It is a project on low cost air blower made up of PVC pipe

1. Development of an air blower to expel the exhaust gas
Dept of Mechanical Engineering, PESITM, Shivamogga Page 1
CHAPTER 1
INTRODUCTION
Air blower machine is a simple and effective electrical device used in homes and
industries to blow away dust from every nook and corner. For gadgets and electronics
have delicate parts that cannot be cleaned with a cloth. This is when you need air blowers
to remove dust with its continuous air pressure. This durable and efficient machine saves
a good amount of time and effort consumed in cleaning and dusting tasks.
1.1 Types of Air Blowers
Depending on the power capacity, design of blades, size, and application, air blowers
come in different types.
Forward-curved: Here the design of the blade is in a curved direction. This creates a
higher velocity when rotating a low speed.
Fig 1.1: Forward curved air blower
Backward-curved: Here the blades rotate at a much higher speed as compared to forward-
curved blades. The flat blades move away from the direction of rotation. It is best for
tasks that require high-static pressure.
Fig 1.2:Backword curved air blower

2. Development of an air blower to expel the exhaust gas
Dept of Mechanical Engineering, PESITM, Shivamogga Page 2
Air foil: It has air foil-shaped blades that gradually curve down to narrow towards the
outer end.
Fig 1.3:Air foil air blower
Radial: Used in small exhaust systems, the blades are not curved and generally used for
cooling purposes.
Fig 1.4:Radial air blower
1.2 Applications of Air Blowers
Air blower machine is a simple and effective electrical device used in homes and
industries to blow away dust from every nook and corner. For gadgets and electronics
have delicate parts that cannot be cleaned with a cloth. This is when you need air blowers
to remove dust with its continuous air pressure.

3. Development of an air blower to expel the exhaust gas
Dept of Mechanical Engineering, PESITM, Shivamogga Page 3
CHAPTER 2
LITRETURE REVIEW
2.1 General
Blowers and fans are turbo machines widely used in present industrial and domestic life.
It is important to recognize that the design of such turbo machine is an interdisciplinary
process, involving aerodynamics, thermodynamics, fluid dynamics etc.
Yogesh R Pathak et al.[2020][1] A numerical analysis is carried out to understand the
flow characteristics for different impeller configurations of a single stage centrifugal. The
volute design is based on constant velocity method. Impeller blade geometry is created
with point by point method. Numerical simulation is carried out by CFD software
GAMBIT 2.4.6 and FLUENT 6.3.26.work includes geometry definition and grid
generation of computational domain. This process includes selection of grid types, grid
refinements and defining correct boundary conditions. From suction end to exit of volute,
the static pressure continuously goes on increasing at the expense of the velocity which
suggests conversion of kinetic energy in pressure energy. This suggests that volute
satisfies its function well.
Prof. Maheshshinde et al.[2019][2] Blower is used to deliver the air or gas with an
appreciable rise in pressure again the flow resistance. It is an important role in various
industries for air-conditioning systems, furnaces and dust or fume extraction systems
Based on the input data the design calculations has been carried out and modelled using
SOLIDWORK. This will provide optimised design of centrifugal blower this paper gives
the solution to above problems by optimization of centrifugal blower impeller by static
and modal analysis using FEA for the material MS.
PA PA MINN et al.[2019][3] There exist few design methodologies for centrifugal
blowers and fans in the literature. However unified design methodology particularly for
radial tipped centrifugal blowers and fans is not easily traceable in the literature available.
In this research paper they attempted to design a single stage radial type centrifugal
blower for used in required industrial area. The design blower can be developed a
pressure of 15.4396 psi (106.452 kPa) and deliver 2l2t ft3
/min (60 m3
/min) of air at 3450
rpm.

4. Development of an air blower to expel the exhaust gas
Dept of Mechanical Engineering, PESITM, Shivamogga Page 4
C. N. Jayapragasan & K. Janardhan Reddy [2017][4]Centrifugal fans play an important
role in the fluffs collection system for industrial cleaner. Therefore it has become
necessary to study on the parameters which influences the performance of the blower.
Parameters chosen for optimization are - fan outer diameter, number of blades and fan
blade angle. Taguchi’s orthogonal array method helps to find out the optimum number of
cases and the modelling has been carried out using SOLIDWORKS. ICEM CFD is used
for meshing the blowers and analysed using FLUENT. The result shows that the optimum
combinations are 190 mm outer diameter, 80° blade angle and 8 numbers of blades.
2.2 Summary
In Air blower design the major modification is about the conversion of kinematic energy
into pressure energy, for that the numerical analysis carried out to understand the flow
characteristics for different impeller configurations of a single stage centrifugal blower.
Unified design methodology particularly for radial tipped centrifugal blowers and fans is
not easily traceable in the literature available. Therefore, it has become necessary to study
on the parameters which influences the performance of the blower.

5. Development of an air blower to expel the exhaust gas
Dept of Mechanical Engineering, PESITM, Shivamogga Page 5
CHAPTER 3
OBJECTIVE OF THE WORK
3.1 Problem Statement
Air blower is a device which is generally used to blow the air with certain velocity. Air
blowers are used in industrial as well as house hold applications. Generally, in Engine
laboratory during the experimentation the exhaust gas will not completely expelled out of
the lab. In that purpose it is important to use a device to expel the exhaust gas outside. Air
blower is such a device which can be used for this purpose.
3.2 Objective
The main objective of this project is to design and development an air blower to expel the
exhaust gas in engine lab.

6. Development of an air blower to expel the exhaust gas
Dept of Mechanical Engineering, PESITM, Shivamogga Page 6
CHAPTER 4
METHODOLOGY
The methodology of the current project is as follows.
Fig. 4.1: Flow chart of Methodology of Project
4.1 Air Blower modelling using Solid Edge software
The parts of air blower are modelled using Solid Edge software.
Fig 4.1a: 12v DC motor Fig 4.1b: End cap Fig 4.1c: 2′/1.5′ Reducer
Fig 4.1d: 4′/2′ Reducer Fig 4.1e: 1′ Offset Fig 4.1f: 4′ Connecting Pipe
Air Blower modelling using Solid
Edge software
Selection of Materials for
developing air blower
Assembly of Air Blower
Performance Analysis of Air
Blower

7. Development of an air blower to expel the exhaust gas
Dept of Mechanical Engineering, PESITM, Shivamogga Page 7
Fig 4.1g: 1.5′ Connecting pipe Fig 4.1h:Propeller Fig 4.1i: Battery
4.2 Selection of Materials
The materials are selected for the development of an air blower are as follows.
i) Battery:As per the reaserch from the jounal papers the optimum motor capacity is 12v.
Fig. 4.2.1 Electric motor
ii) End Cap: The end cap of 4′ is used to hold the dc motor.
Fig 4.2.2 End cap
iii) Reducer: The reducer is used to reduce the pipe dia which as the dimension of 4′-2′
and 2′-1.5′.
Fig 4.2.3 Reducer

8. Development of an air blower to expel the exhaust gas
Dept of Mechanical Engineering, PESITM, Shivamogga Page 8
iv) Offset: An offset is used to connect two pipes with an angle of 45o
Fig 4.2.4 Actual part of offset
v) Connecting Pipes: These are used to connect the two pipes.
Fig 4.2.5 Connecting pipe
vi) Propeller: Propeller is made up of thin aluminium sheet and used to push the air from
motor.
Fig 4.2.6 Propeller
vii) Battery: As per the research from Journal papers the optimum battery capacity is 12
V and 7.5 Ah.
Fig 4.2.7 Battery

9. Development of an air blower to expel the exhaust gas
Dept of Mechanical Engineering, PESITM, Shivamogga Page 9
4.3 Assembly of the Air blower
4.3.1 Assembly of Model using Solid Edge
The air blower model is first prepared using solid edge software. Different components
are modelled separately as per the dimensions and assembled to get the final view. Based
on the developed model, the actual model is developed.
Fig 4.3: Model assembly using solid edge software
4.3.2 Assembly of the actual model
The materials are selected based on the research survey. The selected materials are
assembled in order to get the actual model of an air blower.
Fig 4.4: Actual model of an air blower

10. Development of an air blower to expel the exhaust gas
Dept of Mechanical Engineering, PESITM, Shivamogga Page 10
CHAPTER 5
RESULTS & DISCUSSION
Figure 5.1 shows the connection of air blower and anemometer to record the velocity. The
air blower is tested for the output velocity by the use of anemometer. The output velocity
achieved is 3.8 m/s.
Fig. 5.1: Air blower connected with anemometer to record the velocity

11. Development of an air blower to expel the exhaust gas
Dept of Mechanical Engineering, PESITM, Shivamogga Page 11
CHAPTER 6
CONCLUSION
The aim of the project is to develop an air blower for the application of laboratory
purpose to expel the exhaust gas of the engine to outside atmosphere. The air blower is
designed using solid edge software and is developed using suitable materials. The output
velocity of the air blower achieved by this project is 3.8m/s. The output velocity may be
increased by increasing the battery and motor capacity.

12. Development of an air blower to expel the exhaust gas
Dept of Mechanical Engineering, PESITM, Shivamogga Page 12
REFERENCE
1. Yogesh R Pathak, Kailas D Deore, Rohan R Ozarkar, “Effect of Impeller
Parameters on the Flow inside the Centrifugal Blower using CFD”, International
Journal of Recent Technology and Engineering (IJRTE), ISSN: 2277-3878,
Volume-8 Issue-6, March 2020
2. Prof. Kshirsagar S.R , MaheshShinde, ShubhamNandgude, DipakSalunkhe,
PoojaMagar, “A review on design analysis and optimization of centrifugal
blower”, International Research Journal of Engineering and Technology (IRJET),
E-ISSN: 2395-0056 p-ISSN: 2395-0072, Volume: 06 Issue: 11 | Nov 2019
3. Aye Mya Thandar, Phyoe Min Than, Nang Sein Mya, Pa Pa Minn,“Design of
5kW Radial Type Centrifugal Blower”, IRE Journals, Volume 3, Issue 2, ISSN:
2456-8880, AUG 2019.
4. C. N. Jayapragasan, k. Janardhan reddy, “Optimization and experimental study on
the blower for fluffs collection system”, Journal of Engineering Science and
Technology. Vol. 12, No. 5 (2017) 1318 - 1336