement of friction.
UNIT
II
Introduction, mechanism of
wear, types of wear, quantitative laws of wear, measurement of wear, wears
resistance materials.
UNIT III
Introduction, dry friction,
boundary lubrication, hydrodynamic, hydrostatic and elastohydrodynamic
lubrication, functions of lubricants, types and properties, lubricant
additives.
Principles, application to
rolling contact bearings, cams, Gears.
UNIT
IV
Geometry and pressure
equation of journal bearing, hydrostatic bearings, thrust bearings, porous
bearings and hydrodynamic gas bearings. Journal bearings with specialized
applications. General requirements and different types of bearing materials.
Suggested
Reading
·
Tribology
in Indertrion By Sushil Kumar Srivastava
·
Introduction
to Tribology of Bearings By B.C. Majumdar ; A.H.Wheeler
·
Principles
of Tribology – By J. Halling, Macmillan
·
Mechanics
and Chemistry in Lubrication By Dorinson and Ludema , Elsevier
·
Friction
and wear of Materials By E. Robinowicz, Johan Wiley
·
Principles
of LubricationBy A. Cameron, Longmans
NOTE:
In the semester examination, the examiner will set 8
questions in all, at least two questions from each unit, and students will be
required to attempt only 5 questions, at least one from each unit.
B.TECH. (SIXTH SEMESTER) MECHANICAL ENGINEERING
ME 306 E MECHANICAL VIBRATION
L
T P/D
Total
Theory : 100
Marks
3
1
 4
Sessional
: 50 marks
Duration of Exam : 03 hours
UNIT I
Kinematics of simple
vibrating motion, Simple harmonic motions, Vectorial representation of harmonic
motion. Degree of freedom, Equations of motions, general solution of free
vibration, Phase plane method.
UNIT II
Damped free vibration,
undamped and damped forced vibrations, Vibrating isolation, Vibrating
instruments.
Undamped free vibration,
Principle modes, Influence coefficients, Coordinate coupling, Orthogonality,
Vibration absorbers.
UNIT III
Geometric method,
Stability of equilibrium points, Method of harmonic balance.
Influence coefficients,
Dunkerleys equation, Matrix iteration, Holzer method, Rayleigh method, and
RayleighRitz method.
UNIT IV
Transverse vibration of
strings, longitudinal vibrations of bars, Lateral vibration of beams, Torsional
vibration of circular shafts, whirling of shafts.
Introduction, Method of
Laplace transformation and response to an impulsive output, response to
stepinput, pulseinput, and phase plane method.
REFERENCE AND TEXT BOOKS: 
·
Mechanical
vibration  By G.K. Grover; Nemchand Chand and Sons
·
Mechanical
Vibration – By Thomson; Prentice Hall
·
Mechanical
Vibration  By Den Hartog; Mc Graw Hill
·
Introductory
course to mechanical vibrations – By Rao and Gupta; Wiley Eastern
NOTE:
In the semester examination, the examiner will set 8
questions in all, at least two questions from each unit, and students will be
required to attempt only 5 questions, at least one from each unit.
B.TECH. (SIXTH SEMESTER) MECHANICAL ENGINEERING
ME 308 E COMPUTER AIDED DESIGN AND
MANUFACTURING
L
T P/D
Total
Theory : 100 Marks
4
1

5
Sessional : 50
marks
Duration of Exam : 03 hours
UNIT I
Introduction to CAD/CAM,
Historical Development, Industrial look at CAD/CAM, Introduction to CIM Basic
of Geometric & Solid modeling, Coordinate systems, Explicit, Implicit,
Intrinsic and parametric equation.
Part families, Part
classification and coding, product flow analysis, Machine cell Design,
Advantages of GT.
UNIT II
Introduction,
Transformation of points & line, 2D rotation, Reflection, Scaling and
combined transformation, Homogeneous coordinates, 3D scaling, shearing,
rotation, reflection and translation, combined transformations, Orthographic
and perspective projections.
Algebric and geometric
forms, tangent & normal blending functions, re parametrization, Straight
line, conics, cubic splines, Bezier curves and Bspline curves.
UNIT III
Algebraic and geometric
forms, tangent & twist vectors, normal blending function,
reparametrization, Sixteen point form, four Curve form, Plane surface, ruled
surface
Surface of revolution,
tabulated cylinder Bicubic surface, bezier surface, Bspline surface
Solid models and
representation scheme Brep & CSG, sweep representation, Cell
decomposition, spatial occupancy enumeration.
UNIT IV
Introduction, fixed
programmable and flexible automation, Types of NC systems, MCU & other
components, Coordinate system, NC manual part programming, G & M codes,
part program for simple parts, Computer assisted part programming.
Introduction, FMS
component, Types of FMS, FMS layout, planning for FMS, advantage and
applications.
Introduction, conventional
process planning, Steps in variant process planning, types of CAPP, planning
for CAPP.
Suggested
Reading:
·
CAD/CAM
theory & practice (Ibrahim Zeid)
·
CAD/CAM
(Groover & Zimmer)
·
Numerical
control and computer aided manufacturing by RAO and Tiwari, TMG
NOTE:
In the semester examination, the examiner will set 8
questions in all, at least two questions from each unit, and students will be
required to attempt only 5 questions, at least one from each unit.
B.TECH. (SIXTH SEMESTER) MECHANICAL ENGINEERING
ME 310 E MACHINE DESIGN II
L
T P/D
Total Theory :
100Marks
2

6
8 Sessional : 50
marks
Duration of Exam : 04 hours
UNIT I
Classification of Gears;
Selection of type; Law of Gearing, Standard system of Gear tooth, Various
Failure modes, Interference, undercutting & minimum no. of teeth.
Force Analysis ,Beam
strength of Gear tooth, Effective load on tooth, Estimation of module
based on beam strength and wear strength, Gear lubrication, materials; Design
Procedure, Gear Box design.
Terminology, Force
Analysis, Virtual no. of teeth, Beam strength, Effective load, Wear strength.
Terminology, force
analysis, beam strength & wear strength, effective load on gear tooth
Terminology, properties,
force analysis, friction, material selection.
UNIT II
Design of flat belts
&Pulleys, Design /selection of V belts &Pulleys, Design/selection of
wire ropes, Design/selection of chains.
Single &multiple Plate
clutch, Cone clutch.
External
shoe brake, Internal shoe brakes.
UNIT III
Coil Springs, Leaf Springs.
Hydro dynamically
lubricated bearings, Selection of ball bearings, Selection of roller bearings,
Selection of taper roller bearings.
Mechanism Design, Design of
cam & Follower.
UNIT IV
Design of Cylinder, Design
of Piston, Design of Crank shaft, Design of connecting rod
Design of Crane Hook.
Design of Flywheels.
SUGGESTED
READING:
·
Design
of Machine Elements by Bhandari , TMH
·
Machine
Design by Sharma Aggarwal, Katson Publishers
·
PSG
Design Data Book by PSG College of Engg., PSG Publication
·
Machine Design an integrated Approch by Robert l Norton, prentice hall
·
Fundamental
of machine component design by R.C
Juvinnal, Johan wiley& sons
NOTE: In the semester examination, the examiner will set
8 questions in all, at least two questions from each unit, and students will be
required to attempt only 5 questions, at least one from each unit.
B.TECH. (SIXTH SEMESTER) MECHANICAL ENGINEERING
ME 312 E REFRIGERATION AND AIR CONDITIONING
(PRACTICAL)
L
T P/D
Total
Practical
: 25Marks


2 2
Sessional
: 25 marks
Duration of Exam : 03 hours
LIST OF EXPERIMENTS
 Study & Performance of basic vapour compression Refrigeration Cycle.
 To find COP of water cooler.
 To study the walk in cooler.
 To study and perform experiment on vapour absorption apparatus.
 Perform the experiment & calculate various. Performance parameters on a blower apparatus.
 To find the performance parameter of cooling tower.
 To study various components in room air conditioner.
 To find RH of atmosphere air by using Sling Psychometric and Psychometric.
 To find performance of a refrigeration test rig system by using different expansion devices.
 To study different control devices of a refrigeration system.
 To study various compressor.
 To find the performance parameters of Ice Plant.
Note:
Total Ten experiments must be performed. At least
eight experiments should be performed from the above list. Remaining two
experiments may either be performed from the above list or outside the list.
B.TECH. (SIXTH SEMESTER) MECHANICAL ENGINEERING
ME 314 E TRIBOLOGY
& MECHANICAL VIBRATION (PRACTICAL)
L
T P/D
Total
Practical
: 25Marks


2 2
Sessional
: 50 marks
Duration of Exam : 03 hours
LIST
OF EXPERIMENT
 To study undamped free vibrations of equivalent spring mass system and determine the natural frequency of vibrations.
 To study the free vibration of system for different damper settings. Draw decay curve and determine the log decrement and damping factor. Find also the natural frequency.
 To study the Torsional vibration of a single rotor shaft system and to determine the natural frequency.
 To determine the radius of gyration of given bar using bifilar suspension.
 To verify the dunker ley’s rule.
 To study the forced vibration of system with damping. Load magnification factor vs. Frequency and phase angle vs. frequency curves. Also determine the damping factor.
 To study the pressure distribution of a journal bearing using a journal bearing apparatus.
 To determine the rate of wear of a metallic pin from the plot of displacement vs. time curves by using friction and wear monitor apparatus.
 To determine abrasion index of a material with the help of dry abrasion test rig.
 To evaluate the load wear index and the weld point of a lubricant with the help of a four ball stream pressure tester.
 To determine the two frequencies of Torsional spring type double pendulum & compare them with theoretical values.
 To determine the radius of gyration of a compound pendulum.
 To determine the radius of gyration of disc using Trifler suspension.
Note:
Total Ten experiments must be performed. At least
eight experiments should be performed from the above list. Remaining two
experiments may either be performed from the above list or outside the list.
B.TECH. (SIXTH SEMESTER) MECHANICAL ENGINEERING
ME 316 E COMPUTER
AIDED DESIGN & MANUFACTURING (PRACTICAL)
L
T P/D
Total
Practical
: 25Marks


2 2
Sessional
: 50
marks
Duration
of Exam : 03 hours
List of Experiments
Note:
Practical
will base on course No. ME  308 E.
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