ME-321 THERMAL ENGINEERING

fingersfieldMechanics

Feb 22, 2014 (3 years and 3 months ago)

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ME
-
321
THERMAL ENGINEERING

L

T

P

Cr









3

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3

6


1. BOILER AND RECIPROCATING COMPRESSOR:
-

Types, Water tube and fire tube boilers,
high pressure boilers, mountings and accessories, natural and forced circulation, draught
efficien
cy, fluidized bed boiler. Classification, single and multistage reciprocating
compressor, effect of intercooling, volumetric efficiency.


2. STEAM TURBINE:
-

Review of Rankine cycle, reheating and regeneration, binary
vapour cycle, reheat factor impulse tu
rbine pressure and velocity compounding, work
output and efficiency, constructional detail of turbine, blade design conservating reaction
turbine degree of reaction, bleeding of steam, losses in turbine, governing.


3. COMBUSTION IN S.I.ENGINES:
-

Introduct
ion, ignition limits, Stages of combustion in
S.I.
-

Engine, concept of combustion quality, effect of engine variable on ignition lag,
effect of engine variables on flame propagation rate of pressure rise, cycle to cycle
variations, abnormal combustion, det
onation, or knocking, effect of detonation theories of
detonation, chemistry of Knock or detonation effect of engine variables on knock or
detonation, control of detonation.


4. COMBUSTION IN C.I. ENGINE:
-

Introduction, combustion in C.I: engine, air fuel

ratio in
C.I. engines delay period or ignition lag, variable effecting delay period, diesel knock,
C.I. engine combustion chambers, Comparison of S.I., and C.I engines.


5. CARBURETION:
-

Introduction, properties of the air petrol mixtures, mixture
require
ments in steady state operation, distribution, transient mixture requirement, simple
or elementary carburetion, complete carburetor, carburetor types, and description of one
important make carburetor.


6. FUEL INJECTION:
-

Types of injection systems, fuel
pump, types of fuel injectors, types
of nozzles, quantity of fuel per cycle, size of nozzle orifice, injection timing.


7. IGNITION AND ENGINE COOLING:
-

Ignition system requirements, battery ignition
system, magneto ignition system, ignition tinting, spark

plug, spark plug heat range,
factor affecting spark operation. Cooling system, air cooling water cooling, comparison
of air and water cooling systems, radiators, cooling fan.


8. SUPERCHARGING:
-

Objectives of supercharging of S.I. and C,I. engines, superc
harging
limits, method of supercharging, superchargers.


9. TESTING AND PERFORMANCE:
-

Performance parameters, basic measurement,
measurement of speed, fuel consumption measurement, measurement of air consumption,
measurement of brake horse, power indicated

horsepower and friction, horse power,
performance of S.I. and C.I. Engine.




BOOKS RECOMMENDED:
-

1. Thermal Engineering



|

P.L. Ballaney

2. Thermal Engineering



|

R.S. Khurmi

3. Internal Combustion Engine


|

Sharma and Mathur

4. Internal Combustion E
ngine


|

V.Ganeshan

5. Thermal Engineering



|

R.K. Rajput








































ME
-
322

:
MACHINE
-
DESIGN
-
II


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1

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1. SPUR GEARS:
-

Nomenclature, involute gears, Lewis
equation and Lewis form factors,
working stress in gear teeth, dynamic loads on gear teeth, design of spur gear for wear,
causes of gear teeth failure.


2. HELICAL GEARS:
-

Nomenclature
-

virtual number of teeth, helix angle, free width,
velocity factors,
strength design, limiting
-

endurance, beam strength load, dynamic
loading, wear loads.


3. BEVEL GEARS:
-

Straight bevel gears


nomenclature, virtual, number of teeth
endurance load, dynamic load, wear load

AGMA standards
, design of gears whose axis
are
intersecting at right angle only, load, module.


4. WORM GEARS:
-

Nomenclature, Lewis equation for strength, design, design of worm
gears given approximate centre to centre distance, dynamic load, endurance load, wear
load, AGMA
-

Power reducing equations, e
fficiency of worm gear, check for wear load
and heat dissipations.


5. DESIGN OF CIRCULAR SHAFTS:
-

Design of circular shafts under pure torsion, shear
stress, solid and hollow shafts, design of shafts for strength and deflection. Combined
loading due to t
orsion and bending of shafts, principal stress and maximum stress,
equivalent bending moment and twisting moment.


6. DESIGN OF MULTISPEED GEAR:
-

Use of preferred numbers, design with speed
diagrams for gear boxes.


7. DESIGN OF SPRINGS:
-

Closed and o
pen coiled springs, strength and stiffness, optimum
design of helical springs, helical torsion springs, multileaf springs, He1ical springs of
non
-
circular wires.


BOOKS RECOMMENDED:
-

1. Design of M/c Elements




|

V.B.Bhandari

2. Machine Design





|

Pate
l, Sikh and Pandya

3. Machine Design





|

Shigley

4. Machine Design





|

Kulkarni

5. Machine Design





|

Sadhu Singh

6. Machine Design





|

R:K.Jain









ME323:


HEAT TRANSER



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P/D Cr

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1. INTRODUCTION:
-

Modes of heat trans
fer, conduction, convection and radiation.


2. CONDUCTION:
-

Fourier's law, thermal conductivity of solids, liquids and gases, factors
influencing thermal conductivity, general three dimensional heat conduction equation in
cartesion, cylinderical and spher
ical co
-
ordinats.


3. ONE DIMENSIONAL STEADY STATE CONDUCTION:
-

Heat flow through plane walls,
cylinders and spheres, heat source systems, plane wall and cylinder, critical thickness of
insulation, different types of fins, heat transfer from fins of unifo
rm cross section.


4. ONE DIMENSIONAL STEADY STATE LUMPED HEAT CAPACITY SYSTEMS:
-

Heat flow in
a semi infinite solid with sudden change of surface temperature, periodic
-

variation of
surface temperature.


5. CONVECTION:
-

Free and forced convection, basic
concepts of hydrodynamic and
thermal boundary layers, similarity conditions of heat transfer processes, equations of
motion and energy, application of dimensional analysis, empirical equation of convective
heat transfer
-
Reynold's analogy.


Fundamentals o
f boiling heat transfer, pool boiling, heat transfer in condensation,
drop wise and film condensation, empirical equations.


6. RADIATION:
-

Thermal radiation, monochromatic and total emissive power absorptivity,
reflectivity and transmissivity, black, grey

and real surfaces, Planck's distribution
-

law,
Wien's displacement law, Stefan
-
Boltzmann's law, Kirchhoff's law.


Heat transfer by radiation between black surface and grey surfaces, heat transfer
in the presence of re
-
radiating surface, electrical networ
k method of solving radiation
problems, radiation shields, shape factors.


7. HEAT EXCHANGERS:
-

Basic type of heat exchangers, fouling factor, overall heat
transfer co
-
efficient, logarithmic mean temperature difference, effectiveness
-
NTO
Methods of desig
n of single and multiple pass heat exchangers.


RECOMMENDED BOOKS:
-

1. Principal of Heat Transfer



-

Kreith

2. Engineering Heat. Transfer


-

Gupta and Prakash

3. Funamental of Heat Transfer


-

Mikhiyev

4. Heat Transfer




-

Holman

5. Heat and Mass Tra
nsfer



-

Eckert and Drake




ME
-
324 ELECTIVE
-
II: (a) SOLAR ENERGY THERMAL PROCESSES
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3 1 3 6


1. INTRODUCTION:
-

Energy demand and supply, energy crisis, renewable energy
resources, solar energy applications.


2. HEAT TRANSFER CONCEPTS:
-

Solar radiation, extra
-
terrestraial solar radiation, solar
radiation on earth surface, solar radiation measurements, radiation characteristics of
surfaces and bodies, selective surfaces, wind convection.


3. FLATE PLATE COLLECTORS:
-

General description of
flat plate collectors, general
characteristics, performance, effect of dust and shading, short term and long term
performance, material and cost, design of solar collectors.


4. FOCUSSING COLLECTORS:
-

General description of focussing solar co11ectors,
Conc
entrators, receivers and orienting system, general characteristics, performance
materials.


5. ENERGY STORAGE:
-

Energy storage in solar. processes system, different type of
storages, characteristics and capacity of storage medium.


6. SOLAR WATER HEATING:
-

Solar water heaters collectors and storage tanks, loads and
system size, genera1 characteristics and performance.


7. SOLAR PASSIVE HEATING AND COOLING:
-

Passive heating and cooling, green house
concept, roof ponds active heating and cooling, solar heat
ing, absorption cooling,
combined solar heating and cooling system performance, solar heat pump systems,
economics of solar heating and cooling.


TEXT BOOKS:
-

1. Solar Engineering of Thermal Processes
-
Diffie and Beckman Johan wiley (Text Book)

2. Solar Ene
rgy

-

H.P. Garg, McGrew Hill


REFERENCE:
-

1. Solar Heating and Coo1ing

-

Kreider and Kreith
-
McGraw Hill

2. Solar Energy Engineering


-

Sayigh
-
Academic ?r'ess











ME
-
324 ELECTIVE
-
II: (b)
MACHINE TOOL DESIGN

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3 6


1.

INTRODUCTION TO MACHINE TOOL DRIVES & MECHANISMS:

Working & auxiliary motions in machine tools, parameters defining the
working motions of a machine tool, Machine tool drives, Hydraulic
transmission & its elements, mechanical transmission & its e
lements, Techno
-
economical prerequisites for undertaking the design of new machine tool,
general requirements of machine tool design, layout of machine tool.

(9)

2.

REGULATION OF SPEED & FEED RATES:

Aim of speed & Feed Rate
Regulation, stepped Regulation of s
peed; Design of speed Box, Design of
Feed Box, Machine tool drives using multiple speed motors, special cases of
Gear Box Design, General Recommendations for developing the Gearing
Diagram, classification of speed & Feed Boxes.

(8)

3.

DESIGN OF MACHINE TOOL S
TRUCTURES
: Functions of M/C Tool
structures & their requirements, Design criteria for m/c tool structures,
Materials for m/c tool structures, Profiles of M/C tool structure, Basic Design
Procedure of machine Tool structures, Functions and type of Guide way
s,
Design of slide ways, Protecting devices for slide ways, functions of Spindle
units & requirements, Materials of Spindles.

(8)

4.

CONTROL SYSTEMS IN MACHINE TOOLS:

Functions, Requirements
and classification, control systems for charging speeds & Feeds cont
rol
systems for executing forming & Auxiliary motions, Manual control system,
Automatic control systems, Adaptive control systems.

(7)

5.

NUMERICAL CONTROL OF MACHINE TOOLS:
Fundamental concepts,
classification and structures of Numerical control systems, Ma
nual Part
Programming, Computer aided Part Programming.

(7)


BOOKS RECOMMENDED
:


1.

Machine Tool Design



N.K.Mehta (TATA McGraw Hill)


2.

Design of Machine Members


A.Vallance & V.L.Doughtie


3.

Numerical Control in


Manufacturing




F.W.Wilson






ME
-
3
24 ELECTIVE
-
II: (c)
METLLURGICAL ASPECTS


L

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P/D

Cr


IN METAL PROCESSING

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1


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1. INTRODUCTION OF FABRICATION TECHNIQUES:
-

Common metal processing methods
viz. casting, welding, metal cutting, forming and forging, influence of work materi
al
characteristics on manufacturability.


2. STRUCTURE AND PROPERTY RELATION:
-

Crystal structure, microstructure and its
evaluation, influence or microstructure on mechanical properties, methods of changing
the microstructure Fe
-
C equilibrium diagram, cont
inuous cooling curves.


3. METALLURGY OF METAL CASTING:
-

Nucleation, growth, concert of solidification of
metals and alloys, affect of casting parameters on microstructures, methods of grain
refinement Viz., cooling, vibration and alloying etc. gases in mo
lten metal and their
influence on casting qualities, methods to control gases.


4. WELDING METALLURGY:
-

Weld thermal cycle, heat affected zone (HAZ), calculation
of width of HAZ, cooling rate, solidification of weld metal, metallurgical changes in weld
met
al and HAZ, gas metal reaction, liquid metal reaction and solid state reaction,
weldability, factors affecting the weldability.


5. METALLURGY OF MACHINING AND FORGING:
-

Influence of microstructure on
machining and forging, factors affecting the machinabil
ity and forgeability, method of
improving the machinability by changing the microstructure, forging temperature on
microstructure of steel.



RECOMMENDED BOOKS:
-


1. Metallurgical Principles of Foundry



|

V Kondic

2. Welding, Brazing and Soldering (Metals

Hand Book)

|

ASM

3. Casting (Metals Hand Book)




|

ASM

4. Forming and Forging (Metals Hand Book)


|

ASM

5. Welding Hand Book





|

AWS

6. Metallurgy of Welding





|

Lancaster












ME
-
324 ELECTIVE
-
II: (d
) COMPUTATIONAL

METHODS IN FLUID DYNAMICS







AND HEAT TRANSFER
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3 1 3 6



1.

INTRODUCTION:
-

General remarks; compression experimental, theoretical and
numerical approaches; historical perspective.


2.

PARTIAL DIFFERENTIAL EQUATIONS:
-

Int
roduction; physical classification;
mathematical classification; well
-
posed problem system of equations; other
differential equation of interest.


3.

BASIC OF FINITE DIFFERENCE METHODS:
-

Introduction; finite differences;
difference representation of partial d
ifferential equations; stability
consideration.


4.

APPLICATION OF FINITE DIFFERENCES METHODS TO SELECTED MODEL
EQUATIONS:
-

Wave equation; heat equation; Laplace’s equation; Burger’s
equation (inviscid and viscous).


5.

APPLICATION OF SELECTED METHODS TO SELECT
ED PROBLEMS OF FLUID
FLOW AND HEAT TRANSFER:
-


Predictor
-
corrector method for two
dimensional incompressible, viscous flow, Crank
-
Nicolson method and Keller
Box Method of solving B.L. Fluid flow and heat flow equation, modified Box
method for heat equatio
n, ADI method for 3
-
D flow, artificial compressibility
method to solve inviscid flow.


6.

CASE STUDY:
-

Inviscid incompressible 2
-
D flow, b) incompressible laminar
viscous flow with and without heat transfer, 2
-
D impressible laminar B.L.
without heat transfer

d) 2
-
D incompressible turbulent B.L.with and without
heat transfer, steady and unsteady heat conduction in 2
-
D.



BOOK RECOMMENDED:
-


1.

Computational Fluid Flow &

Heat transfer





-

D.A.Anderson etal



Note:
-

Tutorial classes will be in the form of s
olving problems in computers.