This document summarizes a project submitted for a B.Tech in Mechanical Engineering. It discusses the development of a cooling system for an agro diesel engine. The project involved fabricating a cooler unit that supplies cooled air to cool engine water and other systems. A fan is mounted outside to aid cooling. Water is sprayed inside and collected at the bottom to be recirculated. Testing showed the apparatus worked comparably to professional models. The experience gained will help design simple machines.

1. Submitted in the partial fulfillment of the requirement for the award of
“B.TECH IN MECHANICAL ENGINEERING (VELTECH)”
SUBMITTED BY:
1. RAHUL DAS (VTU 2888)
2. RAGHU NANDAN MAHTO (VTU 2819)
3. D.PRAVEEN (VTU2873)
Under guidance of
Mr. KARTHIK.K, M.E(ENG.DESI)

2.  In this project , FABRICATION OF DEVELOPMENT OF
COOLING SYSTEM FOR AGRO DIESEL ENGINE”
 ” supplies the cooled air and at the same time this unit can
be used to Cool the water coming out from the engine or
any other system. A fan is mounted outside cooler unit.
 The water is sprayed inside the cabin from the top and
collected at the bottom. The same water is collected at the
bottom and recirculated through a pump.
 A fan is mounted outside the cooler unit in order to
supply the cooled air and also by using this unit as a
cooling system, the temperature of water is reduced to some
extent.

3.  This is a self – assessment test on the part of the students to assess
his competency in creativity.
 During the course of study, the student is put on a sound
theoretical foundation of various mechanical engineering subjects
and of course, to a satisfactory extent. Opportunities are made
available to him to work on different kinds of machines, so that he
is exposed to various kinds of manufacturing process.
 As a students learn more and more his hold on production
technology becomes stronger. He attains a stage of perfection,
when he himself is able to design and fabricate a device.
 This is the project work. That is the testimony for the strenuous
training, which the student had in the institute. This assures that
he is no more a student, he is an engineer.
 This report discuses the necessity of the project and various
aspects of planning , design, selection of materials, fabrication,
erection, estimation and testing.

4. Various temperature controlling systems available in market are
Discrete type ( semi-automatic) :-
In this type a comparator schematic of an op-amp is used for comparing and controls
action. Lowest 1 star rated system. Low in efficiency, No extra protections such as
leakage, over-current, Overheat, power loses, provided.
Discrete type ( automatic) :-
 In this type a regulating pulse width modulator IC is used for taking controlling
action. Moderately 3 star rated systems.Moderate in efficiency. Some extra
protections such as over-current, overheat, are provided.
Microcontroller based ( fully automatic ) :-
 This is most significant type, contains a microcontroller based fully Automatic
digital controlling system. Highly 5 star rated systems.Highly efficient, all extra
protections such as leakage, over- Current, overheat, power loses are provided.

5. TIME OF STUDY
MATERIAL
SELECTION &
PURCHASE
1WEEK
DRAWING
ASSEMBLY &
DETAILED
DRAWING
1 WEEK
WELDING &FABRICATION
2WEEK
ASSEMBLY &
TESTING
1 WEEK
SOLDERING AND
PROGRAMMING
WORK
WEEK 1CORRECTION
WORK
1 WEEK

6. ON/OFF
SWITCHLM 35
TEMPERATURE
SENSOR
MAIN
PROCESSOR
Power
supply
Interface
Card
LCD
DISPLAY
ALARM
(12VDC )

7.  Smaller in size.
 The cooling capacity can be
controlled in amount of forced air
 Can be located at remote places
because they do not depend upon
the water.
 It prevents seizing of engine
cylinder.

8.  Additional power to operate the fans
 The maintenance of fans, pump and
controller increases the operating
cost

9.  The test carried out on cooling tower indicates that the
apparatus has given correct values comparable to
apparatus manufactured by professionals
 This apparatus can be easily manufactured and
marketed. Cost of this apparatus is reasonable.
 The experience gained in this project will give self –
confidence to design simple machines and apparatus
on similar lines under entrepreneurs scheme of the
Government.

10.  Thermal Engineering – E. Sundaramoorthy
 Applied thermodynamics – Roy and Sarrow
 Thermal Engineering – P.L. Ballney
 Air Conditioning and Refrigeration – R.s.
Khurumi