solar air conditioning
TRANSCRIPT
2016-2017
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GUIDED BY-AR. MOHD FIROZ ANWAR PRESENTED BY-SHEHZAD1.
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Air-conditioning is one of the major
consumers of electrical energy .
The demand can be expected to
increase because of changing working
times, increased comfort expectations
and global warming.
Solar air-conditioning might be a way
to reduce the demand for electricity
2016-2017
M.ARCH 1st
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GUIDED BY-AR. MOHD FIROZ ANWAR PRESENTED BY-SHEHZAD2.
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Process of converting solar
thermal energy (heat) into
conditioned air.
Eco-friendly as well as
Energy-efficient.
Can be operated with
green resources of heat as
backup resources when
solar radiation is
unavailable
• When a liquid/gas changes its
state, it takes or extract heat.
• At lower pressure, state changes
at lower temp.
• Extraction of heat means cooling.
• Gas gets compressed when heated.
• Gaseous refrigerant compressed and
then heated up in the solar panel up
to 90°C.
2016-2017
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GUIDED BY-AR. MOHD FIROZ ANWAR PRESENTED BY-SHEHZAD3.
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2016-2017
M.ARCH 1st
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GUIDED BY-AR. MOHD FIROZ ANWAR PRESENTED BY-SHEHZAD4.
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Solar closed-loop vapour
absorption Air Conditioning
Schematic layout of the system
In this system , water is used
as the refrigerant while
lithium bromide (Li
Br)/ammonia is used as the
absorbent.
In the absorber, the lithium
bromide absorbs the water
refrigerant, creating a
solution of water and lithium
bromide.
Lithium bromide has great
affinity for water vapour,
however, when the water-
lithium bromide solution is
formed, they are not
completely soluble with each
other
GUIDED BY-AR. MOHD FIROZ ANWAR PRESENTED BY-SHEHZAD
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2016-2017
M.ARCH 1st
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GUIDED BY-AR. MOHD FIROZ ANWAR PRESENTED BY-SHEHZAD
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2016-2017
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• The angle and direction of installation
will effect the efficiency of the solar
collector.
• As a general rule if you are in the
Northern Hemisphere then the collector
should face South.
• The angle at which you mount the
collector should roughly correspond to
the latitude of your location. For
example:
- London, UK has a latitude of 51° North -
the collector should therefore face south at a
51° angle.
- Rome, Italy has a latitude of 41° North -
the collector should face south at a 41°C
angle
2016-2017
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REFRIGERA
TION
13%
LIGHTING
28%
TELEVISIO
N
4%
OTHERS
10%
AIR
CONDITIONING
7%
FAN
34%
EVAPORATI
VE COOLER
4%
ELECTRICITY DISTRIBUTION IN
RESIDENTIAL BUILDING
LIGHTING
25%
INTERNAL
LOADS
15%
OTHERS
5%
AIR
CONDITIONING
55%
ELECTRICITY DISTRIBUTION IN
COMMERCIAL BUILDING
• Approx. 50% of total electricity is used in H.V.A.C in both the residential as well as commercial
buildings.
• By reducing in electrical load by 50% , it can cut 150 million tonnes of CO2 by 2030.
Source: Bureau of Energy Efficiency
2016-2017
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GUIDED BY-AR. MOHD FIROZ ANWAR PRESENTED BY-SHEHZAD8. SO
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Eco-Friendly Economic-saving Low Maintenance Energy-efficient
Government subsidy
2016-2017
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Lack of Efficiency in
Monsoon season
Heavy Initial Investment Long payback period Large area requirement.
• Solar PV Air Conditioner
1.5 ton (1.5kw) Price: Rs.
1.5- 3.5 lakh.
• Approx. 3-7 times of
conventional A.C unit.
• It take 15-20 years to
payback the complete
investment.
• For generating 1Kw, it
requires 12 sq.m of roof
area.
• For setting up a solar
power plant of 1MW, it
require 5 acres of land.
• Efficiency lacks if cloudy
weather prolongs as
intensity of sunlight don’t
match the requirement of
solar panel.
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• National Institute of Solar Energy, an autonomous
institution of Ministry of New and Renewable
Energy (MNRE).
• Established by MNRE in September 2013.
• Located on Gurgaon-Faridabad road, about 8 km
from central Gurgaon.
• Has facility for performing research experiments
related to solar energy e.g. solar air conditioning,
solar power generators, solar heaters etc.
2016-2017
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100 kW Solar Thermal Vapor Absorption Cooling System
• Heat source : Hot water from solar collectors
• Hot water temperature : 210°C• Cooling capacity : 100 kW
• Chilled water Temperature: 12 / 7 Deg C.
• COP of cooling system : 1.7
• Thermal storage : Chilled water / Hot water
Solar heat collectors Heat exchangers
2016-2017
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2016-2017
M.ARCH 1st
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GUIDED BY-AR. MOHD FIROZ ANWAR PRESENTED BY-SHEHZAD14.
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Case 3:58kW
Case 2:70kW
Case 1 :100kW
Case 1 : No StorageCase 2: Hot StorageCase 3 : Hot & cold Storage
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• Operating Temperature: 170oC
• Collector Area : 31 m2
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Special Feature
Evacuate Flat Plate
Collector as heat source
Works on absorption
principle
Double Effect
Air Cool Condenser
Domestic application
2016-2017
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2016-2017
M.ARCH 1st
SEM
GUIDED BY-AR. MOHD FIROZ ANWAR PRESENTED BY-18.
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