APPENDIX XIV
Medium No. Environmental Conditions Compliance
Topography
and
Natural
Drainage
1 � The natural drain system should be maintained for
ensuring unrestricted flow of water. No
construction shall be allowed to obstruct the natural
drainage through the site. No construction is
allowed on wetland and water bodies. Check dams,
bio- swales, landscape, and other sustainable urban
drainage systems (SUDS) are allowed for
maintaining the drainage pattern and to harvest rain
water.
� Buildings shall be designed to follow the natural
topography as much as possible. Minimum cutting
and filling should be done.
� The site does not have
any natural water stream
passing through or
nearby.
� Adequately designed
storm water drain
system shall be properly
maintained to avoid
water logging on site.
� Provision of rain water
harvesting tanks.
� The site is flat land
Water
Conservation,
Rain Water
Harvesting,
and Ground
Water
Recharge
2 � A complete plan for rain water harvesting, water
efficiency and conservation should be prepared.
� The local bye-law provisions on rain water
harvesting should be followed. If local bye-law
provision is not available, adequate provision for
storage and recharge should be followed as per the
Ministry of Urban Development Model Building
Bye-laws, 2016.
� A rain water harvesting plan needs to be designed
where the recharge bores of minimum one recharge
bore per 5,000 square meters of built up area and
storage capacity of minimum one day of total fresh
water requirement shall be provided. In areas where
ground water recharge is not feasible, the rain water
should be harvested and stored for reuse. The ground
water shall not be withdrawn without approval from
the Competent Authority.
� All recharge should be limited to shallow aquifer
� The ground water table
at the project site is 4.00
mt. to 8.00 mt below
ground surface hence
ground water recharging
is not proposed.
� Provision of 4 rain water
harvesting tanks of total
capacity 164 KL
� Use of harvested rain
water for domestic
purpose (28 KLD) and its
reuse thereby reducing
the fresh water demand
in monsoon season i.e. 49
%
� Water efficient
landscaping
� Use of low flow fixtures
and sensors to promote
water conservation
2(a) At least 20 % of the open spaces as required by the
local building bye-laws shall be pervious. Use of Grass
pavers, paver blocks with at least 50% opening,
landscape etc. would be considered as pervious surface.
� Complied with the
condition; with all
required pervious open
space.
2(b)
Use of water efficient appliances should be promoted.
Low flow fixture or sensors be used to promote water
conservation
� Provision of dual flush
cistern, low flow fixtures
and sensors to promote
water conservation
� Water efficient
landscaping shall be done
2(c) Separation of grey and black water should be done by
the use of dual plumbing system. In case of single stack
system separate recirculation lines for flushing by
giving dual plumbing system be done.
� Provision of STP of 350
KL for treatment of
sewage up to tertiary
level
� Use of treated sewage for
flushing (124 KLD) and
gardening (3 KLD)
APPENDIX XIV
Medium No. Environmental Conditions Compliance
Solid Waste
Management
3
� Solid waste: Separate wet and dry bins must be
provided in each unit and at the ground level for
facilitating segregation of waste.
� The provisions of the Solid Waste (Management)
Rules 2016 and the e-waste (Management) Rules
2016, and the Plastics Waste (Management) Rules
2016 shall be followed.
Solid Waste Management
& Relevant Acts:
Complied as per the
conditions mentioned
3(a) All non-biodegradable waste shall be handed over to
authorized recyclers for which a written tie up must be
done with the authorized recyclers.
Organic waste composter/ Vermiculture pit with a
minimum capacity of 0.3 kg/person/day must be
installed.
Sewage
Treatment
Plant
4 � Onsite sewage treatment of capacity of treating
100% waste water to be installed. Treated waste
water shall be reused on site for landscape, flushing,
cooling tower, and other end-uses. Excess treated
water shall be discharged as per CPCB norms.
Natural treatment systems shall be promoted.
� Sludge from the onsite sewage treatment, including
septic tanks, shall be collected, conveyed and
disposed as per the Ministry of Urban Development,
Central Public Health and Environmental
Engineering Organization (CPHEEO) Manual on
Sewerage and Sewage Treatment Systems, 2013.
Sewage Treatment &
Sludge Disposal :
Proposed as per the
conditions mentioned
Energy 5 � Compliance with the Energy Conservation Building
Code (ECBC) of Bureau of Energy Efficiency shall
be ensured. Buildings in the States which have
notified their own ECBC, shall comply with the State
ECBC.
� Outdoor and common area lighting shall be Light
Emitting Diode (LED).
� Concept of passive solar design that minimize energy
consumption in buildings by using design elements,
such as building orientation, landscaping, efficient
building envelope, appropriate fenestration, increased
day lighting design and thermal mass etc. shall be
incorporated in the building design.
� Wall, window, and roof u-values shall be as per
ECBC specifications
� Complying the conditions
mentioned in Energy
Conservation Building
Code (ECBC)
� Solar panels for
electricity generation for
apartments shall be
complied with.
5(a) Solar, wind or other Renewable Energy shall be
installed to meet electricity generation equivalent to 1%
of the demand load or as per the state level/ local
building bye-laws requirement, whichever is higher.
5(b) Solar water heating shall be provided to meet 20% of
the hot water demand of the commercial and
institutional building or as per the requirement of the
local building bye-laws, whichever is higher.
Residential buildings are also recommended to meet its
APPENDIX XIV
Medium No. Environmental Conditions Compliance
hot water demand from solar water heaters, as far as
possible.
5(c) � Use of environment friendly materials in bricks,
blocks and other construction materials, shall be
required for at least 20% of the construction material
quantity. These include fly ash bricks, hollow bricks,
AACs, Fly Ash Lime Gypsum blocks, Compressed
earth blocks, and other environment friendly
materials.
� Fly ash should be used as building material in the
construction as per the provisions of the Fly Ash
Notification of September, 1999 as amended from
time to time.
Complied as per the
conditions mentioned.
Air Quality
and Noise
6 � Dust, smoke & other air pollution prevention
measures shall be provided for the building as well as
the site. These measures shall include screens for the
building under construction, continuous dust/ wind
breaking walls all around the site (at least 3 meter
height). Plastic/tarpaulin sheet covers shall be
provided for vehicles bringing in sand, cement,
murram and other construction materials prone to
causing dust pollution at the site as well as taking out
debris from the site.
� Sand, murram, loose soil, cement, stored on site shall
be covered adequately so as to prevent dust pollution.
� Wet jet shall be provided for grinding and stone
cutting. Unpaved surfaces and loose soil shall be
adequately sprinkled with water to suppress dust.
� All construction and demolition debris shall be stored
at the site (and not dumped on the roads or open
spaces outside) before they are properly disposed. All
demolition and construction waste shall be managed
as per the provisions of the Construction and
Demolition Waste Rules 2016.
� All workers working at the construction site and
involved in loading, unloading, carriage of
construction material and construction debris or
working in any area with dust pollution shall be
provided with dust mask.
� For indoor air quality the ventilation provisions as per
National Building Code of India.
Complied with and is
reflected in the
Environmental
Management Plan
6(a) The location of the DG set and exhaust pipe height shall
be as per the provisions of the CPCB norms.
Complied as per CPCB
Norms
Green Cover 7 A minimum of 1 tree for every 80 Sq. mt. of land
should be planted and maintained. The existing trees
will be counted for this purpose. Preference should be
given to planting native species.
Complied as per local
norms
7(a) Where the trees need to be cut, compensatory
plantation in the ratio of 1:3 (i.e. planting of 3 trees for
APPENDIX XIV
Medium No. Environmental Conditions Compliance
every 1 tree that is cut) shall be done and maintained.
Top Soil
preservation
and reuse
8 � Topsoil should be stripped to a depth of 20 cm from
the areas proposed for buildings, roads, paved areas,
and external services. It should be stockpiled
appropriately in designated areas and reapplied
during plantation of the proposed vegetation on site.
Top soil (758 Cum) shall
be preserved and used for
gardening
Transport 9 � A comprehensive mobility plan, as per MoUD best
practices guidelines (URDPFI), shall be prepared to
include motorized, non-motorized, public, and private
networks.
� Road should be designed with due consideration for
environment and safety of users. The road system can
be designed with these basic criteria.
1. Hierarchy of roads with proper segregation of
vehicular and pedestrian traffic.
2. Traffic calming measures.
3. Proper design of entry and exit points.
4. Parking norms as per local regulation.
Complied with and is
reflected in the Traffic
Management Studies.
Environment
Management
Plan
10 An environmental management plan (EMP) shall be
prepared and implemented to ensure compliance with
the environmental conditions specified in item number
1 to 9 above. A dedicated Environment Monitoring Cell
with defined functions and responsibility shall be put in
place to implement the EMP. The environmental cell
shall ensure that the environment infrastructure like
Sewage Treatment Plant, Landscaping, Rain Water
Harvesting, Energy efficiency and conservation, water
efficiency and conservation, solid waste management,
renewable energy etc. are kept operational and meet the
required standards. The environmental cell shall also
keep the record of environment monitoring and those
related to the environment infrastructure.
Complied with and is
reflected in the
Environment Management
Plan
MUNICIPL CORPORATION OF GREATER MUMBAI No. EEBP / 6890 / GN / A
To, Architect, Shri Sunil G. Ambre of M/s. Sunil Ambre & Associates, Ground floor, Aban House, 25/31, Shree Sai Baba Marg, Behind Rhythm House, Kala Ghoda, Fort, Mumbai- 400 023.
Sub: Proposed building No.3 i.e. sale bldg. (Mall) on property bearing F.P. No. 580 of T.P.S – IV, Mahim division, situated at the junction of Senapati Bapat Marg & Kakasaheb Gadgil Marg, Dadar (West), Mumbai.
Ref.: Your letter dated 26.12.2016 Sir,
With reference to above letter this is to inform you that the amended plans
submitted by you are hereby approved subject to following conditions:
1. That the all conditions mentioned in earlier approved amended layout plans u/no.
EB/1054/GS/AL dated 15.06.2015 shall be complied with.
2. That all the conditions of IOD under even No. dated 31.10.2014 shall be complied
with.
3. That the revised structural design/ calculations/ details/ drawings shall be submitted
before extending C.C.
4. That payments towards following shall be made before asking for C.C.
a. Development charges.
b. Extra Water / Sewerage charges at A.E.W.W. ‘GN’ Ward Office.
c. Premiums towards deficient open space.
d. Premiums towards Additional Staircase area.
5. That the Regd. Undertaking against misuse of part terrace proposed at 4th floor
shall be submitted before asking for further C.C.
6. That the letter / NOC from MHADA mentioning actual B.U.A. to be surrendered to MHADA
if any shall be submitted before asking for further C.C. and such B.U.A. shall be
marked on plan and plans shall be got amended from this office.
7. That the final N.O.C. from C.F.O. shall be submitted before asking for Occupation
permission.
8. That the drainage layout shall be revised and be got approved from this office
before carrying out further drainage work.
9. That the final N.O.C. from MHADA shall be submitted before asking occupation
permission to sale component of building.
10. That the final N.O.C. from Tree Authority shall be submitted before asking for
occupation permission.
11. That the C.C. shall be got endorsed as per the amended plan.
12. That the work shall be carried out strictly as per approved plan.
13. That the final structural stability certificate shall be submitted before asking for
B.C.C.
14. That an Undertaking stating to hand over the setback land free of cost to M.C.G.M.
before granting the occupation of proposed building shall be submitted.
15. That the N.O.C. from Inspector of Lifts shall be submitted.
16. That the vermiculture bins for the disposal of wet waste as per design and
specifications of organization or companies specialized in this field as per list
furnished by Solid Waste Management of M.C.G.M. shall be provided.
17. That the provision of Rain Water Harvesting as per the drainage proposed by
approved consultant in the field shall be made in the satisfaction of Municipal
Commissioner shall be provided.
18. That the following documents shall be compiled, preserved and handed over to the
end user / prospective society within a period of 30 days in case of redevelopment
of properties and in other cases, the same should be handed over within a period of
90 days after granting occupation certificate by M.C.G.M.
a) Ownership documents; b) Copies of I.O.D., C.C., subsequent amendments, O.C.C., B.C.C. and
corresponding canvass mounted plans. c) Copies of soil investigation reports. d) R.C.C. details and canvass mounted structural drawings. e) Structural Stability Certificate from Licensed Structural Engineer. f) Structural Audit Reports. g) All details of repairs carried out in the building. h) Supervision certificate issued by the Licensed Site Supervisor. i) Building Completion Certificate issued by Licensed Surveyor/ Architect. j) NOC and completion certificate issued by the C.F.O. k) Fire safety audit carried out as per the requirement of C.F.O.
19 That the Registered sale agreement incorporating the following conditions shall be
submitted to this office.
I) That the prospective society / end user shall preserve & maintain the
following documents / plans & subsequent periodical structural audit reports
& repairs history, similarly to check & to carry out fire safety audit time to time
as per requirement of C.F.O. through the authorized agency of M.C.G.M.
a) Ownership documents; b) Copies of I.O.D., C.C., subsequent amendments, O.C.C., B.C.C. and
corresponding canvas mounted plans. c) Copies of soil investigation reports. d) R.C.C. details and canvass mounted structural drawings. e) Structural Stability Certificate from Licensed Structural Engineer. f) Structural audit reports. g) All details of repairs carried out in the building. h) Supervision certificate issued by the Licensed Site Supervisor. i) Building completion certificate issued by the Licensed Surveyor / Architect. j) NOC and completion certificate issued by the C.F.O. k) Fire safety audit carried out as per the requirement of C.F.O.
20. That the developer shall submit the registered Undertaking & Indemnity Bond that the conditions mentioned at Sr.No. 18 will be incorporated in the sale agreement & the same will be informed to the prospective society / end user.
21. That the supervision certificate shall be submitted periodically from the L.S. /
Engineer / Structural Engineer / Supervisor or Architect as the case may be as per
D.C. Regn. 5(3)(ix) regarding satisfactory construction on site.
22. That the NOC from Ch.E.(M&E) shall be submitted for adequate light and ventilation
of basement etc. before C.C. and completion certificate shall be submitted before
occupation.
23. That the work shall be carried out between 6.00 a.m. to 10.00 p.m., only in
accordance with Rule 5A (3) of the Noise Pollution (Regulation & Control) Rules,
2000 and the provision of notification issued by Ministry of Environment & Forest
Deptt. from time to time shall not be duly observed.
24. That the separate P.R. card in the name of M.C.G.M. will be submitted before
asking O.C. to sale building.
25. That the revised B.E.S.T. NOC will be submitted before asking C.C. above plinth
level.
26. That the revised NOC from MOEF shall be submitted before C.C. beyond
construction area of 20,000 sq.mt.
27. The proposed set back area will be hand over to M.C.G.M. before asking further
C.C. to building No. 3 as per policy.
28. That the structural stability certificate of puzzle car parking system shall be
submitted.
29. That the cross beam at upper level basement at height of 4.20 mt. / 3.0 mt. and
2.40 m at two wheeler parking spaces as per approved concession report shall be
got checked before granting further C.C. above basement.
30. That the remarks from H.E. in the content of circular in subject mentioned u/No.
2412/SR/ dtd. 7.10.2016 shall be submitted.
31. That the Revised C.F.O. NOC showing cut – off lobby etc. shall be submitted before
further C.C.
32. That the Regd. Undertaking cum Indemnity Bond indemnifying M.C.G.M. and its
officers against any claims, dispute arises out of failure of mechanized car parking
its users and occupants shall be submitted.
33. That the structures shown proposed to be demolished shall be demolished before
asking endorsement of C.C. or separate phasewise programme shall be submitted.
34. That the Regd. Undertaking for handing over setback area free of cost to M.C.G.M.
shall be submitted before asking endorsement of C.C.
35. That the handing over / taking receipt of set back area from W.O. / A.E.(M) shall be
submitted before asking C.C. to sale building as per policy. i.e this bldg.
36. That the Regd. Undertaking shall be submitted that:
a) The owner shall not have any objection if the neighbouring plot owner come
for development with deficiency in open spaces.
b) The condition shall be incorporated in the sale agreement with prospective
buyers that the building under reference is constructed with open space
deficiency.
37. That the Regd. Undertaking against misuses of vacant space / voids / basement
etc. shall be submitted.
38. That the NOC from M.B.R.&R. Board shall be submitted before asking for C.C.
above plinth, as per this amended plans.
39. The dry and wet garbage shall not be separated and the wet garbage generated in
the building shall not be treated separately on the same plant by the residents /
occupants of the building in the jurisdiction of M.C.G.M. The necessary condition in
sale agreement to that effect shall not be incorporated by the Developer / Owner.
40. That the utmost care such as police protection etc. shall be taken while
demolishing the existing structure of Buddha – vihar with due process of Law and
Indemnity Bond Indemnifying M.C.G.M. from any dispute litigation etc. arises if any
shall be submitted.
A copy of set of amended plans duly stamped / signed is hereby returned as a
token of approval.
Yours faithfully,
Executive Engineer SE(B.P.)City - XII AE(B.P.)City - VII (Building Proposal) City-III
No. EB/6890/GN/A
Copy to:
1. M/s. Sheetal Sagar Builders & Developers Pvt. Ltd. C.A.to Lokmanya Nagar Priyadarshini CHS Ltd. 51, Nariman Bhavan, Nariman Point, Mumbai – 400 021. 2. Designated Officer, Asst.Eng.(B&F.) “GN” Ward.
3. A.E.W.W. “GN” Ward
4. Dy. A & C. City
5. Chief Officer, M.B.R. & R. Board
6. A.O.( B.P.) City.
Executive Engineer SE(B.P.)City - XII AE(B.P.)City - VII (Building Proposal) City-III
Sunil Gajanan Ambre
Digitally signed by Sunil Gajanan Ambre DN: c=IN, o=Sunil Ambre And Associates, ou=Architecture, postalCode=400023, st=Maharashtra, 2.5.4.20=6b33f1312c621076357698cc7e8adf1e2ea2fd4ad8b1f28a816688339b1e9e0a, serialNumber=45716547f643c762ac05431082872c0819ac49c38e7fe0f60ecccf4530aac28e, cn=Sunil Gajanan Ambre Date: 2017.04.10 19:00:21 +05'30'
GAURAV GANDHI
Digitally signed by GAURAV GANDHI DN: c=IN, o=Personal, postalCode=400006, st=Maharashtra, 2.5.4.20=e555352a04c20877ab8cdd8ef4ae88e35999e57c2f73f0d6c504c298dfcaff79, serialNumber=f9261e38243d4a75ec48c30758f48dadb2bd9e401b124dd832184f47ccfe8dba, cn=GAURAV GANDHI Date: 2017.04.10 19:13:43 +05'30'
Amit Jagannath MaratheDigitally signed by Amit Jagannath Marathe DN: c=IN, o=Municipal Corporation of Greater Mumbai, ou=Building Proposal, postalCode=400001, st=Maharashtra, 2.5.4.20=67dcfdf07db7d357e81a32931a9247572a72a7c6be25d14cd47e7490af55ed0d, serialNumber=54ce83ea89f80fafb1d5fbba7dcd31c16b44c9773ed65dc80d3cc85a1829ea65, cn=Amit Jagannath Marathe Date: 2017.04.11 18:39:09 +05'30'
Medha Prabhakar VaidyaDigitally signed by Medha Prabhakar Vaidya Date: 2017.04.12 17:54:17 +05'30'
Vivek Tukaram KhotDigitally signed by Vivek Tukaram Khot DN: c=IN, o=Municipal Corporation Of Greater Mumbai, ou=Executive Engineer, postalCode=400001, st=Maharashtra, cn=Vivek Tukaram Khot Date: 2017.04.13 21:03:23 +05'30'
BUILDING PERFORMANCE ANALYSIS REPORT
SHEETAL SAGAR
Mumbai
DESIGN ANALYSIS REPORT : 1st May 2017
S H E E T A L S A G A R B U I L D E R S &
D E V E L O P E R S P V T . L T D
K A I Z E N D E S I G N S O L U T I O N S
EXECUTIVE SUMMARY
This report has been prepared for Sheetal Sagar,
Residential cum commercial redevelopment project,
Mumbai. This report is part of a process towards
obtaining Environmental Clearance from MOEF. The
specific objective of this report is to evaluate annual
energy usage and apply various energy efficiency
measures for ECBC Compliance for maximum Energy
Efficiency.
The building was analyzed using hourly energy
simulation to evaluate the performance in terms of
energy consumption and thermal comfort of the
occupants. The purpose of this report is to present
the performance of the design building in
comparison to a baseline budget building based on
ECBC 2007.
It is observed via various analysis tools that the
buildings are properly Shaded, Naturally ventilated
& has sufficient Daylight. It is determined via
simulation that the Tenant Building 1, saves 1.06%
in Energy over the ECBC 2007 mandated baseline.
Similarly Tenant Building 2, saves 3.30% in Energy
In addition to this, if we consider Solar PV
generation, the final saving will rise to 4.70% over
the ECBC 2007 mandated baseline
The report is structured as follows.
CLIMATIC ANALYSIS
SHADING ANALYSIS
DAYLIGHT ANALYSIS
VENTILATION CALCULATIONS
HEAT ISLAND EFFECT
SHADING & RADIATION
RENEWABLE ENERGY
ENERGY SIMULATION
HEAT GAIN CALCULATION
BUILDING PERFORMANCE ANALYSIS REPORT
3 SHEETAL SAGAR, MUMBAI Kaizen Design Solutions
CLIMATIC ANALYSIS :
The Psychrometric Chart above explains that, no other strategy is effective for passive comfort except Shading &
Ventilation. Around 20% of total comfort hours can be achieved by Sun Shading & Natural Ventilation. 10% can be
achieved by ceiling fan forced ventilation & for the rest 70% of the time air conditioning may be required. For this
analysis, the Comfort Criterion was set at 22 to 26 degree C for dry bulb temperature & relative humidity to 70%.
The graph plot on next page clearly shows the degree difference between the Dry Bulb Temperature & Relative
Humidity. That’s why strategies like Evaporative cooling, Thermal mass, Night purging etc. will not be effective at
all. The Pshychrometric Chart above confirms that the only two effective strategies are Shading & Ventilation. As
per the legend, at least 30% of the total hours are in comfort range with an effective wind speed of 3 to 5 m/s. Fan
forced ventilation is certainly an effective strategy & comparatively cheaper than AC.
Next is he annual wind pattern of Mumbai city. The purpose is to understand this Wind Pattern. If you observe
the legend carefully, you will understand that, 10% of the total annual wind is flowing from West direction, which
has a temperature C, with a humidity around 70% & maximum wind speed is 8 m/s at one point of time. The
predominant wind direction in Monsoon Period is West – South-West.
BUILDING PERFORMANCE ANALYSIS REPORT
4 SHEETAL SAGAR, MUMBAI Kaizen Design Solutions
DRY BULB X RELATIVE HUMIDITY
ANNUAL WIND PATTERNS
MONTH WISE DETAILS
SEASONAL WIND PATTERNS
SUMMER WINTER
JUNE JULY AUGUST
BUILDING PERFORMANCE ANALYSIS REPORT
5 SHEETAL SAGAR, MUMBAI Kaizen Design Solutions
SHADING ANALYSIS:
Mutual shading plays an important role in heat gain through envelope. Though envelope insulation has more
contribution towards heat gain reduction, at the same time Mutual & Window Shading is also effective. The
project team has consciously designed the shading devices reducing insolation on walls & windows. The analysis
confirms that proposed shading devices help to reduce incident radiation on envelope resulting in lesser heat load.
METHODOLOGY -
Virtual analysis tool – Ecotect has been used with the above information as a basis for the commentary provided
in this report. To determine impacts of the proposed project structures, the 3D virtual model of the proposed
building and surrounding structures were created in the software. Actual weather file of Mumbai were used for
the simulation.
OBJECTIVE -
The aim of the study is to assess the potential impact of proposed shades on the building envelope. The effects of
shading by one building upon another can be either positive or negative depending upon the site-specific
circumstances of the properties involved. A potential benefit of shading for adjacent structures may be a cooling
effect gained during warm weather. Negative consequences of shading include the loss of natural light for passive
or active solar energy applications or the loss of warming influences during cool weather. Factors influencing the
relative impact of shadow effects are site-specific and include differences in terrain elevation between involved
properties, the height and bulk of structures, the time of year, the duration of shading in a day, and the sensitivity
of adjacent land uses to loss of sunlight.
BUILDING PERFORMANCE ANALYSIS REPORT
6 SHEETAL SAGAR, MUMBAI Kaizen Design Solutions
HOURLY SHADOW PATTERNS -
CONCLUSION -
Shading analysis confirms that more than 40% of the walls & windows are shaded due to mutual and shading
devices designed in the project.
BUILDING PERFORMANCE ANALYSIS REPORT
7 SHEETAL SAGAR, MUMBAI Kaizen Design Solutions
Working
Plane
21st Sept - Clear Sky
750 mm
Design
Sky
The analysis has been performed at working plan height i.e. 750 mm from the floor level.
The simulation will analyse daylighting level on 21st September i.e. equinox in clear sky condition, as per ECBC requirement.
1
2
Glass VLT: 50%
Glass
VLT
200 x 200 mm
Analysis
Grid
All the floor spaces (daylight spaces) will be divided in an
analysis grid of 200 x 200mm, then daylight will be analyzed
on the same.
The value defines daylight’s transmission property of glass.
Higher the percentage, higher the daylight is allowed to
transmit.
3
4
DAYLIGHT ANALYSIS:
Simulation Method - Clear sky condition on 21st September at 12 noon, at working plane, 750 mm.
Glass VLT – 50%, Reflectances – Ceiling 70%, Wall 50% & Flooring 20%.
Typical Flat 1 – 1 BHK
BUILDING PERFORMANCE ANALYSIS REPORT
8 SHEETAL SAGAR, MUMBAI Kaizen Design Solutions
VENTILATION ANALYSIS:
Simulation Method – IES VE MacroFlo
Typical 1 BHK Flat – Tenant Building 2
Space Ventilation Rate
Required Ventilation as per NBC 2005 Compliance
Living Room 4.05 3 - 6 Yes Kitchen 3.25 3 - 6 Yes Bedroom 1 3.35 2 - 4 Yes
Geometry Inputs
Opening Properties
Operable Area 66%
Operating Time As per occupancy schedule
Degree of Opening 33°C
Climate Data
Weather File Mumbai ISHRAE
Wind Speed As per climate file
Obstruction Analysis
Ventilation Analysis
10 km/ h
20 km/ h
30 km/ h
40 km/ h
50 km/ h hrs443+39835431026522117713288<44
Wind Frequency (Hrs)
10 km/ h
20 km/ h
30 km/ h
40 km/ h
50 km/ h °C45+403530252015105<0
Average Wind Temperatures
10 km/ h
20 km/ h
30 km/ h
40 km/ h
50 km/ h %95+8575655545352515<5
Average Relative Humidity
10 km/ h
20 km/ h
30 km/ h
40 km/ h
50 km/ h mm1.0+0.90.80.70.60.50.40.30.2<0.1
Average Rainfall (mm)
Prevailing WindsW ind Frequency (Hrs)
Location: Mumbai, IND (18.9°, 72.8°)Date: 1st January - 31st DecemberTime: 00:00 - 24:00© Weather Tool
BUILDING PERFORMANCE ANALYSIS REPORT
9 SHEETAL SAGAR, MUMBAI Kaizen Design Solutions
HEAT ISLAND EFFECT:
Urban development has serious effects on the global environmental quality, including the quality of air, increase in
temperature and traffic congestion. Construction of building itself is related to global changes in terms of increase
of urban temperatures, the rate of energy consumption, the increased use of raw materials, pollution and the
production of waste, conversion of agricultural land to developed land, loss of biodiversity and water scarcity. An
urban heat island is a climatic phenomenon in which urban areas have higher air temperature than their rural
surroundings as a result of anthropogenic modifications of land surfaces, significant energy use and its consequent
generation of waste heat. Thus, this might prove to be an unsustainable factor that leads to excessive energy use
for cooling and putting the urban population at great risk for morbidity and mortality. According to the above
perspective and considering that rapid and huge population growth is expected in the near future, it becomes
increasingly important to apply heat island mitigation strategies in order to reduce energy consumption and
improve the quality of life.
Effects of Urban Heat Island
• Increased in cooling demand;
• Increased in energy usage;
• Increased air pollution;
• Increased CO2 emissions;
• Climate change;
• Increase health problems;
• Heat related illness & death;
• Impaired water quality
Absorption of solar radiation
During the day in rural areas, the solar energy absorbed near the ground evaporates water from the vegetation
and soil. Thus, while there is a net solar energy gain, this is compensated to some degree by evaporative cooling.
In urban development, where there is less vegetation, the buildings, streets and sidewalks absorb the majority of
solar energy input.
CONCLUSION -
From the results on the next page, it can be clearly seen that because of measures like Solar Panels on roof, Light
Coloured or Open Grid Pavers, Shaded Streets, Maximum Green Area etc. there is a considerable decrease of 78%
in the Surface Absorbed Radiation resulting is reduction of Cooling Loads.
BUILDING PERFORMANCE ANALYSIS REPORT
10 SHEETAL SAGAR, MUMBAI Kaizen Design Solutions
Case 1: The case has been assumed with all the proposed buildings with convectional finish on top, asphalt road and dark colored paving on site without any green space.
Case 2: The case has been proposed with light coloured road surface and paver blocks with green space in open area areas which is help to reduce urban air temperature in surroundings.
High SRI Paints Light Colored Paver Block Light Coloured & Shaded Roads Green Open Area
Case 1: The case has been assumed with all the proposed buildings with convectional finish on top, asphalt road and dark colored paving on site without any green space.
Case 2: The case has been proposed with light coloured road surface and paver blocks with green space in open area areas which is help to reduce urban air temperature in surroundings.
High SRI Paints Light Colored Paver Block Light Coloured & Shaded Roads Green Open Area
BUILDING PERFORMANCE ANALYSIS REPORT
11 SHEETAL SAGAR, MUMBAI Kaizen Design Solutions
SHADING & RADIATION:
Analysis of Window Shades on South Façade -
Human Sensitivity Effect Human Sensitivity Effect
Without Shades With Shades
False Colour Rendering False Colour Rendering
Without Shades With Shades
Lux Counter Diagram Lux Counter Diagram
Without Shades With Shades
All windows have been provided Shades of 750 mm depth. Above images explain the effectiveness of Shades. First
image shows that penetration of Direct Radiation is completely nullified. Second image confirms that Glare is
reduced & Visual Comfort is increased. Third image clarifies that daylight is Evenly Distributed in the space.
BUILDING PERFORMANCE ANALYSIS REPORT
12 SHEETAL SAGAR, MUMBAI Kaizen Design Solutions
Analysis of Incident Radiation on South & North Façade -
Incident Radiation on North East Facade Incident Radiation on North East Facade
Without Shades With Shades
Incident Radiation on South West Facade Incident Radiation on South West Facade
Without Shades With Shades
CONCLUSION -
The incident solar ingression has been analyzed for North East and South West façade, considering both the
surfaces are most critical during summer period. In case 1, analysis was carried out on both the facades without
shades. The same orientation is analyzed with overhangs of 750mm in Case 2. The North East façade and South
West façade are getting reduced incident radiation by 19% and 17% respectively.
BUILDING PERFORMANCE ANALYSIS REPORT
13 SHEETAL SAGAR, MUMBAI Kaizen Design Solutions
Following images also show that the windows are completely shaded in summer season blocking summer heat &
welcoming winter sun when it is required.
21ST
DECEMBER 1PM
21ST
MARCH 1PM
BUILDING PERFORMANCE ANALYSIS REPORT
14 SHEETAL SAGAR, MUMBAI Kaizen Design Solutions
RENEWABLE ENERGY:
Tenant Building 2
RETScreen Calculation
Solar tracking mode
Fixed
Slope
20
Azimuth
0
Solar Data
Photovoltaic
Type
poly - Si
Power Capacity kW 15
Manufacturer
DelSolar
Model
Poly - Si - D6P - 230W - B3 A
Number of Units
64
Efficiency % 14.10%
Nominal operating cell temperature
° C 45
Temperature coefficient % / ° C 0.4
Solar collector area m ² 104
Miscellaneous losses % 5%
Inverter
Efficiency % 85%
Capacity kW 7.4
Miscellaneous losses % 5%
Summary
Capacity Factor % 16.90%
Electricity export rate Electricity explored to Grid - annual
Electricity exported to grid MWh 18
RETScreen is widely used software for renewable energy calculations. The snap shot of the same is
provided here to understand the PV cell calculations in detail.
Considering the Sun Path of Mumbai city, it is recommended to install PV cells on south side at an angle
of 20 Degree facing South for maximum average efficiency round the year. The efficiency of the PV cell
is considered as 14% & inverter is 85%.
Considering all these factors & climate of Mumbai city (As per ISHRAE Weather File), it is calculated that,
solar PV of 22 KWp capacity will generate 27 MWh electricity annually For tenant Building 1. Similarly
solar PV of 15 KWp capacity will generate 18 MWh electricity annually For tenant Building 2.
BUILDING PERFORMANCE ANALYSIS REPORT
15 SHEETAL SAGAR, MUMBAI Kaizen Design Solutions
ENERGY ANALYSIS:
Proposed Sheetal Sagar Residential cum commercial
redevelopment project, Mumbai which lies in
western India. The total built-up area of residential
buildings is about 27,106.57 m2 distributed over a
large area along with club house facility & other
amenities. The overall Window to Wall Ratio is
approximately 25%.
A zoning plan was developed for each floor &
entered into the simulation model. Each zone was
assigned a set of properties including lighting power
density, equipment power density, occupancy rate,
outside air requirement etc. Each zone was also
assigned physical properties of floor-to-floor height,
material conductivity & fenestration area etc.
A baseline building as per the properties stated in
ECBC 2007 was modelled. The Building was
simulated with actual orientation and again after
rotating the entire Building by 90, 180 & 270
Degrees and then the annual energy consumption
results were averaged out to get the ECBC 2007
Baseline Building Energy consumption in kilowatt
hours. As per ECBC 2007, the average base case
energy consumption does not consider the effect of
building shades & overhangs.
A wide range of actual as-designed parameters such
as Envelope (roofs, walls), Windows (type of
window glass), Lighting (lighting power density),
reduced Exterior Lighting, efficient system design
were added to the Baseline case to simulate the
performance of the designed building.
The project has been modelled with the e-QUEST
energy analysis software that uses the DOE 2.2
Building energy simulation engine. The e-QUEST
energy modelling software allows for a graphical
display of all the 3-dimensional geometry entered in
the application to describe the building. As per the
view shown, the Building has been modelled in detail
to improve the accuracy of analysis work. The
project objective is to evaluate energy use and the
energy efficiency performance of the Building.
BUILDING PERFORMANCE ANALYSIS REPORT
16 SHEETAL SAGAR, MUMBAI Kaizen Design Solutions
TENANT BUILDING 1
BASELINE MODEL
The ECBC 2007 Minimally Compliant Baseline model
is used to benchmark the design case. This model
geometry is based upon the design case, but the
performance parameters listed below are defined to
reflect the minimum efficiency levels that ECBC 2007
defines for various building components.
These parameters are listed below.
Building Envelope
Exterior wall construction:
U-value – 0.44 W/Sq.m.K
Roof Construction:
U-value – 0.409 W/Sq.m.K
Window wall ratio: 25%.
Fenestration type:
U-Value : 3.3 W/Sq.m.K
SC (All) : 0.29
Shading Devices: None.
Lighting Equipment
Lighting Power Density is considered according
to building area method,
LPD : 0.70 W/sq.ft.
Air Side HVAC System
As per ANNEXURE-I all bedrooms and living
rooms are modelled as conditioned spaces with
unitary air conditioners assigned to each zone
with COP 3.0. Kitchen areas are modelled with
unit ventilators.
Based on above parameters. The average base-case
consumption is 1704 MWh.
The annual energy consumption for baseline case,
broken down by end-use shows that Lighting (27%)
and Equipment (27%) are the largest components
after HVAC (36%).
BUILDING PERFORMANCE ANALYSIS REPORT
17 SHEETAL SAGAR, MUMBAI Kaizen Design Solutions
PROPOSED CASE
Proposed case assumptions are based on project
drawings and operating parameters assumptions
based on experience and standards.
Building Envelope
Exterior wall construction : Mivan Wall
Construction with both side plaster.
U-Value : 2.27 W/Sq.m.K
Roof Construction : 6”RCC + 6” BB Coba + China
Mosaic Tile on top.
U-Value : 1.64 W/Sq.m.K
Window to wall ratio: 25%
Fenestration type:
Saint Gobain ST 167 Clear (SGU)
U-Value : 5.7 W/Sq.m.K
SC : 0.75
VLT : 65%
Shading Devices: As per Design.
Lighting Equipment
Lighting Power Density is considered according
to building area method,
LPD : 0.50 W/sq.ft.
Air Side HVAC System
As per ECBC 2007, all bedrooms and living rooms
are modelled as conditioned spaces with unitary
air conditioners assigned to each zone with COP
3.0. Kitchen areas are modelled with unit
ventilators.
Utility Rates -
Energy charge : 5/kWh
The annual energy consumption for proposed case,
broken down by end-use shows that Interior Lighting
(22%) and Miscellaneous Equipment (28%) are the
largest after HVAC (40%).
Based on above parameters, the project saves
1.06% savings over baseline.
BUILDING PERFORMANCE ANALYSIS REPORT
18 SHEETAL SAGAR, MUMBAI Kaizen Design Solutions
SUMMARY
The Proposed case model shows significant savings
in internal lighting as well as space cooling energy
consumption as compared with the ECBC 2007
stipulated baseline model. These energy reductions
can primarily be attributed to improved lighting
power density and reduction in cooling loads due to
improved envelope and glazing specifications.
For the purposes of determining energy savings in
rupees, the energy costs for the proposed case
model are compared to the energy costs for the
ECBC 2007 minimally-compliant model.
Based on the final design considerations for building
envelope and equipment, it is noted from the results
of energy simulation that by using efficient envelope
and lighting, the total annual energy required for
Proposed Residential cum commercial
redevelopment project, Mumbai for tenant building
1 is 1686 MWh. The energy required for the baseline
model is simulated to be 1704 MWh. The total
energy cost saving is 1.06%.
With current proposed case, the project is saving
upto 1.06% in energy over ECBC base case & will be
able to save 18 MWh annually.
BUILDING PERFORMANCE ANALYSIS REPORT
19 SHEETAL SAGAR, MUMBAI Kaizen Design Solutions
TENANT BUILDING 2
BASELINE MODEL
The ECBC 2007 Minimally Compliant Baseline model
is used to benchmark the design case. This model
geometry is based upon the design case, but the
performance parameters listed below are defined to
reflect the minimum efficiency levels that ECBC 2007
defines for various building components.
These parameters are listed below.
Building Envelope
Exterior wall construction:
U-value – 0.44 W/Sq.m.K
Roof Construction:
U-value – 0.409 W/Sq.m.K
Window wall ratio: 25%.
Fenestration type:
U-Value : 3.3 W/Sq.m.K
SC (All) : 0.29
Shading Devices: None.
Lighting Equipment
Lighting Power Density is considered according
to building area method,
LPD : 0.70 W/sq.ft.
Air Side HVAC System
As per ANNEXURE-I all bedrooms and living
rooms are modelled as conditioned spaces with
unitary air conditioners assigned to each zone
with COP 3.0. Kitchen areas are modelled with
unit ventilators.
Based on above parameters, The average base-case
consumption is 1271 MWh.
The annual energy consumption for baseline case,
broken down by end-use shows that Lighting (27%)
and Equipment (27%) are the largest components
after HVAC (37%).
BUILDING PERFORMANCE ANALYSIS REPORT
20 SHEETAL SAGAR, MUMBAI Kaizen Design Solutions
PROPOSED CASE
Proposed case assumptions are based on project
drawings and operating parameters assumptions
based on experience and standards.
Building Envelope
Exterior wall construction : 8” External Wall with
AAC Blocks
U-Value : 0.56 W/Sq.m.K
Roof Construction : 6”RCC + 2” XPS Insulation
U-Value : 0.404 W/Sq.m.K
Window to wall ratio: 25%
Fenestration type:
Saint Gobain ST 150 Clear (SGU)
U-Value : 5.7 W/Sq.m.K
SC : 0.62
VLT : 51%
Shading Devices: As per Design.
Lighting Equipment
Lighting Power Density is considered according
to building area method,
LPD : 0.50 W/sq.ft.
Air Side HVAC System
As per ECBC 2007, all bedrooms and living rooms
are modelled as conditioned spaces with unitary
air conditioners assigned to each zone with COP
3.0. Kitchen areas are modelled with unit
ventilators.
Utility Rates -
Energy charge : 5/kWh
The annual energy consumption for proposed case,
broken down by end-use shows that Interior Lighting
(22%) and Miscellaneous Equipment (28%) are the
largest after HVAC (40%).
Based on above parameters, the project saves
3.30% savings over baseline.
BUILDING PERFORMANCE ANALYSIS REPORT
21 SHEETAL SAGAR, MUMBAI Kaizen Design Solutions
SUMMARY
The Proposed case model shows significant savings in
internal lighting as well as space cooling energy
consumption as compared with the ECBC 2007 stipulated
baseline model. These energy reductions can primarily be
attributed to improved lighting power density and
reduction in cooling loads due to improved envelope and
glazing specifications.
For the purposes of determining energy savings in
rupees, the energy costs for the proposed case model are
compared to the energy costs for the ECBC 2007
minimally-compliant model.
Based on the final design considerations for building
envelope and equipment, it is noted from the results of
energy simulation that by using efficient envelope and
lighting, the total annual energy required for Proposed
Residential cum commercial redevelopment project,
Mumbai for tenant building 2 is 1229 MWh. The energy
required for the baseline model is simulated to be 1271
MWh. The total energy cost saving is 3.30%.
With current proposed case, the project is saving upto
3.30% in energy over ECBC base case & will be able to save
42 MWh annually.
In addition to this, if we consider Solar PV generation from
15 kW, which is 18 MWh, the final saving will rise to
4.70%.
BUILDING PERFORMANCE ANALYSIS REPORT
22 SHEETAL SAGAR, MUMBAI Kaizen Design Solutions
APPENDIX I WEATHER DATA:
Sun Path, Avg. Monthly Temperature & Solar Radiation -
Sun Path Diagram for Mumbai
Design Temperature for Mumbai
BUILDING PERFORMANCE ANALYSIS REPORT
23 SHEETAL SAGAR, MUMBAI Kaizen Design Solutions
APPENDIX II Detailed comparison between Base case & Proposed case:
S.NO. Model Input Parameter
Baseline Case (As per ECBC 2007)
Proposed Case
1. Exterior Wall Construction
U-factor = 0.44 W/Sq.m.K
6” Miwan wall construction U-factor = 2.27 W/Sq.m.K (Tenant Building 1) 8” External Wall with AAC Blocks U-factor = 0.56 W/Sq.m.K (Tenant Building 2)
2. Roof Construction U-factor = 0. 409 W/Sq.m.K Insulation entirely above deck.
6” RCC slab + 6”BB Coba With Chaina Mosaic Tile U-factor = 1.64 W/Sq.m.K (Tenant Building 1) 6” RCC slab with 2”XPS Insulation U-factor = 0. 404 W/Sq.m.K (Tenant Building 2)
3. Glazing
U Value: 3.3 W/Sq.m.K
SC (All) : 0.29
For Fenestration Assembly
U Value : 5.7 W/Sq.m.K
SC : 0.62, 0.75 (For Existing Building)
VLT : 51%, 65% (For Existing Building)
4. WWR 25% 25%
5. Shading No shades Shading effect of solar panel on roof and shading
devices on all façade is considered.
6. Equipment Power Density
1.5 W/ft
2
1.5 W/ft
2
7. Pumps & Motors High Efficiency – 70% High Efficiency – 85%
8. Lighting Power Density
0.70 W/ft
2
0.50 W/ft
2
9. External Lighting Load
9.30 kW (Tenant Building 1)
11.40 kW (Tenant Building 2)
6.5 kW (Tenant Building 1)
8.0 kW (Tenant Building 2)
10. Domestic Hot Water Generation
20% on Solar Electric
11. HVAC System Type Packaged Single Zone
(Split Unit)
Packaged Single Zone (Split Unit)
12. Coefficient of Performance
3.0 3.0
13. Ventilation Requirement ( ACPH As per NBC )
Living 4, Kitchen 5, Bedroom 3.
Living 4, Kitchen 5, Bedroom 3.
14. Domestic Hot Water Consumption
15 ltrs/person/day 15 ltrs/person/day
15. Process Loads
456 kW (Tenant Building 1)
436 kW (Tenant Building 2)
456 kW (Tenant Building 1)
436 kW (Tenant Building 2)
BUILDING PERFORMANCE ANALYSIS REPORT
24 SHEETAL SAGAR, MUMBAI Kaizen Design Solutions
APPENDIX III Schedules Used for calculations –
0%
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Typical Occupancy Schedule for Living room, Dining room & Kitchen
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Typical Occupancy Schedule for Bedrooms
BUILDING PERFORMANCE ANALYSIS REPORT
25 SHEETAL SAGAR, MUMBAI Kaizen Design Solutions
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Typical Lighting Schedule for Living room, Dining room & Kitchen
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Typical Lighting Schedule for Bedrooms
BUILDING PERFORMANCE ANALYSIS REPORT
26 SHEETAL SAGAR, MUMBAI Kaizen Design Solutions
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Typical Equipment Schedule for Living room, Dining room & Kitchen
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Typical Equipment Schedule for Bedroom
BUILDING PERFORMANCE ANALYSIS REPORT
27 SHEETAL SAGAR, MUMBAI Kaizen Design Solutions
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Typical Cooling Schedule for Living room & Dining room
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Typical Cooling Schedule for Bedroom
ON
OFF
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BUILDING PERFORMANCE ANALYSIS REPORT
28 SHEETAL SAGAR, MUMBAI Kaizen Design Solutions
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Typical Exterior Lighting Schedule
APPENDIX IV
Solar PV Cutsheet –
BUILDING PERFORMANCE ANALYSIS REPORT
29 SHEETAL SAGAR, MUMBAI Kaizen Design Solutions
Peak Condition - 25 October 3 pm
Sr.
No.Description
Heat Gain in kW
Base Case
Sensible + Latent
Heat Gain in kW
Proposed Case
Sensible + Latent
1 Wall Conduction (S) 34 44
2 Roof Conduction (S) 2 2
3 Glass Conduction (S) 57 63
4 Glass Solar (S) 74 81
5 Lights to Space (S) 32 19
6 Equipments to Space (S) 47 47
7 Occupants to Space (S+L) 43 43
8 Infiltration (S+L) 62 62
9 Total Load 351 362
10 % Increase 3.01
APPENDIX V
Heat Gain Calculation – Building Peak Load Components - LS-C Report, has been analysed here. The building heat gain
comparison between base case & proposed case is as follows. It is clearly observed from the
table below that, for a naturally ventilated residential building, Envelope Shading is also an
effective strategy along with insulation. Though the Base case (With Insulation – Without
Shading) still has a lesser heat gain as compared to Proposed case (Without Insulation – With
Shading), but the difference is marginal & can be easily compensated by reducing lighting &
Equipment consumptions. This is possible mainly because Reduced Sol Air Temp & Shaded
Walls, Windows & Roof.
BUILDING PERFORMANCE ANALYSIS REPORT
30 SHEETAL SAGAR, MUMBAI Kaizen Design Solutions
APPENDIX VI
Air Conditioning – LG Product Cut sheet -
APPENDIX VII
Efficient Motors –
BUILDING PERFORMANCE ANALYSIS REPORT
SHEETAL SAGAR BUILDERS & DEVELOPERS PVT. LTD
End use Electricity consumption - 13 kWh / sq.ft / yr
Energy Performance Index (EPI) - Towards High performance EPI - kWh / sq.ft. / Yr.
Energy / Carbon Footprint Analysis
Annual Energy Projection for the Baseline office building - 3,613 MWh approx. for 2,77,918 sq.ft. area. GHG emissions from annual energy consumption, GHG emission factor – India 0.9 tCO2/MWh Annual GHG emissions for baseline = 3,252 tCO2
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tim
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Horizontal Roof North-West Facade
North-East Facade
South-West Facade
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Wh/sqm
month of year
EPI - 12.77 kWh / sq.ft. / Yr. Energy Consumption = 3,549 MWh GHG Emissions = 3,194 tCO2
Building Form & Shading
Special Design Features – Effective Shading Double Skin Façade Optimum WWR
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Efficient Envelope
EPI - 12.41 kWh / sq.ft. / Yr. Energy Consumption = 3,449 MWh GHG Emissions = 3,104 tCO2
Wall insulation. Double Wall - 8” AAC wall + Air Gap + External Facade ‘U’ Value – 0. 471 W/Sq.m.K Roof insulation. 2” XPS Roof insulation entirely above deck, ‘U’ Value – 0. 404 W/Sq.m.K High performance fenestration. ‘U’ Value - 5.7 W/Sq.m.K S.C. - 0.62 V.L.T. - 51 %
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Daylight Design
EPI - 11.07 kWh / sq.ft. / Yr. Energy Consumption = 3,077 MWh GHG Emissions = 2,769 tCO2
Light Shelves shade Vision Glazing.
Provide Natural Daylight to Interiors.
Work efficiently even on Cloudy Days.
Daylight not at cost of Thermal Gains.
Reaches darker interiors.
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Efficient Lighting Systems
EPI - 10.20 kWh / sq.ft. / Yr. Energy Consumption = 2,835 MWh GHG Emissions = 2,551 tCO2
Lower lighting power density. LPD - 0.8 W / sq.ft. Daylight sensors in building perimeter areas. Occupancy sensors recommended in non regularly Occupied areas e.g. store, stairs, corridors, service areas etc. Use of Light shelves. For uniform & glare free distribution of natural light.
Space Cooling
EPI - 10.17 kWh / sq.ft. / Yr. Energy Consumption = 2,826 MWh GHG Emissions = 2,544 tCO2
Efficient Air-conditioning 5 Star split system COP more than 3.5 Less Noise equipment
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Basement Ventilation
EPI - 10.11 kWh / sq.ft. / Yr. Energy Consumption = 2,810MWh GHG Emissions = 2,529 tCO2
Use of CO Sensors Jet Fan Ventilation Less Fan Energy Effective Ventilation
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External Lighting Applications
EPI - 9.92 kWh / sq.ft. / Yr. Energy Consumption = 2,757 MWh GHG Emissions = 2481 tCO2
Reducing external lighting load. Reduce façade lighting. Signage systems with LED’s. Use of timers & sensors. Use of efficient luminaries.
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Solar PV
EPI - 9.65 kWh / sq.ft. / Yr. Energy Consumption = 2,682 MWh GHG Emissions = 2414 tCO2
RETScreen is a widely used software for
renewable energy calculations. Considering
the Sun Path of Mumbai city, it is
recommended to install PV cells on south
side at an angle of 20 Degree facing South for
maximum average efficiency round the year.
It is calculated that, solar panels of 45 kWp
capacity will generate around 175 KWh per
day electricity annually.
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Energy Savings
EPI - 9.65 kWh / sq.ft. / Yr. Energy Consumption = 2,682 MWh GHG Emissions = 2,414 tCO2
EPI - 13.0 kWh / sq.ft. / Yr. Energy Consumption = 3,613 MWh GHG Emissions = 3,252 tCO2
Sola
r Shadin
g
Daylight
Harv
esting
Natu
ral
Ventila
tion
Desig
ned
Lig
hting
Effic
ient
HVAC s
yste
m
Basem
ent
Ventila
tion
Sta
ndard
Perf
orm
ance
Sola
r Photo
voltaic
Inte
rnal
Loads
Exte
rnal
Loads
Ventila
tion
Loads
Standard Performance
Efficient Design
26% Reduction Over Conventional Case 12% Reduction Over ECBC Case
ECBC Performance
Building Design Parameters
Sr.No. Model Input Parameter Baseline Case as per
Conventional Design
Baseline Case as per
ECBC Parameters Proposed Case
1. Exterior Wall
Construction
U factor =
1.873 W/Sq.m.K
U factor =
0.440 W/Sq.m.K
U factor =
0. 471 W/Sq.m.K
2. Roof Construction U factor =
2.271 W/Sq.m.K
U factor =
0.409 W/Sq.m.K
U factor =
0. 404 W/Sq.m.K
3. Glazing
U Value : 5.7 W/Sq.m.K SC : 0.70 VLT : n/a
U Value : 5.7 W/Sq.m.K SC : 0.29 VLT : n/a
U Value : 5.7 W/Sq.m.K SC : 0.62 VLT : 51%
4. Wall Window Ratio 38 % 38 % 38%
5. Shading Devices Not Considered Not Considered As per Design
6. Lighting Power Density As per Building Area Method.
LPD : 2 W/ ft2
As per Building Area Method.
LPD : 1 W/ ft2
As per Building Area Method.
LPD : 0.8 W/ ft2
7. Occupancy Sensors Not Required Not Required Recommended in Non-Regularly
Occupied Areas
8. Daylight Sensors Not Required Not Required Recommended in building perimeter
habitable Areas
9. Ext. Lighting Efficacy 100 Lumen / W Efficacy 60 Lumen / W Efficacy 50 Lumen / W
10. Chiller Parameter VRV System Design, COP 3.5 Water Cooled Centrifugal Chillers,
COP 5.4 Split Air-conditioning, COP 4.0
11. VSD’s on Chiller Not Applicable Not Applicable Not Applicable
12. Chilled Water Min.
Supply Temp Not Applicable 440F, ∆T = 120F Not Applicable
13. VFD’s on Cooling Tower Air Cooled System Not Required Not Applicable
14. Condenser Water Min.
Supply Temp Not Applicable 880F, Approach - 50F Not Applicable
15. Primary, Fire, Condenser
Pump Class Standard – 60% Standard – 60% Premium – 75%
Building Design Parameters
Sr.No. Model Input Parameter Baseline Case as per
Conventional Design
Baseline Case as per
ECBC Parameters Proposed Case
16. Primary, Fire,
Condenser Motor Class Standard – 70% Standard – 70% Premium – 85%
17. HVAC System VRV System Variable Air Volume System with reheat
Not Applicable
18. Heat Recovery Wheel Not Required Not Required Not Applicable
19. CO Sensors Not Applicable Not Required Recommended
20. Solar Hot Water Not Required No Hot Water Requirement No Hot Water Requirement
21. Renewable Energy Not Considered Not Required 45 kWp Proposed
22. Data Server Loads
Not Applicable Not Applicable Not Applicable
23. Process Load & EPD As per Design As per Design As per Design
24. Project EPI 13.06 kWh / Sq.ft. 10.94 kWh / Sq.ft. 9.65 kWh / Sq.ft. 25. % Savings 26.11% 11.79% -
Based on above Design & System Parameters, the project is anticipated to save 26% over the Conventional base case & 12% over ECBC 2007.
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