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Mr RAMESH SANKA MD (RENTCO), DLF LIMITED

FUTURISTIC GREEN HABITATS &

TECHNOLOGIES

By

Every Crisis has an Opportunity !!!

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ISSUES FACED BY BUILDING OWNER/DEVELOPER

1) Customers/Tenants want electricity 24 X 7 basis

2) Changeover from Grid to DG / DG to Grid causes temperature fluctuations in the Air

conditioned Area

3) Diesel Generators create smoke & pollution. A lot of heat /energy is wasted.

4) Quality of Power Supplied by Grid ?

5) Waste water to be recycled .

One Solution for all these

Energy Center (Distributed Gas based Cogeneration system)

DLF ADOPTION: PIONEERING DISTRIBUTED

CO-GENERATION TECHNOLOGY

Energy Center consists of Gas based co-generation plant comprising of multiple gas

turbines and gas engines along with Vapour Aborption machines

Generates electricity as well as uses the waste gases of the power generating

equipments in vapour absorption machines (VAMs) for generation of chilled water for air

conditioning of buildings.

Known as Distributed power plants because these are setup very near the

consumption centers as against the conventional system of transmitting power for hundreds

of KMs from bigger power plants.

Air compressor Combustor Turbines/engines

and alternator Compressed

air Gas—air mix Electricity

Electricity to

Building

Air

Gas

Waste

hot g

as

Vapour Absorption

Machine

Chilled water supplied to

Building

Transformers

Schematic Diagram

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5

Infinity Tower, Gurgaon 1

Building 10, Cyber city, Gurgaon 3

Capacity: 10 MW

1.4 MW* 7 (GEGs)

Operational since: April-06

Capacity: 40 MW

4MW *5 (GEGs) & 5MW

*4 (GTGs)

Operational since: Dec 09

Silokhera SEZ, Gurgaon 5

Capacity: 17 MW

5MW *1 (DFEs) &

4MW *3 (GEGs)

Operational since: Aug-10

Building 8, Cyber city, Gurgaon 2

Capacity: 6 MW

1.4 MW*4 (GEGs)

Operational since: Aug-07

Building 5, Cyber city, Gurgaon 4

Capacity: 40 MW

4MW *5 (GEGs) & 5MW *4

(GTGs)

Operational since: Sep-10

VK Mall, New Delhi 6

Capacity: 4.2 MW

1.4 MW *3 (GEGs)

Operational since: June-08

TOTAL = 121 MW

( COMMISSIONED & OPERATIONAL PROJECTS)

COGENERATION PORTFOLIO

Saket Mall, New Delhi 7

Capacity: 4.2 MW

1.4 MW *3 (GEGs)

Operational since: Aug- 08

9.8 5.6 8.4

40

57 120.8

0

20

40

60

80

100

120

140

FY 06-07 FY 07-08 FY 08-09 FY 09-10 FY 10-11 TOTAL

ENERGY CENTER- KEY FEATURES

Energy Center has state of art “energy management system” to deal with complex

generation/distribution network and ensures continuous and uninterrupted power.

District Cooling concept adopted to supply chilled water for Air Conditioning from

centralized energy centers to neighboring buildings spread across a distance of 3 KM.

Entire network of Chilled Water pipelines and HT cables are physically protected with

adequate safe guards

Natural gas used as green fuel which is safe with auto ignition temp of 482°c and is

lighter than air

NOx EMISSION < 100 PPM

Sound level at 1 m distance from equipment < 85 db

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KEY ADVANTAGES OF Green Energy Centers

a) Avoids use of Ozone depletor CFC s

Use of Vapour absorption machines instead of electrical chiller using CFCs

b) Uses 100% Recycled waste water by Sewerage Treatment Plant :

Feasible due to centralized Energy centers

c) Reduction in per sft energy consumption due to centralized generation and distribution.

Running of Electrical Chillers in each of the recipient buildings at suboptimum capacity is avoided

especially when only some tenants operate on 24 X 7 basis.

d) Environmental friendly Green project: Eligible for availing carbon credit benefits at UNFCCC

DLF Silokhera Energy center registered at UNFCCC for availing carbon credits (CERs) for using gas

based efficient environment friendly technology.

e) Helps to avoid national wastage of Energy/Fuel resources.

Innovative Novel concept of environmental friendliness by having decentralized distributed

cogeneration plants near the load centers. ( Huge T&D Losses avoided)

f) Better disaster recovery plan and protected against any strikes, bandhs etc

Capability to generate electricity and chilled water for air conditioning both on Gas and HSD.

Provided uninterrupted continuous 24/7 electricity even during the Northern grid failure

in July 2012.

g) Frequent start & shutdown of machines, appliances, devices avoided:

Life expectancy of various equipments, appliances ,devices installed in the DLF commercial

buildings is better due to continuous, reliable and steady and high quality power from Energy

centers.

KEY ADVANTAGES OF Green Energy Centers

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h) Lower Emission intensity ( t CO2/Square meter/Year) compared to other Commercial

buildings.

Based on the study done by M/s PWC and benchmarking DLF Infinity Towers & DLF Building -8

with other conditioned buildings covered under ECO-III project ( Study of more than 760

commercial buildings done by USAID & BEE), the following analysis is concluded.

a. b. c. d. e. f.

Type Project EPI (kWh/square

metre/ hr)

No of average operating

hrs*

Emission Factor

Emissions Intensity (c*d*e) t CO2/

square metre/year)

Current Practice

ECO III Project for conditioned buildings 0.0585 6490 0.798 0.303

Reporting boundary

DLF Infinity Towers 0.213

Current Practice

ECO III Project for conditioned buildings 0.0585 4440 0.798 0.207

Reporting boundary

DLF Building 8 0.103

30%

Less

50%

Less

Conclusion: DLF Commercial Buildings having Energy Centers have significantly lower Emission

intensity compared to other Commercial Buildings.

KEY ADVANTAGES OF Green Energy Centers

National award for Excellence in Energy Management by CII. Recognised as “ INNOVATIVE

PROJECT”

IEEMA Award 2009 : For “ Excellence in Distributed generation”

ENERTIA Award for sustainable energy : For “ Decentralised Energy – CCHP Project”

Awards received for Excellence in

Distributed generation & Energy Efficiency

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DLF’s Solar Initiative : The ROOF TOP WAY

1. DLF has engaged two renowned solar power

companies to utilize the vacant rooftop of its

commercial buildings across India to install

Solar Rooftop PV Projects.

2. The CUMULATIVE CAPACITY will be 3 MW

and it would generate about 4.2 mn units in a

year.

3. The Solar green energy will add to our efforts

to make our buildings environmental friendly.

4. Till date ALREADY COMMISSIONED 250 KW

of capacity. Balance shall be completed in

next 10 months.

Solar Rooftop PV Project installed at Building 10

Tower B

DLF’s Other Green Building initiatives

1. Rainwater harvesting -- Water table has increased by 3 meters in last 1 year in

Cybercity Gurgaon.

2. Use of high performance reflective glass in buildings

3. Use of green materials like fly ash in construction

4. Heat insulated roof treatment while executing projects

5. Sky walks and pathways connecting the buildings for reduction in carbon footprint

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DLF’s Rapid Metro Project

1. Fully elevated metro rail system for Mass transit and reduction in carbon footprint.

2. First Private Sector development in the world to connect metro with offices.

3. Rapid metro with stations encircling the Cybercity Offices development.

4. Seamless connection to DLF Cybercity, Gurgaon offices from the Delhi Metro.

THANKS