ENVIRONMENT SCIENCE AND

SERVICES SEMESTER 8

HARSH A-1112

SIDDHANT B-3312

TEJ B-4612

SAGAR B-5012

VIBHUTI B-5712

MITESH B-3611

AMIT B-4011

SETU B-4311

SNEHAL B-5211

CONTENT Climatic Zones in India Human comfort according to region Case study Teri, Banglore (Moderate) Himurja, shimala (Cold and cloudy) Shrujan (Hot and Dry)i. Climate, location & orientationii. Day light Thermal comfort • Air circulation• Material• Landscapingiii. Water harvesting

Hot and dry Warm and humid

Cold and sunny Cold and cloudy Composite Moderate

Solar radiation High direct radiation from sun.

Usually diffuse radiation due to cloud cover or vapor content of it.

Intense with low percentage of diffuse radiation.

Low in winter with high percentage of diffuse radiation.

Intense in summer and winter with low percentage of diffuse radiation but very low in monsoon with predominantly diffuse radiation.

More or less uniformly moderate all through the year.

TemperatureSummer mid daySummer nightWinter mid dayWinter nightDiurnal variation

40*-45*C20*-30*C5*-25*C0*-15*C15*-20*C

30*-35*C25*-30*C25*-30*C20*-25*C5*-8*C

17*-25*C4*-11*C-7*-(-8*)C-14*-0*C25*-25*C

20*-30*C17*-21*C4*-8*C-3*-(-4*)C5*-15*C

32*-43*C27*-32*C10*-25*C4*-10*C35*-22*C

30*-34*C17*-24*C27*-33*C16*-18*C8*-13*C

Relative humidity very low (25-40%) High (70-90%) Consistently low (10-50%)

Varies between 70 and 80%

In dry periods 20-50% in wet periods 55-95%

Variable between 30 and 80%

Precipitation Low generally 500mm per year

High generally 1200mm per year

Very low less then 200mm per year

Moderate, distribute evenly throughout the year annual total around 1000mm

Variable between 500 to 1300mm

Fairly well distributed total annual rainfall usually exceeding 1000mm

Winds Dust laden local winds in afternoon

Usually 1 or 2 prevailing directions with velocities ranging from extremely low.

Occasionally intense Generally intense especially during rainfall. Mainly dependent on topography.

Hot and dusty, during summer, strong winds in monsoon from south-east.

Variable, generally high during winter.

Sky condition Cloudless skies with high solar radiation causing glare.

Generally overcast causing unpleasant glare.

Fairly throughout the year with cloud cover less than 50%.

Overcast for most part of the year.

Varying overcast and dull in the monsoon. Clear during summer and winter.

Mainly clear, occasionally overcast with dense low clouds in summer.

Vegetation Scare vegetation generally consisting of grass, cacti or thorny trees.

Relatively flat regions with abundant vegetation.

Mountainous regions with little vegetation.

Highland regions with abundant vegetation in summer.

Extremely variable landscape with rapid seasonal changes in vegetation.

Generally hilly or high plateau region with fairly abundant vegetation.

Reference : climate responsive architecture

CASE STUDIES

TERI (MODERATE) , BANGALORE

HIMURJA BUILDING (COLD & CLOUDY) , SHIMLA

SHRUJAN (HOT&DRY) , BHUJODI

HUMAN COMFORT RANGE

Hot & dry

Temperature 21* - 27 * C in summer 20.5 * - 25 * C in winter Humidity 20 % - 75 % RH in winter & summerRadiation Air movement (wind)5 to 11 kmphDay light/ glareDGP(day light glare probability)DGP < 35% --- imperceptible 35% <DGP<40% -- perceptible 40% <DGP<45% --disturbing45% <DGP –intolerance

Cold & cloudy

Temperature 21* - 27 * C in summer 20.5 * - 25 * C in winter Humidity 20 % - 75 % RH in winter & summerRadiation Air movement (wind)2 to 5 kmphDay light/ glareDGP(day light glare probability)DGP < 35% --- imperceptible 35% <DGP<40% -- perceptible 40% <DGP<45% --disturbing45% <DGP –intolerance

Reference :Book: climate responsive architecture , www.rnh3bc.wordpress.com, www.iawe.org, www.utexus.edu, www.energydesigntools&ucla.edu, www.intigrateddesignlab.com , National building code 2005

Moderate

Temperature 21* - 27 * C in summer 20.5 * - 25 * C in winter Humidity 20 % - 75 % RH in winter & summerRadiation Air movement (wind)5 to 11 kmphDay light/ glareDGP(day light glare probability)DGP < 35% --- imperceptible 35% <DGP<40% -- perceptible 40% <DGP<45% --disturbing45% <DGP –intolerance

Climate of Banglore North

EastWest

South

May – October(7-34 kmph)

Temp : 14 *C - 35 * C

Solar radiation 19.70 MJ m-2 day-1

November – March

B A

Section A

Section B

1

3,4

Key plan

2VIEW 1

VIEW 2

VIEW 3

VIEW 4

Day light • Photo voltaic cells are used at

line with primary orbit of the sun ( about 22-22.5 degrees).

Key plan

Section C

Photo voltaic panelsSolar chimney

Photovoltaic cellsStructural support

C

Air circulation

• Unhygienic foul breeze blowing from “naala” side is kept away by blank wall.

• Black kadappa stone is deliberately used because it is good absorbent of heat.

Section A

A

Key plan

Reference : Mind space architects

South west wall cladded with black KADAPPA stone

Trombe wall effect

Filler slab used to minimize heat gain

Landscape

LVL + 5.65

LVL + 6.0

LVL + 8.0LVL + 8.3

LVL + 7.2

Rainfall : 970 mm

Water harvesting

Himurja office building – Shimla

Temp: 3* - 28* C

3 – 14 kmph

Reference : climate responsive architecture

North

EastWest

South

N

Day light, Sun radiation & heat gain

Day light, Solarium , solar chimney , air heating panels

Shrujan Trust, Bhujodi, Bhuj

N

Temp: 19.5*- 49* C

12 – 45 kmph

Reference : indigo architects

GROUND FLOOR1. ENTRY2. FOYER3. RETAIL STORE4. OUTDOOR CAFE5. LOUNGE6. PANTRY7. WORKSHOP8. SERVICES9. PASSAGE10. TOILET11. OFFICE12. RECEPTION13. COURTYARD14. UGT15. RAIN WATER TANK

FIRST FLOOR16. RETAIL STORE17. TEXTILE EXHIBIT

GALLERY18. DESIGN CELL19. FABRIC DRYING TERRACE20. GUEST ROOM 21. TIOLET22. LOBBY23. AUDITORIOM

N

NGROUND FLOOR1. ENTRY 2. FOYER3. RETAIL STORE4. OUTDOOR CAFE5. LOUNGE6. PANTRY7. WORKSHOP

8. SERVICES9. PASSAGE10. TIOLET11. OFFICE12. RECEPTION13. COURTYARD14. UGT15. RAIN WATER TANK

Heat gain

Wind tower

Air circulation