INTRODUCTION

In the science of thermodynamics, this deals with energy and its various forms with its transformation from one form to another. Two particularly important transient forms are defined namely work and heat. When a temperature difference exists a body there is a tendency to transfer heat. The amount of heat transferred is a function of the temperature difference and of the resistance in the heat transfer path.
When it is desired to increase the heat removal between a structure and surrounding ambient fluid, it is a common practice to utilize extended surface attached to base surface. The arrangement of extended surface is called fin.

The surface areas used to increase the heat transmission rate are known as fin.
When it is necessary to increase the heat transfer rate between a structure and surrounding fluid, it is common practice to utilize fin, which increase the surface area of heat transfer and also increase heat transfer
The selection of suitable fin depends on different parameters like geometrical shape, fin spacing, fin height, base thickness, kinds of materials and surface finish, etc. Fin spacing played a dominant role in the transfer of heat radiation from one fin affected another and with the Change for each fin size shape factor changed.

There are so many devices that can be used for heat transfer. All of which are not applicable in every field. From the view point of industrial application there are So many zones where heat transfer is not advantageous considering space availability, economy, etc. Fins find numerous applications in mechanical engineering in the field of cooling.

PROBLEM STATEMENT:

In modern age heat exchange equipments have great Importance in many industrial processed or IC engines because it Increases the use of energy resources and the conversation and reuse of thermal energy. Thermal energy is more useful at higher temperature. In recycling thermal energy, the minimization of temperature difference is more important, International Center for Heat and Mass Transfer has concocted new techniques and application. It is observed that the power absorbed by the pump for water cooled engine is slightly higher than that of' air cooled engine. High specific output engines can be developed by developing finned surface. Thus fins play an important role in energy. Our thesis deals with the problem of finding the optimum configuration of the fin with maximum heat dissipation rate. For this purpose, this thesis is focusing; for the following objectives.
OBJECTIVES

l. Design and construction of rectangular fin, triangular fin and Inverse parabolic fin.
2. To determine the experimental and theoretical heat transfer rate by the combination of
i) Rectangular and triangular fin
ii) Rectangular and inverse parabolic fin
iii) Triangular and inverse parabolic fin.
3. To compare the theoretical and experimental heat transfer rate by the combination of
i) Rectangular and triangular fin
ii) Rectangular and inverse parabolic fin
iii) Triangular and inverse parabolic fin.
4. To compare the experimental heat transfer rate by the combination of
i) Rectangular and triangular fin
ii) Rectangular and inverse parabolic fin
Triangular and inverse parabolic fin.
5. To plot graph for theoretical and experimental heat transfer rate per fin versus number of fin combination and efficiency versus number of fin combination.
6. Calculation of fin effectiveness for different fin combination.

LIMITATION OF STUDY
1. The experiment will be run by the use of experimental setup which was prepared by the previous batch students.
2. Only three types of fin will be taken under the study.
3. The experiment will be completed for constant spacing, base length, and height of fins.
4. The experiment will be run only by maintaining constant temperature at the base plate of fin, not by maintaining constant heat flux.
5. Fins were held only vertical position.
SCOPES OF STUDY:
The laws which govern heat transmission are very important to the engineer in the design, constrictions, testing and operation of heat transfer apparatus. Fins find numerous applications in mechanical engineering in the field of cooling of internal combustion engines, refrigeration and air conditioning and so on. Fins are also used in electrical apparatus in which generated heat must be efficiently dissipated. Example: motor, generator, transformer etc.The application of fin is equally important in the field of the other branches of engineering.