teri guidelines
TRANSCRIPT
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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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Guidelines ProposedMandatory Clause
Technical Guidelines Benefit
Development of Building Regulations and Guidelines toAchieve Energy Efficiency in Bangalore City
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)
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
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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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Solar passivedesign for newbuildings.
Guidelines ProposedMandatory Clause
Technical Guidelines Benefit
Development of Building Regulations and Guidelines toAchieve Energy Efficiency in Bangalore City
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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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Solar passivedesign for new
buildings.Guidelines Proposed
Mandatory ClauseTechnical Guidelines Benefit
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Figure 1.3.3: Average daily solar radiation received on the north orientation
faade
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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
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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Solar passivedesign for new
buildings.Guidelines Proposed
Mandatory ClauseTechnical Guidelines Benefit
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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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Solar passivedesign for new
buildings.Guidelines Proposed
Mandatory ClauseTechnical Guidelines Benefit
1.3.8 Thermal storage/thermal capacity'
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1.3.10 Thermal insulation'
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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
ECBC requirements for external walls(!
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Table 1.3.1: Roof assembly U-factor requirements as per ECBC 2007
Climate zone 24-hour-use buildings
Hospitals, hotels, call centers,
etc.
Daytime-use buildings
Other building types
Maximum U-factor of the overall
assembly (W/m2-K)
Maximum U-factor of the
overall assembly (W/m2-K)
Moderate U-0.440 U-440
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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C
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Guidelines ProposedMandatory Clause
Technical Guidelines Benefit
Development of Building Regulations and Guidelines toAchieve Energy Efficiency in Bangalore City
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Table 1.3.2: Roof assembly U-factor requirements as per ECBC 2007
Climate
zone
24-hour-use buildings
Hospitals, hotels, call centers, etc.
Daytime-use buildings
Other building types
Maximum U-factor of the overall
assembly (W/m2-K)
Maximum U-factor of the overall
assembly (W/m2-K)
Moderate U-0.409 U-409
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
2. Expanded polystyrene 24.0 0.035 1.34
3. Expanded polystyrene 34.0 0.035 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
18. Resin bonded mineralwool
64.0 0.038 1.00
19. Resin bonded mineralwool
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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Development of Building Regulations and Guidelines toAchieve Energy Efficiency in Bangalore City
Solar passivedesign for new
buildings.Guidelines Proposed
Mandatory ClauseTechnical Guidelines Benefit
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1.3.16 Building envelop optimization for naturally ventilated buildings to achievethermal comfort
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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
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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
Floor Floor + stone + concrete 0.417
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
Floor Floor + stone + concrete 0.417
Glass for opening Single glazing unit (fully shaded) -
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Development of Building Regulations and Guidelines toAchieve Energy Efficiency in Bangalore City
Solar passivedesign for new
buildings.Guidelines Proposed
Mandatory ClauseTechnical Guidelines Benefit
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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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Solar passivedesign for newbuildings.
Guidelines ProposedMandatory Clause
Technical Guidelines Benefit
Development of Building Regulations and Guidelines toAchieve Energy Efficiency in Bangalore City
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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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Development of Building Regulations and Guidelines toAchieve Energy Efficiency in Bangalore City
Solar passivedesign for new
buildings.Guidelines Proposed
Mandatory ClauseTechnical Guidelines Benefit
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Figure 1.3.14: Cross ventilation achieved through openings
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Technical Guidelines Benefit
Development of Building Regulations and Guidelines toAchieve Energy Efficiency in Bangalore City
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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Development of Building Regulations and Guidelines toAchieve Energy Efficiency in Bangalore City
Solar passivedesign for new
buildings.Guidelines Proposed
Mandatory ClauseTechnical Guidelines Benefit
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Figure 1.3.18: Direct evaporative cooling, source Passive cooling
techniques, B. Mohanty
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Development of Building Regulations and Guidelines toAchieve Energy Efficiency in Bangalore City
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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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Development of Building Regulations and Guidelines toAchieve Energy Efficiency in Bangalore City
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