International Journal of Engineering Trends and Technology (IJETT) - Volume4Issue4- April 2013
Indoor Air Quality
Korlakunta Divya #1, M.Anil Kumar *2
#
Department of Electronics and Communication Engineering, K L University
Vaddeswaram, Guntur, AP, India
*
Asst Professor
Department of Electrical and Electronics Engineering, K L University
Vaddeswaram, Guntur, AP, India
Abstract-
The main aim of our project is to
workplaces has a top priority.
maintain the indoor air quality.The analysis is
done
on
different
parameters
like
temperature,relativehumidity,CO2,lights,sens
ors and air conditioners to maintain the
indoor environment.
This
report
provides
overview
on
importance of indoor air quality in an office
or any other closed structure. It also discusses
about the effects of poor indoor air quality,
the various factors that affect the indoor air
quality and various methods to assess indoor
air quality at a workplace or any building.
On performing the analysis ,better
indoor environment can be maintained.
Continuously the data from the sensor is
monitored by performing the data analysis,
figuring out the reasons for the improper
maintenance and finding out the remedy for
the proper maintainance.So to maintain the
II.
CO2 ANALYSIS
Procedure followed for calculating of
CO2 released by an individual in the
given area:
1.Count the number of persons present
in the room
2..Readings of the CO2 levels are
taken from the reports
3.Analysis is done for those readings
4.We caluclated the volume of the room
5.Then the readings in the room when
trainees are present are taken.
6.Compared those readings with the
readings of that are taken from previous
data when only employees are present
7.By taking all above considerations we
caluclated the amount of CO2 released
by each person per second.
perfect temperatures AC should always be in
the on condition.
Keywords:co2,led ,indoor air, air conditioner
I.
INTRODUCTION
A term which refers to the air
quality within and around buildings and
other closed structures.It relates to the
health and comfort of building
occupants.People spend about 90% of
their working time indoors(in a factory,
office etc.).So maintaining adequate
indoor air quality (IAQ) in buildings and
ISSN: 2231-5381
Conclusion for the above experiment:
- According to the analysis done
20ppm of CO2 is released by each
person.By this CO2 levels in the indoor
atmosphere was observed.
III. LED LIGHT
LED lights are Eco-friendly and
highly efficient sources of light that
last longer, use less electricity and
produce less heat than traditional light
bulbs
like
incandescents,
and
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International Journal of Engineering Trends and Technology (IJETT) - Volume4Issue4- April 2013
fluorescent lights.
Advantages:
-Long life time and High efficacy
-No UV light , 100% glare Free ,
No eye strain
-High Power saving compared to any
other lights ( 40 - 80 )% depending on
usage.
On different studies the conclusions are:
Unlike the visual system where
the impact of light is immediate and
obvious, the effect of light on the
circadian system has a
long time constant and is a relatively
recent area of study.
Although many of the effects of light as
radiation on human health are well
established, the extent to which they
occur in buildings is limited. . The one
common form of lighting where light as
radiation has been identified as a hazard
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is the task light
The
negative
mood
was
altered—differentiated across age group
but not across gender.
The younger participants were
shown to preserve the negative mood
best in the warm (more reddish) and
least well in the cool(more bluish) white
lighting and reverse effect for older
participants.
The older males were shown to
preserve the positive mood better than
the older females did independent of the
word list, females performed better than
males
The room light evaluation showed
that, irrespective of the type of lamp,the
older participants evaluated the room
light as less bright and less cool than did
their younger counterparts.the results
supported the notion that indoor lighting
can
convey
different
emotional
meanings.
Perceived control has a strong
basis in the psychological literature.
Attention is popularly thought to be a
function of luminance distributions.
Environmental appraisal and affect are
interconnected theories Nonuniformity
does not degrade visual performance and
is acceptable and preferable.
For Good lighting quality: depends on
the lighting systems available (including
daylighting), energy-use considerations,
and the budget
Conclusion for above experiment:
LED lights have given better results
than fluorescent or incandescent lights.
IV.
AIR CONDITIONERS
Air conditioners also play a major role
to maintain indoor air quality
comfortably so that the production in the
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International Journal of Engineering Trends and Technology (IJETT) - Volume4Issue4- April 2013
offices may be increased and maintains
the healthiness of people.
Reduction of AC’s burden:
As the air conditioners provide best
indoor air quality it will also have large
effect on power consumption.so to
reduce the burden on AC’s different
experiments have been done like placing
green net on the roof and the other is to
sprinkle water on the compressors and
pouring the water on the roof top .These
may give best results .
Conclusion of the above experiment:
The best result was obtained when
water
has
been
sprinkled
on
compressors.
V.
Working:
As with all air conditioning systems
the principle remains the same whereby
the heat is removed from one area and
replaced with chilled dry air and the hot
air is expelled, normally to the outside
atmosphere. As you can see from this
typical example of a air conditioning
system, the ambient air is drawn over
the condenser that can best described as
a ‘radiator’ as seen on motor vehicles
but instead of water running through the
system it contains a refrigerant gas.
On its journey around the system it has
three main stages; the evaporator
contains the sub-cooled refrigerant and
air blows through its veins to release the
chilled dry air into the room, the
condenser contains the high temperature
gas that once again air is blown
through the veins collecting the heat as it
passes through and this is then expelled
outside.
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CONCLUSION
Finally it was concluded that indoor air
quality must be maintained so that their
will be no health effects and good
productivity may be achieved.this is
possible by all the above methods like
Co2 maintainance,usage of LED lights
and Air conditioners.
REFERENCES
1.
Indoor air quality by John D springler
2.
www.epa.gov/iaq/ia-intro.htm
3.
Indoor environment by jonathan M.samet
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