The unidirectional/restricted heat flow concept sounds very strange but there are possibilities to accomplish this unlikely objective. Since all energies are inter related it would be possible to influence one form of energy very effectively with any other. So electrical as well as magnetic field can be used to alter the nature of heat flow. In the series of experiments associated with this project, the influence of electrical field and more importantly that of magnetic field will be studied. Taking the principle of conservation of energy into consideration interaction between various forms of energies is of great importance. We have well defined relations between various forms of energy and also various forms of energies have similar characteristics for example: potential difference in electrical energy is similar to temperature difference in case of heat energy . We have other supporting examples like Kirchhoff's laws. hence one may assume that "Since the restriction of current flow in one direction is possible(diodes, transistors), it may be also possible to restrict the heat flow in one direction" The reason why we are stressing on the study of effects of magnetism in heat flow is due to the fact that magnetism is based on the alignment of domains in particular format and deep into atomic level it is based on the electron spins. And heat flow through a material will be obviously affected by the atomic or domain arrangements in the material medium. At the initial stages of the project, the heat transfer through various modes(conduction, convection, radiation) will be studied without the presence of significant magnetic field and at the similar conditions of temperature and other parameters the heat transfer will be studied by applying magnetic fields of varying magnitudes. Depending on the results of initial experiments, more advanced concepts related to magnetic field as well as electric field will be applied for accomplishing the optimum results. There is a large number of researches going on about the concept of controlled heat flow. This is due to the scope of controlled heat flow in various applications. Moreover different approaches are observed in varying researches. Hence if the objectives are accomplished then rather than bringing slight changes to the current technologies there will be revolutions in various fields. The concept could find uses in "thermal management" applications for computers and electronics, buildings and even clothing. Another significant application could be thermal transistors in which the semiconductor materials would be replaced by magnetic materials.

1. CONTROLLED Heat Flow Using
Magnetism
By:
Divine Sebastian
11474T0301
Warangal Institute of technology & science

2. TOPIC OF THE PROJECT
 Thermal Engineering
 Heat Transfer
 Magnetism
 Interaction between various forms of
Energy

3. OBJECTIVES
Deduce a method to restrict the heat
flow through a thermally conducting
material completely or partially.
Analysis of effects of magnetism on
various modes of heat transfer.

4. PRINCIPLES USED
Electromagnetic induction
Heat transfer by electron drift
Mechanisms of heat transfer.
Conduction
Convection
Radiation
Advection

5. Restricted Heat Flow
 The effects of magnetism on heat
transfer will be studied and the
possibility for using magnetism to
control the heat flow will be analyzed.

6. ABSTRACT . Among all the principles upon which the existence of this
universe is explained, the most significant is the principle
of conservation of energy. According to the principle of
conservation of energy- "Energy can neither be created
nor destroyed, but it can be transformed from one form to
another form" and we have different forms of energies like
heat energy, mechanical energy, electrical energy and
magnetic field energy. Taking the principle of conservation
of energy into consideration interaction between various
forms of energies is of great importance. We have well
defined relations between various forms of energy and
also various forms of energies have similar characteristics
for example: potential difference in electrical energy is
similar to temperature difference in case of heat energy .
We have other supporting examples like Kirchhoff's laws.
hence one may assume that "Since the restriction of
current flow in one direction is possible(diodes,
transistors), it may be also possible to restrict the heat
flow in one direction"

7.  The unidirectional heat flow concept sounds
very strange but there are possibilities to
accomplish this unlikely objective. Since all
energies are inter related it would be possible
to influence one form of energy very
effectively with any other. So electrical as well
as magnetic field can be used to alter the
nature of heat flow. In the series of
experiments associated with this project, the
influence of electrical field and more
importantly that of magnetic field will be
studied.

8. COST INCURRED
ITEM QUANTITY COST(Rs)
Bar magnets 4 280
Horseshoe magnets 2 300
Copper coils 2 kg. 1200
Magnetometer 1 2470
Compass 1 250
Miscellaneous 2000
TOTAL ESTIMATED COST 6500

9. EXPECTED RESULTS
 Control on heat flow using
magnetism.
 Unidirectional heat flow.
 Relationship between rate of heat
transfer and magnitude of magnetic
field.

10. FUTURE SCOPE OF THIS
PROJECT
 A sustainable system for thermal
management
 Development of various thermal
devices
 Memory circuits
 Improved efficiency of various thermal
devices
 Replacement for expensive semi-
conducting materials

11. APPLICATIONS
 Thermal switches
 Thermal diodes & Transistors
 Logic gates
 Memory circuits
 Thermal management

12. RELATED RESEARCHES

13. HEAT FLOW THROUGH
WATER DROPLETS

14. NEW PLASTIC CONDUCTS
HEAT BETTER THAN METALS,
BUT ONLY IN ONE DIRECTION.

15. SORET AND DUFOUR
EFFECTS.

16. PERISTALTIC TRANSPORT
OF A NEWTONIAN FLUID IN
A VERTICAL ANNULUS:
APPLICATION OF AN
ENDOSCOPE

17. EFFECT OF MAGNETIC FIELD
ON LAMINAR CONVECTIVE
HEAT TRANSFER OF
MAGNETITE NANOFLUIDS

18. CONCLUSION

19. QUERIES???

20. THANK YOU…