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7/27/2019 Larsen Toubro Pel Dept Powai http://slidepdf.com/reader/full/larsen-toubro-pel-dept-powai 1/34 LARSEN & TOUBRO Presentation for the Energy Efficiency Award 2012 CII , Hyderabad
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LARSEN & TOUBRO

Presentation for the

Energy Efficiency Award 2012

CII , Hyderabad

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OUTLINE

1   • Profile in

 brief 

 

2   • ENCON  – Evaluation & Details

3   • Benchmark & future roadmap

4   • Green Initiatives

5   • ENCON Management

6   • Awards & Accolades

• Summary7

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Profile

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Diversified Engineering Business

ECC E&C Projects HEIC Power  

EAIC MIPD Infotech

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NB – II Profile

Year of  Built 2007

Gross Floor Area, 

Sq.Mtrs.   21261

Installed Trafo. 

Capacity, kVA

  3200

Connected Load, kW 2126

Air‐Conditioning

 

Plant Capacity, TR  834

Occupants 1500

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Energy Consumption Pattern 

19%

8%

21%

51%

1%

Power Lighting UPS AC Lift

2009‐10 2010

‐11 2011

‐12

29.26

29.58

27.75

Annual Lac KWH for NB‐II

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ENCON –

Evaluation & Details

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Sr.

No.

Title of  Energy Saving  project 

implemented during last 3 years

Annual Electrical Savings

achieved

  Invest. 

Made  Payback

YearsUnits  Rs  Rs 

1  Switching

 off 

 of 

 Primary

 Pump

 on

 AC

 

System  26460 174636 0 0

2  Replaced Secondary pump with reduced 

Capacity  90080 594528 74000 0.12

3   4 nos. of  VFDs for AHUs 38740 255684 175000 0.68

4 Modification to ducting  312000 2012400 1500000 0.75

5 16 nos.

 of 

 2X11W

 CFL

 light

 fittings

 8223 61015 73600 1.21

6 15TR Precision AC during night loads   121200 899304 1400000 1.56

7  1799 nos T5 3X14W light fittings  276111 1814051 3877100 2.14

8 29 nos. of  12W LED lights  6090 45188 99180 2.19

9   200 nos. Occupancy Sensors  60000 387000 1000000 2.58

10   1290 nos. 6W LED light fittings  83850 540833 3483000 6.44

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ENCON Financials

0

10

20

30

40

2009‐

10 2010‐

11 2011‐

12

38.83

17.7311.29

Savings in

 Lac

 Rs.

 p.a.

0

20

40

60

80

2009‐

10 2010‐

11 2011‐

12

76.78

21.52   18.52

Investment in

 Lac

 Rs.

0

1

2

2009‐10 2010

‐11 2011

‐12

1.98

1.211.64

Payback in years

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Summary of  ENCON financials

Investment 

Rs. 116.82 

Lacs

Savings

Rs. 67.85 Lacs

Payback

1.72 years

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ENCON in Lighting

LED Lights

3x14W T5 Lights

Occupancy 

Sensors

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ENCON in Air‐conditioning system

VFD

BMS

Duct 

Modification

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Other ENCON Measures

CFL 

Street 

Lights EMS

Timers

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Energy saving project

Existing system : ‐ Water cooled Precision AC

Avg consumption on a

working day  : 600 kWh

Avg consumption on a 

holiday  : 500 kWh

Hence, 

Annual Consumption

 is

 

:  213000 kWh

New system : ‐ Air cooled Precision AC

Avg consumption on a working day 

(15 TR X 1.2kW X 12 hrs) : 216 kWh

Avg consumption on a holiday 

( 15 TR X 1.2kW X 24 hrs) : 432 kWh

Hence, 

Annual Consumption

 is

 

: 91800 kWh

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Thus, annual

 savings

 come

 up

 to

 : 1,21,200

 kWh

Annual Savings in Rs.  : 9,09,000/‐

Total Investment in Rs.  :  14,00,000/‐

Hence,  Payback period is  : 1.5 years

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Reporting the completion of  planned ENCON measures

Sr.No EC Activity

 planned   Investment

 in Lac Rs.

Annual Savings Status

Units Rs in Lacs

1  Replacement of  staircase 

emergency 2X18 W light fittings by

9W LED

 light

 fittings

  0.96 6832 0.52 Completed

2  Replacement of  150W MH st light 

fittings by 22 W CFL light fittings  0.9 8611 0.64 Completed

3Voltage

 reduction

 of 

 Electromiser

from 210V to 200V for lighting 

control.

Nil 25000 1.87 Completed

4  Stopping of  central AC plant after 

office hours

  Nil   90000 6.75 Completed

5 Removal of  2 X 160KVA main UPS 2.5   55000 4.12 In process

6   Provision 

of  

easy 

access 

to 

staircase to optimize usage of  lifts   1800 0.13

Dropped 

due to civil

 

constraints

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Benchmark &

future roadmap

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Benchmark ‐ BEE StandardsClimatic Zone ‐ Warm and Humid

EPI (Kwh/sqm/year)

  Star Label

200‐175 1

 Star

175‐150 2 Star

150‐125 3 Star

125‐100 4

 Star

Below 100 5 Star

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Energy Performance Index

125

130

135

140

145

150

2009‐

10 2010‐

11 2011‐

12

147.34

137.68

134.08

Reduction in EPI by 

9% over

 last

 3 years

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Yesterday

147

Today

134

130 

by 2013

125 

by 2015

Our Objective  ‐ EPI by 2015

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EC Plan for 2012

•   Study of  building envelope for heat calculations

‐ Use of  heat retardant paints

‐ Arresting AC leakages

‐ Thermography

•   Heat recovery wheel for Auditorium

•   Feasibility study of  Solar PV system on terrace 

of  the

 building.

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Making NB-II

a GREEN Building

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•   Supplier = M/s. Enercon India

•   Installed Capacity = 9.0 MW

•   Location = 

Satara, Maharashtra

  Agreed 

Supply 

150Lac 

Units 

per annum

•   5% concession in Utility bill

FY  Wind Energy 

(Lac kWh)

%

E

 Green 

nergy

2008‐09   21.48 63.82

2009‐10 14.11 48.26

2010‐11 14.79 51.30

2011‐12 18.28 65.87

Green Energy at NB‐II

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GREEN initiatives at NB‐II

  Use of 

 manure

 generated

 from

 Bio

‐gas

 plant

 for

 gardening

 &

 horticulture activities

•   Sewage Treatment Plant  – Zero water Discharge

•   SANKALP notepads made out of  one‐side used papers

•   Indoor air quality monitoring carried out.

•   LEED Certification process for prestigious Green Gold Rating  ‐

Documents submitted.

•   Exploring GREENCO rating ( developed by CII ) for Powai

Campus .

•   Exclusive carbon

 foot

 print

 mapping

 of 

 NB

‐II

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ENCON Management

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“Energy Expo 2011” at NB‐II 

R hi t t S i t f ENCON

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Reaching out to Society for ENCON awareness 

Prizes distribution by Mr.Rajdeep Gupta to Students

EC Awareness talk conducted at Municipal School

Mrs. Preeti Shah from PCRA delevering lecture 

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Awards

&

Accolades

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Let’s Summarise….

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•   Investment of  116 Lac Rs. to achieve 68 Lac Rs. of  

recurring savings 

•   Energy Performance

 Index

 improved

 from

 147

 to

 134

  Objective 

5‐

STAR 

rating 

for 

the 

building

•   “LEED” Certification  & “GRRENCO” rating

•   Energy Conservation  – A Management Objective

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