This presentation discusses trends in thermal engineering. It covers topics like combustion, heat and energy transfer, refrigeration, and thermoelectric energy. Specific applications discussed include using solar powered Stirling engines for industrial purposes, performance of biofuels as alternatives to present fuels, using nanofluids to enhance heat transfer in heat exchangers, the rise of magnetic refrigeration, and developments in exhaust systems and three-way catalytic converters. The presentation provides an introduction to thermal engineering and highlights areas of thermal/fluids science research like automotive engineering and developing more sustainable technologies.

1. A PRESANTATION ON
TRENDS IN THERMAL
ENGINEERING
BY
M.VENU,T.DHANANJAY
177R5A0311,177R5A0310.

2.  INTRODUCTION:
 Thermal engineering--is playing an increasingly
critical role in the development and successful
APPLICATION OF ADVANCED TECHNOLOGY in
virtually all fields. From space stations to
hazardous-waste destruction to high-speed
transport, from ozone-protecting refrigerants to
``NIGHT VISION`` goggles, a vast range of
technologies depend ON ENERGY MANAGEMENT,
HEAT-FLOW CONTROL, AND TEMPERATURE
CONTROL to successfully meet their design
objectives and attain commercial success. Meeting
the continually escalating demand for electricity
and ``cheap`` process that will remain a challenge

3. • Engineering and research these days have become
multi-disciplinary, application of thermal/fluids science
is in many areas
• Asignificant portion our thermal sciences research
applies to automotive engineering, with a strong focus
on developing new, more sustainable technologies.
Research topics include areas such as:
COMBUSTION
HEAT AND ENERGY TRANSFER
REFRIGERATION
THERMOELECTRIC ENERGY

4. 1.Application of solar powered stirling
engine in various industrial purposes:-

5.  WORKING:-
• The solar stirling engine operates with concentrated solar
power heat from the sun that is focused by the 9M solar
concentrator reflective mirrors.
• The solar stirling engine receiver has an external heat
exchanger that absorbs the incoming concentrating solar
power thermal energy.This heats then pressurizes the gas in
the heat exchanger, and this gas in turn powers the solar
stirling engine.
• The solar stirling engine operates with concentrated solar
power heat from the sun that is focused by the 9M solar
concentrator reflective mirrors.
• The solar stirling engine receiver has an external heat
exchanger that absorbs the incoming concentrating solar
power thermal energy.This heats then pressurizes the gas in
the heat exchanger, and this gas in turn powers the solar
stirling engine.

6. 2.Performance of bio fuels as an
alternative to present fuels in engines:-

7. Advanced biofuels are produced using unique
technologies and processes that transform a wide
range of plant, waste, and cellulosic molecules into
hydrocarbon molecules like those produced at
conventional refineries.like wise( this are advanced
biofuels in addition to the existing).
 Biodiesel—Ester
 Biogas
 Butanol
 Ethanol
 Ether ETBE
(Ethyl teritary butyl ether (ETBE))
 Renewable Crude Oil

8. 3.Application of nano fluids in heat
exchangers:-

9.  Nanofluid are solid-liquid composite materials has
the ability to TRANSFER HEAT across A SMALL
TEMPERATURE DIFFERENCE enhances the
efficiency of energy conversion & improves the
design of automobile engines, HT devices & micro-
electro-mech systems.
A Nanofluid is a fluid containing nanometer-sized
particles, called nanoparticles. These fluids are
engineered colloidal suspensions of nanoparticles
in a base fluid .

10. 4. Rise of magnetic refrigeration:-

11.  Although magnetocaloric cooling as a concept has been
around for many years, in 2006, GE began exploring the
technology for home refrigeration. A team of GE
researchers started from scratch to show the technology
could be applied to the real world of household
refrigeration and still work efficiently. After five years of
analysis and testing, they were able to achieve the desired
cooling effect.
 The system uses a water-based fluid rather than a
chemical refrigerant such as Freon to transfer heat from
inside the refrigerator and achieve the cooling process.
Instead of a compressor, magnets are used to create a
magnetic field that agitates particles in the fluid causing it
to cool. The strength of the magnetic fields determines
how cold the fluid becomes, and in turn, how quickly it

12. 5. Development of Exhaust system on 3-way Catalytic
converters:-
Three-way catalytic converter is a key part of exhaust
system. However, the research of the three-way catalytic
converter in China starts late. Now, there are about 20
catalytic agent manufacturing enterprises and scientific
research institutions in China. Major Chinese enterprises
that engage in the package of the three-way catalytic
converters are as follows: SHANGHAI DELPHI (now has
been acquired by Suzhou Umicore), DALIAN WALKER,
and TIANJIN CATARC, etc. Catalytic agent producers are
Wuxi Weifu Lida Catalytic Converter Co., Ltd Kunming
Institute of Precious Metals, BASF (Shanghai), Umicore
(Suzhou), Johnson Matthey (Shanghai), etc

13. ANY QURIES

14. THANK YOU