TERI Guidelines

7/31/2019 TERI Guidelines

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Solar passivedesign for newbuildings.

Guidelines ProposedMandatory Clause

Technical Guidelines Benefit

Development of Building Regulations and Guidelines toAchieve Energy Efficiency in Bangalore City

CHAPTER1 Solar passive design for new buildings

1.1 Solar Passive design for new buildings

1.1 Guidelines

Figure 1.1.1: Verandah with arches as a solar-passive strategy


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1.2 Proposed mandatory clause

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Table 1.2.1: Roof assembly U-factor requirements as per ECBC 2007

Climate zone 24-hour-use buildings

Hospitals, hotels, call

centres, etc.

Daytime-use buildings

Other building types

Maximum U-factor of the

overall assembly (W/m2-K)



Moderate U-0.409 U-409

Table 1.2.2: Vertical fenestration U-factor and SHGC requirements (U-factor in

W/m2-K)

Climate Maximum U-factor (W/m2-K) Maximum SHGCfor WWR 40% Maximum SHGC for 40%


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Solar passivedesign for new

buildings.Guidelines Proposed

Mandatory ClauseTechnical Guidelines Benefit

1.3 Technical guidelines1.3.1 Solar-passive design

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Figure 1.3.1: Forms in the

building acting as shading device

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Figure 1.3.2: Water and trees as landscape elements at Sangath, Ahmedabad

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1.3.3 Water bodies

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1.3.4 Orientation 8

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Figure 1.3.3: Average daily solar radiation received on the north orientation

faade


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Figure 1.3.4: Average daily solar radiation received on the south orientationfaade

Figure 1.3.5: Average daily solar radiation received on the east orientation faade


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Fiure1.3.6: Average daily radiation received on the west orientation faade

1.3.5 Building form: surface to volume ratio'

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1.3.8 Thermal storage/thermal capacity'

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1.3.10 Thermal insulation'

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ECBC requirements for external walls(!

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Climate zone 24-hour-use buildings

Hospitals, hotels, call centers,

etc.



Maximum U-factor of the overall

assembly (W/m2-K)




1.3.11 Optimization of roofs

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Figure 1.3.7: Average daily intensity of solar radiation incident on the

horizontal roof surface in Bangalore


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1.3.12 Techniques to reduce heat gains through roofs

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Hospitals, hotels, call centers, etc.




assembly (W/m2-K)


assembly (W/m2-K)


Table 1.3.3: Examples of the ECBC-compliant roof assembly

Roof U factor

(W/m2-K)

U factor Btu/h

(sf-oF)

Foam concrete or perlite instead of mud Phuska 0.069 0.012

RCC slab with extruded polystyrene 2.4 36 kg/m3 0.380 0.067

RCC slab with Extruded polystyrene 3 36 kg/m3 0.312 0.055

RCC slab with Expanded polystyrene (thermocole) 3

24 kg/m3

0.409 0.072

RCC slab with Phenolic foam 2.4 32 kg/m3 0.363 0.064

RCC slab with phenolic foam 3 32 kg/m3 0.301 0.053

RCC slab with polyurethane spray 2.4 42 2 kg/m3 0.319 0.056

RCC slab with polyurethane spray 3 42 2 kg/m3 0.259 0.046


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RCC slab with polyisocyanurate spray 2.4 42 kg/m3 0.329 0.058

RCC slab with polyisocyanurate spray 3 42 kg/m3 0.267 0.047

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Table 1.3.4: Thermal properties of building and insulating materials at a mean

temperature of 50C

Sl. No. Type of material Density Thermal

conductivity*

Specific heat

capacity(1) (2) (3) (4) (5)

Kg/m3 W/ (m-K) KJ /(kg-K)

Building materials

1. Burnt brick 1 820 0.811 0.88

2. Mud brick 1 731 0.750 0.88

3. Dense concrete 2 410 1.74 0.88

4. R.C.C. 2 288 1.58 0.88

5. Limestone 2 420 1.80 0.84

6. State 2 750 1.72 0.84

7. Reinforced brick 1 920 1.10 0.84

8. Brick tile 1 892 0.798 0.88

9. Line concrete 1 646 0.730 0.88

10. Mud Phuska 1 622 0.519 0.88

11. Cement mortar 1 648 0.719 0.92

12. Cement concrete 1 762 0.721 0.84

13. Cinder concrete 1 406 0.686 0.84

14. Foam slag concrete 1 320 0.285 0.88

15. Gypsum plaster 1 120 0.512 0.96

16. Cellular concrete 740 0.188 1.05

17. AC sheet 1 520 0.245 0.84

18. GI sheet 7 520 61.06 0.50

19. Timber 480 0.072 1.68

20. Timber 720 0.144 1.68

21. Plywood 640 0.174 1.76

22. Glass 2 350 0.814 0.88

23. Alluvial clay (40% sans) 1 958 1.211 0.84

24. Sand 2 240 1.74 0.84

25. Black cotton clay

(Madras)

1 899 0.735 0.88


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26. Black cotton clay

(Indore)

1 683 0.606 0.88

27. Tar felt (2.3 kg/m3) - 0.479 0.88

(Source, Handbook on Functional Requirements of Buildings, SP:411987, BIS)

Sl. No. Type of material Density Thermalconductivity*

Specific heatcapacity

(1) (2) (3) (4) (5)

Kg/m3 W/(m-K) KJ/(kg-K)

Insulating materials

1. Expanded polystyrene 16.0 0.038 1.34



4. Foam glass 127.0 0.056 0.75

5. Foam glass 160.0 0.055 0.75

6. Foam concrete 320.0 0.070 0.92

7. Foam concrete 400.0 0.084 0.92

8. Foam concrete 704.0 0.149 0.92

9. Cork slab 164.0 0.043 0.96

10. Cork slab 192.0 0.044 0.96

11. Cork slab 304.0 0.055 0.96

12. Rock wool (unbonded) 92.0 0.047 0.84

13. Rock wool (unbonded) 150.0 0.043 0.84

14. Mineral wool(unbonded)

73.5 0.030 0.92

15. Glass wool (unbonded) 69.0 0.043 0.92

16. Glass wool (unbonded) 189.0 0.040 0.92

17. Resin bonded mineralwool

48.0 0.042 1.00


64.0 0.038 1.00


99.0 0.036 1.00

20. Resin bonded glass

wool

16.0 0.040 1.00

21. Resin bonded glasswool

24.0 0.036 1.00

22. Exfoliated vermiculite(loose)

264.0 0.069 1.00

23. Asbestos mill board 1 397.0 0.249 0.88

24. Hard board 979.0 0.279 0.84

25. Straw board 310.0 0.057 1.42

26. Soft board 320.0 0.066 1.30

27. Soft board 249.0 0.047 1.30

28. Wall board 262.0 0.047 1.30

29. Chip board 432.0 0.067 1.26


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30. Chip board (perforated) 352.0 0.066 1.26

31. Particle board 750.0 0.098 1.30

32. Coconut pith insulationboard

520.0 0.060 1.09

33. Jute fiber 329.0 0.067 1.09

34. Wood wool board(bonded with cement)

398.0 0.081 1.13

35. Wood wool board(bonded with cement)

674.0 0.108 1.13

36. Coil board 97.0 0.038 1.00

37. Saw dust 188.0 0.051 1.00

38. Rice husk 120.0 0.051 1.00

39. Jute felt 291.0 0.042 0.88

40. Asbestos fiber (loose) 640.0 0.060 0.84

1.3.13 Fenestration and shading

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1.3.15 Daylight integration

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1.3.16 Building envelop optimization for naturally ventilated buildings to achievethermal comfort

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Table 1.3.5: Envelop specifications

Envelop with

brick wall

Composition U-value

Wall Plaster + brick + plaster 2.203

Roof (insulated)Plaster + concrete + expanded

polystyrene + plaster + stone0.349

Floor Floor + stone + concrete 0.417

Glass for opening Single glazing unit fully shaded -

Envelop with

concrete wallComposition U-value

Wall Plaster + concrete + plaster 3.443

Roof (Insulated)Plaster + concrete + expanded

polystyrene + plaster + stone0.349


Glass for opening Single glazing unit fully shaded -

Envelop with

mud-block wallComposition U-value

Wall Plaster + mud block + plaster 3.443

Roof (insulated)Plaster + concrete + expanded polystyrene +

plaster + stone0.349


Glass for opening Single glazing unit (fully shaded) -

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Figure 1.3.11: Zone temperature conditions of non-air-conditioned spaces in

residences on the hottest day (April 11) of the year.

Figure 1.3.12: Zone temperature conditions of non-air-conditioned spaces in

the office on the hottest day (April 11) of the year.

1.3.17 Low-energy passive-cooling strategies for Bangalore!)

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Figure 1.3.13: Various design strategies reflected in the psychrometric chart

for the climate of Bangalore (Reference: Climate Calculator)

1.3.18 Ventilation;$

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Figure 1.3.14: Cross ventilation achieved through openings

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Figure 1.3.15: Stack effect through openings at different level.

Figure 1.3.16: Effect of area of openings on average indoor wind velocity

Figure 1.3.17: Nocturnal cooling

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Figure 1.3.18: Direct evaporative cooling, source Passive cooling

techniques, B. Mohanty


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Figure 1.3.19: HUL solar passive building in Bangalore with ponds

integrated in the circulation areas to integrate evaporative cooling.


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Figure 1.3.20: Ways of integrating evaporative cooling

1.3.19 Radiative cooling5,

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1.3.20 Some low-energy cooling and design strategies that could be adopted inresidential buildings in Bangalore are described below. These strategies wereanalysed in the TRNSYS software.

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1.3.21 Example of a naturally ventilated office building in Bangalore

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1.3.23 Naturally ventilated building recommendations 49

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Payback Period

0

100

200

300

400

500

600

700

800

900

1,000

1 2 3 4 5 6 7 8 9 10

Years

Amountinlakhrupees

Incremental Investment

Cumulative savings

1.4 Benefits:

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Fig. 1.4.1: Integration of energy-efficient windows and insulated roofs,

compliant to ECBC guidelines, in air-conditioned buildings has a payback

period of less than 2 years.


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21 M/s. Digiflic Controls(India) Pvt Ltd,

Sit2e8 /03/2008 No. 9, 2nd Cross,Rajagopala Nagar, Main RoadBangalore

Pin : 560058

Tel : 080-28366839Fax : 080-28362689Email : [email protected]

22 M/s. KateelEngineering Industry(P) Ltd

19 & 20, Bhadrappa Estate,Magadi Main Road,Kamakshipalaya, Unit I, BangalorePin : 560079

Tel : 23481305,23484179Fax : 23481305Email : [email protected]

23 M/s Solar HitechGeysers

No. 4, Sri Krishna, Behind Bhima Jyothi LICColony, West of Chord Road, Bangalore 560079

Fax: 080-23223152, 23221511e-mail: [email protected]

24 M/s. EmmVee SolarSystems Pvt. Ltd.,

#55, Solar Tower, 6th Main, 11th cross,Lakshmaiah Block, Ganganagar,Bangalore 560 024.

Tel: 080-23337428, Fax: 080-23332060e-mail: [email protected]

25 M/s. VijayaIndustries,

Katapady 574 105, Udupi Dist, Karnataka Tel: 0820-2557127Fax: 0820-2557327, Mobile:09448377327

e-mail: [email protected] M/s. Rashmi

Industries,No.60 & 61, Begur Road, Hongasandra,Bangalore 560 068

Tel: 080-25734114 / 15e-mail: [email protected]

website: www.rashmisolar.com

27 M/s. Orb Energy Pvt.Ltd.,

No.893, 3rd Cross MC Layout Vijayanagar,Bangalore 560 040

Tel: 080-23145931-35,Fax: 080-23145930e-mail: [email protected]: www.orbenergy.com

28 M/s. Anu SolarPower Pvt. Ltd.,

248 3rd Cross, 8th Main, 3rd Phase PeenyaIndustrial Area, Bangalore 560 058.

Tel: 080-28394259, 28393913e-mail: [email protected]: www.anusolar.com

29 Wipro Eco Energy(A division of WiproLtd.)

Wipro Eco Energy, S.B.Towers.88, MG Road, Bangalore-560001

Tel: 080-41994004, [email protected]

30 M/s HamshineElectronics & EnergySystem

B.Katehalli Industrial Area, Plot No.7A/1,Hassan 573201 (Karnataka)

Tel: 8172-240219Mob: 9448140219e-mail: [email protected]

31 M/s. Legend SolarEnergy SystemsPrivate Limited

295B, KIADB Industrial Area Bommasandra Jigani Link Road, Jigani Bangalore.

Tel:- 80-7825595 ,e-mail:[email protected]:- www.legendkingdom.com

32 M/s. G.C. SolarIndustries

977, Ground Floor, ITI Society Layout,Outer Ring Road, Nagarabhavi

Road, Banglore 560072

Tel: 080-23210848/ 23183060/9845023816 (Mob)Fax: 080-23210848e-mail:[email protected]: gcsolarindustries.com

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