climate analysis by ecotect software.

1. JAISALMER
WEATHER ANALYSIS USING ECOTECT SOFTWARE
Suchetana Chakravarty
114AR0025
6th semester, NIT Rourkela

2. LOCATION DATA
location : Jaisalmer ,India
Latitude : 26.9 , longitude : 70.9
Altitude (meters above sea level): 242 meters
District JAISALMER has a very dry climate with very hot summer; a
cold winter and sparse rains.
The climate is extremely hot during summer with maximum
temperature reaching up to 49.2 degree Celsius and extremely cold
during winter with minimum temp. in the range of 1 degree Celsius.

3. SOLAR POSITION • Best orientation of the building is
south at 185 degree
• Worst orientation of the building
is east at 95 degree
solution
As Jaisalmer is has very high
temperature and high solar
radiation ,All the building should be
faced to south to avoid maximum
solar radiation.
• Sun shading device should be
provided

4. CREATE SUN SHADING DEVICE

5. DESIGN SOLUTION
•Dense clustering of buildings
•Sun control through orientation and structural projections
•Cooling of sunlit surfaces by using fins
•Massive construction for roofs and walls
•Courtyards and other air ducts for ventilation.
•major streets oriented to E-W and minor streets are right angle
to these.
• compact structure of the housing doesn’t allow the sun rays to
penetrate , and also serve as device of shading.

6. ANNUAL SOLAR RADIATION
• During April May June, the
building will get the minimum
solar radiation
• During winter month Dec ,jan,
Feb. it will get the maximum
heat which is necessary for
Jaisalmer .

7. COMFORT PERCENTAGE
ACCORDING TO ACTIVITY

8. DIRECT SOLAR RADIATION Direct solar radiation
is very high
Conclusion
Use of shading
devices to protect
from sunlight

9. PASSIVE SOLAR HEATING
• The activity level is affecting the solar heating
gained in the building
• The solar radiation is increasing if the glazing
ration of the building is high
solution
The solar radiation should not be high
inside the building so less glazing should
be used in Jaisalmer building

10. DIFFERENT TYPES OF COOLING
TECHNIQUES
Conclusion
30 -40DBT ventilation
evaporation is the best way
of cooling .
• In Jaisalmer use of jails
is the best for
ventilation.

11. DESIGN SOLUTION
1. Dense clustering of buildings.
2. Sun control through orientation and structural projections.
3. Cooling of sunlit surfaces by use of fins.
4. Massive construction for roofs and walls.
5. Courtyards and other air ducts for ventilation.
The effectiveness of each of these
cooling methods has been evaluated
by temperature observations and
this will be reported in a subsequent
paper.

12. WIND PATTERN THROUGH OUT THE
YEAR AT 9AM &3PM
Conclusion
Most of the wind comes
from south-west
direction.
Window at the south-
west side should be
bigger.

13. USE OF AIR DUCT
The picture shows the wind
circulation in the air duct of the
havelli, which is the method to keep
the haveli’s cool.
Articulated
façade of
haveli

14. SUMMER
WINTER
In summer high speed wind (415+/hrs) blows
from west-south at 220 degree.
In winter high speed wind comes from
north-east direction.

15. PREVAILING WINDS THROUGH OUT
THE YEAR DURING SUMMER
Conclusion
Through out the
year max.
prevailing wind
comes from south
west direction.
• The window
should be bigger
at the south
west side

16. PREVAILING WINDS
Prevailing winds
through out the year
• Rainfall is very less
• Avg. relative humidity
is also very low
• The temperature of
the wind is very high
• Hot wind flows from
the north-west side
Solution
Waterbody,
Courtyard inside
house which cools the
wind

17. COURTYARD IN JAISALMER
HOUSES

18. MONTHLY DIURNAL AVERAGES OF
TEMPERATURE
• Max temperature is in
the month of may ,june
•

19. TEMPERATURE
• Temperature in the month of June is the highest
which is near 45 degree centigrade
Conclusion
Crate a micro climate with help of water body which
can cool the building in hot summer
Hottest day

20. COLDEST DAY
Conclusion
• The coldest dy in Jaisalmer is near 5 degree.
• Which concludes high thermal insulation inside the building is
necessary
• Cavity wall can insulate the heat .

21. CLOUD COVER IN WINTER
Conclusion
Cloud cover is not much,
mainly bright and sunny
days are seen in jaisalmer

22. RELATIVE HUMIDITY
Humidity is very less
In the month of April, may
relative humidity is very less
Max. humidity is 100% during
month of July, august
Rainfall is very less
Conclusion
• Water saving bauli can be
made inside the house

23. DRY BULB TEMPERATURE IN
WINTER & SUMMER SEASON

24. WEAKLY DATA OF CLIMATIC
ELEMENTS

25. Thank you 