climatic issues

GROUP

0505

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Project Name: Residence of Kazi Wahiduzzaman

Address: ROAD 19, HOUSE 125/,NIRALA R/A, KHULNA

Submitted by:130121-NUSRAT JAHAN BARSHA

130136-TAHIA TASNIAKHULNA UNIVERSITY, KHULNA,

BANGLADESH.ARCHITECTURE

2ND YEAR 2ND TERM

STUDY ON CLIMATIC COMFORT IN BUILT ENVIRONMENTS

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Index

Serial No Topic Page

01 Project information 1

02 Project Location 2

03 Site 3

03 Functional Layout 4-5

02 vegetation 6

05 Special feature 7

06 Sun Path (with shade shadow) 8-9

07 Solar heat gain 10-17

08 Sky condition & Natural light 18-27

09 Wind flow and ventilation 28-32

10 Precipitation and Driving rain 33-36

11 Comparison with Mahoney table 37

12 Summary of analysis 38

13 Conclusion 39

14 References 40


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PAGE: 01

Project Information

• OWNER: KAZI WAHIDUZZAMAN• ADDRESS: ROAD 19, HOUSE 125/,NIRALA R/A, KHULNA • TYPE: RESIDENTIAL• SITE AREA: 3581SQFT• BUILDING AREA: 1061SQFT• DESCRIPTION: 2 STORY HIGH• ROAD ON FRONT(NORTH)SIDE ONLY (2 BED ROOMS 2 TOILETS 1 VARANDA, KITCHEN, DINING, FOYER)


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PAGE: 02

Project Location• Longitude: 22~47’59.2”N

• Latitude: 89~33’04.7”E

• 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’ Call around the year.4. average monthly rainfall 140mm and humidity up to 70%.

Ref:google map view


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PAGE: 03

Site Plan

Site


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PAGE: 04

Functional layout and orientation

THIS BUILDING IS NORTH-SOUTH ORIENTED

v

NORTH

SOUTH

BEDROOM-2BEDROOM-1

DININGTOILET

TOILET

KITCHEN

VARENDA


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PAGE: 05

Functional Layout Zoning

BEDROOMBEDROOM

DINING

VARENDA

SERVE AREA

CIRCULATION AREA

SERVICE AREA

TOILET

TOILET

KITCHEN


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PAGE: 06

Vegetation

• Big amount of vegetation in south and east side of

the building


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PAGE: 07

Special Feature

THERE IS A DRAIN BESIDE THE BUILDING. IT EFFECTS THE FRESH AIR.

THERE IS A ROAD IN NORTH AND WEST SIDE. IT HAMPERS PRIVACY.


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PAGE: 08

Sun Path(With Shade Shadow)

9:00 am 3:00 PM12:00 pm

June

December

Ref: Autodesk Revit Site Plan


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PAGE: 09


9:00 am 3:00 PM12:00 pmJune

December

Ref: Sun calc


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PAGE: 10

Sun Path(With Annual Shade Shadow)

Annual shadow range(9am -3pm)

Ref: Eco Tech


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PAGE: 11


Ref: Eco Tech


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PAGE: 12

Solar Radiation

Ref: Eco Tech


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PAGE: 13

Solar Heat Gain

Solar Heat Gain Yearly Chart


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PAGE: 14

Solar Heat Gain

uncomfortable

More tolerable

Tolerable

Less tolerable

Comfortable

In Summer In Winter

User Response

BEDROOMBEDROOM

DINING

VARENDA

TOILET

TOILET

KITCHEN

BEDROOMBEDROOM

DINING

VARENDA

TOILET

TOILET

KITCHEN


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PAGE: 15

Solar Heat Gain

uncomfortable

More tolerable

Tolerable

Less tolerable

ComfortableAnnual Analysis

BEDROOMBEDROOM

DINING

VARENDA

TOILET

TOILET

KITCHEN


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PAGE: 16

Summary of Analysis(Solar Heat Gain)

We use ECOTECT for measuring SOLAR RADIATION.

Beside ECOTECT gives us a unit of W/m2. So every m2 we gate different value of SOLAR RADIATION.

But here we consider a single room as a single value of radiation by user response, analysis and Mahoney table

From analysis we come to that bed room 2 is more comfortable than bed room 1`Veranda is always tolerable

Toilet 1 is more tolerable then toilet 2.


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PAGE: 17

Solar Heat Gain(Comparison with Mahoney Table)

Functions Most Desirable

Desirable Less Desirable

Worst In our Project

Remark

Bedroom1 S &S-E N-E S-W NW/W N-W WORST

Bedroom 2 S &S-E N-E S-W NW/W N-E DESIRABLE

Dining S &S-E S-W&N-E N-W W W WORST

Kitchen N&W N-W&E S-W&N-E S&S-E N-E LESSDESIRABLE

Toilet 1 N&W N-E S-E N-W&W N-W WORST

Toilet 2 N&W N-E S-E N-W&W N-E DESIRABLE


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PAGE: 18

Sky Condition and Natural Light(Bed room-1,9:00am)

June

December

False colorISO

Ref: Velux Daylight Visualizer

September


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PAGE: 19

Sky Condition and Natural Light(Bed room-1, 12:00pm)

December

JuneFalse colorISO


September


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PAGE: 20

Sky Condition and Natural Light(Bed room-1,3:00pm)

June

December

False colorISO


September


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PAGE: 21

Sky Condition and Natural Light(Bed room-2, 9:00am)

June

December

False colorISO


September


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PAGE: 22


June

December

False colorISO


September


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PAGE: 23


False colorISO

June

December


September


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PAGE: 24

Sky Condition and Natural Light(At plan level):

False colorISO9:00am, June

3:00pm, June

12:00pm, June



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PAGE: 25

Sky Condition and Natural LightFalse colorISO

9:00am,December

3:00pm,December

12:00pm, December



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PAGE: 26

Sky Condition and Natural Light(Bed room-1)

```

DAYLIGHT 3:00 PMDAYLIGHT 9:00 AM DAYLIGHT 12:00PM

ENLIGHTED

MORE MODERATE

MODERATE

LESS MODERATE

DARKER

User Response


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PAGE: 27

Summary of Analysis(Sky Condition and Natural Light)

We use VELUX day light visualize for measuring day light. Here VELUX doesn’t consider side surrounding buildings.

Beside VELUX gives us a unit of Cd/m2. So every m2 we gate different value of light. But here we consider a single room as a single value of light.

From analysis we come to that bed room 1 is more lighter than bed room 2

Veranda is always enlighten.

Toilet 1 is moderate then toilet 2.

For comparison we convert value of VELUX as same colour code as user.


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PAGE: 28

Wind Flow and VentilationMONTHLY WIND FLOW AND VENTILATION:

Ref: Autodesk Flow Design

WIND SPEED:

ANNUAL WIND FLOW AND VENTILATION:


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PAGE: 29

Wind Flow and Ventilation

GROUP- 02

GROUP- 02

SIMULATED INFORMATION for bedroom 1:

Q= K x A x V Q= Rate of ventilation air flow

For wind impending at a 45° angle of incidence roughly K= 0.4 A=(2.13 x 1.2)=2.55

V =3km/h= 0.73 m/s

Defining the Q= Rate of ventilation air flow

Data for bedroom 1:

Q = 2.55×.4×.73=.714m3/sec

SIMULATED INFORMATION for bedroom 2: Q= K x A x V Q= Rate of ventilation air flow

For wind impending at a 45° angle of incidence roughly K= 0.4 A=(2 X1)=2

V =6km/h= 0.73 m/s

Data for bedroom 2:

Q = 2×.4×.73=.584m3/sec


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PAGE: 30

Wind Flow and Ventilation

In Summer In Winter

Direct wind

Reflected wind


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PAGE: 31

Wind Flow and Ventilation(Annual):

From this annual report we come to know that –1. Maximum wind flow from western

side. 1-32 knots per hour.2. Medium wind flow from north-west3. Minimum wind flow from south-

east.


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PAGE: 32

Summary of Analysis(Wind Flow and Ventilation)

We use FLOW DESIGN for measuring wind flow.

Beside FLOW DESIGN gives us a unit of m/s2. So every m2 we gate different value of wind flow .

From analysis we come to that wind flows better in bed room 1 than bed room 2

Veranda is always well ventilated.

wind flows indirectly from kitchen in winter.The service zone is not well ventilatedToilets are well ventilatedWe know in summer wind comes from south. But our building

are north-faced. But the south wind from west zone and reflected with tall buildings and come from north.


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PAGE: 33

Precipitation and Driving Rain

DRIVING RAIN

WATERED AREA

PRICIPITATION AND DRIVING RAIN AT PLAN LEVEL

User Response


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PAGE: 34


NORTH-WEST VARENDA

2’

User Response


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PAGE: 35


1’

BEDROOM -1

User Response


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PAGE: 36


6”

BEDROOM-2

User Response


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PAGE: 37

Comparative Analysis with Mahoney Table

Functions Most Desirable

Desirable Less Desirable

Worst In our Project

Remark

Bedroom1 S &S-E N-E S-W NW/W N-W WORST

Bedroom 2 S &S-E N-E S-W NW/W N-E DESIRABLE

Dining S &S-E S-W&N-E N-W W W WORST

Kitchen N&W N-W&E S-W&N-E S&S-E N-E LESSDESIRABLE

Toilet 1 N&W N-E S-E N-W&W N-W WORST

Toilet 2 N&W N-E S-E N-W&W N-E DESIRABLE


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PAGE: 38

Summary of Analysis:

conditions Existing in the project

North-south orientation Orientation north-south

Open spacing for breeze penetration Open spacing in one side, on the south.

Large openings 40-80% Medium openings 30%-35%

Light walls short time lags Walls are light, internal walls are 5’’

Protection for heavy rain No Protection from rain

Light ,insulated roof Light, insulated roof available

Open spacing and protection from hot and cold Minimum Protection from hot and cold


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PAGE: 39

Conclusion THE BUILDING IS NORTH FACED. THERE IS ROAD BESIDE THE BULDING. WHICH IS NOT COMFORTABLE FOR PRIVACY. THERE IS DRAIN BESIDE THE BULDING, WHICH HAMPERS THE ENVIROMENT BEYOND THE BUILDING THERE IS MANY VEGETATION.

AFTER THE ANALYSIS OF THE ASPECTS OF CLIMATIC FACTORS , THE PROJECT WE HAVE ANALYSIED IS NOT SATISFCATORY. DO NOT SATISFY THE REQUIREMENETS OF COMFORT LEVEL OF HUMAN BEING.


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PAGE: 40

References http://suncalc.net/#/22.802,89.5425,16/2015.12.21/16:58http://www.sunearthtools.com/dp/tools/pos_sun.phphttp://www.weatheronline.co.uk/Bangladesh/Khulna.htmhttp://www.weatheronline.co.uk/weather/maps/current?LANG=en&CONT=ukukhttp://sustainabilityworkshop.autodesk.com/sites/default/files/styles/large/public/core-page-inserted-images/climate_windrose-underlay_vasari.jpghttp://sustainabilityworkshop.autodesk.com/buildings/ecotect-vasari-climate-analysishttp://www.autodesk.com/education/homehttps://www2.buildinggreen.com/climate-analysis-webcasthttps://www.ntnu.no/documents/10310/32999357/AAR4832-4532+course+presentation.pdf/bf653cf1-5a7d-434e-ac7a-e8f43d295053http://www.slideshare.net/search/slideshow?searchfrom=header&q=climatic+analysis+of+a+building&ud=any&ft=all&lang=en&sortWikipediaManual of tropical housing and building – koenigsberg, Ingersoll, mayhew, szokolayClimate and build form- NTNU master of science programme.

climatic issues

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