EXHAUST POWERED AUTOMOBILE AIR-CONDITIONER
In
today’s world, the rising oil prices is a matter that is really bothersome for
all the automobile manufacturers and as well as to the end users. The fuel
reserves are also fast depleting and we’re left with no means to replenish this
highly precious driving force that powers each and every sphere of life either
directly or otherwise. It is indeed perturbing that today’s trend of fuel
consumption when extrapolated says that all these would last only for a few
decades. Because of fast depleting fossil fuel resources and environment one
way to secure our future is to use our resources as economically as possible.
The project titled “Exhaust powered
automobile air conditioning” deals with the efficient way of running the ac
compressor of the automobile with the aid of the exhaust gas. This project
works on the theme of turbocharger in which a low pressure high speed turbine
is placed in the exhaust gas manifold. The exhaust gas from the engine is made
to rotate the turbine where the thermal power of exhaust gas is converted into
rotary motion through turbine. This rotary motion from turbine is given to the
turbocharger compressor which compresses the refrigerant vapor. So through
this air conditioning effect is obtained without loss of any crankshaft
power.
Generally by using ac in vehicle
there is considerable drop of mileage of the vehicle. But by applying this
principle there is no drop of mileage. Moreover the fuel is used more
efficiently and economically. The crankshaft power is saved and this power is
used in increasing the power of the vehicle. Owing to lesser fuel intake, the
exhaust emissions will also be considerably reduced thereby avoiding much of
unburnt hydrocarbons let out into the air. Thus by implementing this project we
can ensure better fuel and environmental conditions.
NEED FOR THIS PROJECTS
Our prime aim is to increase the
mileage of vehicles especially petrol engine vehicles. By this we can save fuel
economy from 15 to 20% and also we are conserving the waste exhaust power in a
best way using turbocharger. Because 45% of the fuel energy is wasted through
waste exhaust gas.
And
also we need to equalize the performance of both air conditioned and non air
conditioned(A/C & non A/C )
vehicles. We reduce the the exhaust pollution (NOx,SOx etc...) since there is
no utilisation of fuel for Air Conditioning.
MAIN THEME
As we know that in a turbocharger,
the exhaust gas strikes the turbine (low pressure high speed turbine) and makes
it to rotate the shaft. At the other end of shaft an impeller is mounted within
the casing which compresses the atmospheric air to engine inlet, which
increases the 35% of engine power(boost power).It compresses the air and gives
boost pressure of 40psi.Since the type bearing used is Anti-friction bearing
with negligible friction losses and also the type of coupling used is fluid
coupling so there is a good power transmission with very high speed ranging
from 30,000 to 90,000 RPM.
Likewise
, Our innovative idea is about the application of this turbocharger compressor
instead of A/C compressor in automobiles. so that we have made the A/C
compressor to run just by using exhaust gas.
