in brief study. after all we don't want to named it analysis.... :)

1. GROUP 05
01
Project Name: Residence of Tahsina Lipi
Studied unit: Ground floor
Address: Road no- 06, House no- 04,
Khorshed Nagar,
Gollamari, Khulna
BY:
130109 (Tamzid)
130110 (Anamika)
130126 (Noman)
Architecture discipline
Khulna university
03

2. 0505
01
03
Sr. no. Topic Page No.
1. Project Introduction 01
2. Site with surroundings 02
3. Functional Layout & Building orientation 03
4. Vegetation o4
5. Special Features 05
6. Sun Path 06
7. Shadow 07
8. Annual sun path with shadow range 08
9. Daylight &Sky conditions 09-15
10. Comparison 16
11. Solar radiation 17-20
12. Comparison 21
13. Wind flow & ventilation 22-26
14. Comparison 27
15. Driving Rain & Precipitation 28-30
16. Comparison 31
17. Overall comfortable scale 32
18. Overall comparison 33
19. Overall remarks 34
20. References 35
Content

3. STUDY ON CLIMATIC COMFORT IN BUILT ENVIRONMENTS
GROUP-05
PAGE: 05-01
Project introduction
• Longitude: 89.54 (east)
• Latitude: 22.80 (north)
• Altitude: 4m (13.12 feet)
• Climate narrative:
1. Situated in composite or monsoon
climatic zone.
2. Three seasons occur normally: Hot-Dry, Warm-Humid,
Cool-Dry.
3. Temperature remains between (10-43) deg.C all
around the year.
4. Average monthly rainfall 140mm and humidity up to
70%. Annual rainfall 1800mm.
site
01

4. STUDY ON CLIMATIC COMFORT IN BUILT ENVIRONMENTS PAGE: 05-01
Site with surroundings
Khorshed nagar main road
Site
Front road
Gollamari mor
02

5. STUDY ON CLIMATIC COMFORT IN BUILT ENVIRONMENTS
GROUP-05
PAGE: 05-01
Functional layout and building orientation
N
S
Living + dining
Bed-1 Bed-2
Kitchen
Veranda
Entry
Functional layout
Orientation
03
N

6. STUDY ON CLIMATIC COMFORT IN BUILT ENVIRONMENTS
GROUP-05
PAGE: 05-01
Vegetation
A
BB’
B
A’
B
AA’
Huge amount of vegetation in south
and east side of the building
04
N

7. STUDY ON CLIMATIC COMFORT IN BUILT ENVIRONMENTS
Special features
05
A pond on north-west side of
the building.
Teen shade houses on west and
north side of the building
Road on south side
A large drain just after the front
road of the building.

8. STUDY ON CLIMATIC COMFORT IN BUILT ENVIRONMENTS
Sun path
June, 21
September, 21
December, 21
9am 12pm 4pm
06

9. STUDY ON CLIMATIC COMFORT IN BUILT ENVIRONMENTS
Shadow
June, 21
September, 21
December, 21
9am 12pm 4pm
07

10. STUDY ON CLIMATIC COMFORT IN BUILT ENVIRONMENTS
Annual Sun path with shadow range
Annual sun path
Daily sun path
Shadow range
(December 7am-5pm)
Shadow range
(June 9am-5pm)
08

11. STUDY ON CLIMATIC COMFORT IN BUILT ENVIRONMENTS
Day light and sky conditions (Bed-2: 4pm)
June 21
September 21
December 21
False color ISO
09
N

12. STUDY ON CLIMATIC COMFORT IN BUILT ENVIRONMENTS
Day light and sky conditions (Bed-2: 9am)
June 21
September 21
December 21
False color ISO
10
N

13. STUDY ON CLIMATIC COMFORT IN BUILT ENVIRONMENTS
Day light and sky conditions (Living: 9am)
June 21
September 21
December 21
False color ISO
11
N

14. STUDY ON CLIMATIC COMFORT IN BUILT ENVIRONMENTS
Day light and sky conditions (Dining:4pm)
June 21
September 21
December 21
False color ISO
12
N

15. STUDY ON CLIMATIC COMFORT IN BUILT ENVIRONMENTS
Day light and sky conditions (kitchen: 4pm)
June 21
September 21
December 21
False color ISO
13
N

16. STUDY ON CLIMATIC COMFORT IN BUILT ENVIRONMENTS
Day light and sky conditions
False color ISO
9am, June
5pm, June
12pm, June
14

17. STUDY ON CLIMATIC COMFORT IN BUILT ENVIRONMENTS
Day light and sky conditions
False color ISO
9am, December
5pm, December
12pm, December
15

18. STUDY ON CLIMATIC COMFORT IN BUILT ENVIRONMENTS
Comparison
Study Mahoney recommendations User feedback
× Orientation: north and
south (long axis east-west)
× Open spacing for breeze
penetration, but protection
from hot and cold wind
 Large openings, 40-80%
× Protection from heavy rain
necessary- Sun shade.
Neutral
More comfortable
Uncomfortable
More uncomfortable
Comfortable
16
Remarks:
•Study output and user feedback almost same.
•A little difference in bed-2 (north-east) because user placed a wardrobe in
front of the east window.
Reference no: 01, 02, 15 (Velux)

19. STUDY ON CLIMATIC COMFORT IN BUILT ENVIRONMENTS
Solar radiation
Total radiation
Solar exposure
Temperature
17

20. STUDY ON CLIMATIC COMFORT IN BUILT ENVIRONMENTS
Solar radiation
Solar heat gain calculation method:
H= Q x Cp x ρ x ∆T
H= Heat gain/Loss by indoor elements
Cp= Specific heat of air, 1000 J/kg o
C
ρ = Density of air, 1.2 kg/m3
∆T = Indoor temp. – Outdoor temp.
Q= Rate of ventilation air flow m3
/sec
Q = K x A x V
K= Coefficient of effectiveness
For wind impending at a 45° angle of incidence roughly K= 0.4
For wind impending at a 90° angle of incidence roughly K= 0.8
A= Area of Opening in m2
(Smaller between inlet and outlet)
V = Outdoor wind velocity impending on that window in m/sec.
18

21. STUDY ON CLIMATIC COMFORT IN BUILT ENVIRONMENTS
Solar heat gain
Summer
Living + dinning : Q= 0.4*3.25*0.7= 0.91
H= 0.91*1000*1.2*(-3)
= -3276 J
Bed room-1 : Q= 0.4*1.63*0.28= 0.18256
H= 0.18256*1000*1.2*(-4)
= -876.288 J
Bed room-2 : Q= 0.4*2.32*0.7= 0.6496
H= 0.6496*1000*1.2*(-3)
= -779.52 J
Kitchen : Q= 0.8*1.3*0.28= 0.2912
H= 0.2912*1000*1.2*(-3)
= -1397 J
Winter
Living + dinning : Q= 0.4*3.25*0.2= 0.26
H= 0.26*1000*1.2*1
= 312 J
Bed room-1 : Q= 0.4*1.63*0..5= 0.326
H= 0.326*1000*1.2*3
= 1173.6 J
Bed room-2 : Q= 0.4*2.32*0.5= 0.464
H= 0.464*1000*1.2*2
= 1113.6 J
Kitchen : Q= 0.4*1.3*0.5= 0.26
H= 0.26*1000*1.2*5
= 1560 J
19

22. STUDY ON CLIMATIC COMFORT IN BUILT ENVIRONMENTS
Solar radiation
User
feedback
Winter AnnualSummer
Study
Neutral
More comfortable
Uncomfortable
More uncomfortable
Comfortable
20

23. STUDY ON CLIMATIC COMFORT IN BUILT ENVIRONMENTS
Comparison
Study Mahoney recommendations User feedback
 Light, insulated roofs
 Light walls short time lags
 Large openings, 40-80%
× Rooms single banked,
permanent provision for
air movement
Neutral
More comfortable
Uncomfortable
More uncomfortable
Comfortable
21
Remarks:
•A huge difference between study output and user feedback because of
vegetation (south and east), special features and air movement around the
building.
Reference no: 03, 04, 15 (Ecotect)

24. STUDY ON CLIMATIC COMFORT IN BUILT ENVIRONMENTS
Wind flow and ventilation
Individual month rose diagram
Annual
average
rose
diagram
22

25. STUDY ON CLIMATIC COMFORT IN BUILT ENVIRONMENTS
Wind flow and ventilation pattern (General)
23

26. STUDY ON CLIMATIC COMFORT IN BUILT ENVIRONMENTS
Wind flow and ventilation
WinterSummer N
Living + dining
Kitchen
Living + dining
Kitchen
Bed-1 Bed-2Bed-1
Bed-2
24

27. STUDY ON CLIMATIC COMFORT IN BUILT ENVIRONMENTS
Wind flow and ventilation
25

28. STUDY ON CLIMATIC COMFORT IN BUILT ENVIRONMENTS
Wind flow and ventilation
Summer
Living + dinning : Q= K*A*V
= 0.4*3.25*0.7= 0.91 m /s
Bed room-1 : Q= K*A*V
= 0.4*1.63*0.28= 0.18256 m /s
Bed room-2 : Q= K*A*V
= 0.4*2.32*0.7= 0.6496 m /s
Kitchen : Q= K*A*V
= 0.8*1.3*0.28= 0.2912 m /s
Winter
Living + dinning : Q= K*A*V
= 0.4*3.25*0.2= 0.26 m /s
Bed room-1 : Q= K*A*V
= 0.4*1.63*0..5= 0.326 m /s
Bed room-2 : Q= K*A*V
= 0.4*2.32*0.5= 0.464 m /s
Kitchen : Q= K*A*V
= 0.4*1.3*0.5= 0.26 m /s
3
3
3
3
3
3
3
3
Simulation result: for individual room
Detail process: on solar heat gain chapter
26

29. STUDY ON CLIMATIC COMFORT IN BUILT ENVIRONMENTS
Comparison
Study Mahoney recommendations User feedback
× Rooms single banked,
permanent provision for
air movement
 Large openings, 40-80%
× Orientation north and
south (long axis east-west)
× Open spacing for breeze
penetration, but
protection from hot and
cold wind
Neutral
More comfortable
Uncomfortable
More uncomfortable
Comfortable
27
Remarks:
•Study output and user feedback Almost Same.
•Only a considerable difference in bed-1 (north-west) Because of using
curtain , heat gain is reduced artificially by user for better comfort.
•As a teen shade house in north and north-west side reflects solar heat, local
wind flows the heat into the room, so users feel comfortable.
Reference no: 03

30. STUDY ON CLIMATIC COMFORT IN BUILT ENVIRONMENTS
Driving rain and precipitation
Plan 1’
Kitchen
28
N

31. STUDY ON CLIMATIC COMFORT IN BUILT ENVIRONMENTS
Driving rain and precipitation
Plan
Plan
6”
6” 1’
Bed-1
Bed-2
29
N

32. STUDY ON CLIMATIC COMFORT IN BUILT ENVIRONMENTS
Driving rain and precipitation
Plan
1’1’6” Living
30
N

33. STUDY ON CLIMATIC COMFORT IN BUILT ENVIRONMENTS
Comparison
Mahoney recommendations User feedback
×Protection from heavy rain
necessary
Neutral
More comfortable
Uncomfortable
More uncomfortable
Comfortable
31
Remarks:
•As there is no protection from rain, a little amount of rain is enough to
make discomfort to user.

34. Overall comfortable scale
Summer Winter AnnualStudy
User feedback
Neutral
More comfortableUncomfortable
More uncomfortable Comfortable
32Reference no: 10

35. STUDY ON CLIMATIC COMFORT IN BUILT ENVIRONMENTS
Overall Comparison
Study Mahoney recommendations User feedback
× Orientation north and
south (long axis east-west)
× Open spacing for breeze
penetration, but
protection from hot and
cold wind
× Rooms single banked,
permanent provision for
air movement
 Large openings, 40-80%
 Light walls short time lags
 Light, insulated roofs
× Protection from heavy rain
necessary Neutral
More comfortable
Uncomfortable
More uncomfortable
Comfortable
33

36. STUDY ON CLIMATIC COMFORT IN BUILT ENVIRONMENTS
Overall remarks
34
• Building layout should be north-south exposure, but here the layout is square because of site layout.
• As there is no protection from rain, a little amount of rain is enough to make discomfort to user.
• While placing wardrobe in front of window (bed-2) provides artificial obstacle to daylight.
• Because of using curtain , heat gain is reduced artificially by user for better comfort.
• As a teen shade house in north and north-west side reflects solar heat, local wind flows the heat into the
room, so users feel comfortable.
• A huge difference between study output and user feedback because of vegetation (south and east), special
features and air movement around the building.
• Whole infrastructure of built form may consider Mahoney chart or not, users make it comfortable by
their own way.

37. STUDY ON CLIMATIC COMFORT IN BUILT ENVIRONMENTS
References
1. http://suncalc.net/#/22.802,89.5425,16/2015.12.21/16:58
2. http://www.sunearthtools.com/dp/tools/pos_sun.php
3. http://www.weatheronline.co.uk/Bangladesh/Khulna.htm
4. http://www.weatheronline.co.uk/weather/maps/current?LANG=en&CONT=ukuk
5. http://sustainabilityworkshop.autodesk.com/sites/default/files/styles/large/public/core-page-
inserted-images/climate_windrose-underlay_vasari.jpg
6. http://sustainabilityworkshop.autodesk.com/buildings/ecotect-vasari-climate-analysis
7. http://www.autodesk.com/education/home
8. https://www2.buildinggreen.com/climate-analysis-webcast
9. https://www.ntnu.no/documents/10310/32999357/AAR4832-
4532+course+presentation.pdf/bf653cf1-5a7d-434e-ac7a-e8f43d295053
10. http://sustainabilityworkshop.autodesk.com/buildings/human-thermal-comfort
11. http://www.slideshare.net/search/slideshow?
searchfrom=header&q=climatic+analysis+of+a+building&ud=any&ft=all&lang=en&sort
12. Wikipedia
13. Manual of tropical housing and building – koenigsberg, Ingersoll, mayhew, szokolay
14. Climate and build form- NTNU master of science programme.
15. Software- auto cad, sketch up, Revit, ecotect, Velux.
35