Devap is a combination of desiccant and evaporative cooling.

1. Desiccant-Enhanced Evaporative
Air-Conditioning
(DEVAP)
PPT BY-
SATYA AYYALASOMAYAJULA

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The desiccant enhanced evaporative air conditioner
(DEVAP) is a combination of the liquid desiccant and
evaporative cooling technologies into an innovative cooling
core.
The energy input is largely switched away from electricity to
low-grade thermal energy that can be sourced from fuels such
as natural gas, waste heat, solar or biofuels.
ABSTRACT

3. The Problem
Changing
Climate
Increase in
chlorofluorocarbons.
Electricity
High cost and low
sources
Global warming and
increase of others
pollutants.
New
Terrain
Natural coolants are
reduced
exponentially from
past years
Industrial
Impact
Due to
industrialization we
need air conditioning
every where.
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High
Temperature

4. The Solution
Clean
Solution should be
clean
Evergreen
Foliage
It should promote
green
Healthy
Environment
Climate should not
be affected
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5. INTRODUCTION
The desiccant-enhanced evaporative (DEVAP) air
conditioner — developed by the National Renewable
Energy Laboratory (NREL), AIL Research, and Synapse
Product Development LLC — combines desiccant-based
dehumidification with indirect evaporative cooling to
reduce cooling energy use by as much as 81 percent.
 According to NREL, the DEVAP air conditioner is
capable of providing superior comfort for commercial
buildings in any climate at a fraction of the electricity
costs of conventional air conditioning equipment,
releasing far less carbon dioxide and cutting costly peak
electrical demand.
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.
 Water is already used as a refrigerant in evaporative coolers, a common and widely used energy-saving
technology for arid regions. The technology cools incoming hot, dry air by evaporating water into it.
 The energy absorbed by the water as it evaporates, known as the latent heat of vaporization, cools the
air while humidifying it.
 However, evaporative coolers only function when the air is dry, and they deliver humid air that can lower
the comfort level for building occupants.

7. 7ADD A FOOTER

8. Devap
MAIN BENEFIT
Other benefits
include
No noise
Low cost
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 The process blends the benefits of desiccant coolers
and evaporative coolers to produce conditioned air
more efficiently than ever.
 Air goes through a liquid desiccant cycle to remove
humidity from the air, drying it out, the air then goes
through an evaporative cooler to supply dry and cool
air; lowering the worry of adding too much humidity
for those living in humid environments.

The desiccant is regenerated using waste heat so the
only energy requirement is when dehumidifying. No
coolant required.
 DEVAP becoming a popular choice because of the
likely savings in energy costs. These are key because
air conditioning currently consumes about 15% of the
electricity generated in the United States and is a
major contributor to peak electrical demand on hot
summer days.
CONCLUSION

11. THANK YOU