ppt

1. SWAMI KESHVANAND INSTITUTE OF TECHNOLOGY, JAIPUR
Rajasthan Technical University, Kota
Submitted to:-
Electrical Dept.
Submitted By:-
Mr. Yuvraj Singh
VII(A)
Roll No.:-14ESKEE014
Earth Air Tunnel Heat Exchanger
(EATHE)

2. Contents
• Introduction
• Renewable Energy
• Importance of renewable energy
• Earth air tunnel
• Advantages
• Disadvantages
• Impacts on environment and our country
• Conclusion
• References

3. Introduction Of EATHE
 Efficiency of Renewable energy
One of the most important global
challenges
 EATHE
Advantages
Disadvantages
 Effects on environment
Development of country
Society

4. Renewable Energy
Renewable energy is generated from natural from natural
resources-such as sunlight, wind, rain, tides and geothermal
heat-which are renewable(naturally replenished).
Renewable energy technologies range from solar power, wind
power, biomass and biofuels for transportation.
Alternative energy is a term used for an energy source that is an
alternative to using fossil fuels.
This energy cannot be exhausted and is constantly renewed.
These are the energies with low environmental impact.

5. Importance of Renewable Energy
 Renewable energy is reliable and plentiful
and will potentially be very cheap once
technology and infrastructure improve.
 Renewable energy produces only minute
levels of carbon emissions and therefore helps
combat climate change caused by fossil fuel
change.
 Boost to economy in form of new jobs.
 Less foreign oil import and other things.
 Renewable energy can help in electrification
of many rural areas in developing world.

6. Earth Air Tunnel
 This is a technique essentially used for cooling the air in
hot and dry climates, it can be used for winter heating .

7. • Earth acts a source or sink
• High thermal Inertia of soil
results in air temperature
fluctuations being dampened
deeper in the ground
• Utilizes Solar Energy
accumulated in the soil
• Cooling/Heating takes place due
to a temperature difference
between the soil and the air
Earth Air Tunnel Principle

8. EAT’s can be used in a vast variety of buildings:
• Commercial Buildings: Offices, showrooms, cinema
halls etc.
• Residential
• Buildings
• University
• Greenhouses
• Hospitals
Application of EAT’s

9. Advantages
• ETHE based systems cause no toxic emission and therefore, are
not detrimental to environment
• Ground Source Heat Pumps do use some refrigerant but
much less than the conventional system.

10. • ETHE based systems for cooling do not need water-a feature
valuable in arid areas like Kutch. It is this feature that
motivated our work on ETHE development.
Contd...
• ETHEs have long life and require only low maintenance with
low operating cost.

11. Limitation
• Require large space to make setup.
• Give a limited cooling effect.
• Initial cost high.

12. Impacts on Environment and Our Country

13. ISSUE
• Condensation inside the
tubes has been
observed
• Condensation occurs if
temp. in the tube is
lower that dew point
temp.
• Condensation occurs in
systems with low
airflow and high ambient
dew point temperature
• Water in tubes also
results in growth of
mould or mildew
leading to IAQ issues
SOLUTIONS
• Good construction
and drainage
• Tubes are tilted to
prevent water from
standing in the tubes
• In the service pit at the
lowest point water can
be captured and pumped
• Water tight tubes can be
used to prevent ground
water from entering
into the system
Potential Issue

14. • Saving environment from pollution.
• Ozone layer depletion can be controlled.
• Economic growth will increase.
• Improvement of standard of life.
• ETHE should be used in efficient way.
• Temperature of earth will decrease.
Conclusion

15. homeguides.sfgate.com
extension.psu.edu
new-learn.info
Earth air heat exchangers in parallel connection
manojkumardubey1 , dr. J.L.Bhagoria2, dr. Atullanjewar
M.Tech student1 MANIT bhopal professor mech deptt.
A passive solar system for thermal comfort conditioning of
buildings in composite climatest , 1 p. RAMAM , SANJAY
MANDE and V.V.N. KISHORE RECEIVED 19 AUGUST
1998
References

17. 17