Innovative Technologies in Building Projects Developers ...€¦ · • Make in India • Power for...

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Sensitivity: LNT Construction Internal Use

Innovative Technologies in Building Projects

– Developers Perspective



Government flagship programs

• 100 Smart Cities Mission,

• Housing for All by 2022

• Make in India

• Power for All

Growth Drivers for Construction Business in India



• Developmental activities in Amaravati, AP.

• Airports: Expansions of Existing Airport Terminals

– HIAL, BIAL, DIAL

• Special projects: Statue of Unity, Chatrapathi

Shivaji Maharaj Memorial Statue, Ambedkar

Statue, etc.,

• Hospitals: Construction of Hospitals & Medical

College campus – AIIMS, Odisha Medical Colleges,

JIPMER, NEIGHRIMS, etc.,

Growth Drivers for L&T Construction in India

Landmark Projects in Construction:



Future of Green Buildings

IGBC Projects:

Green Footprint -640 Crore

Sq.Ft

4700 Registered/Certified Projects

2018

By 20227000

Registered/Certified Projects

Green Building Footprint – 1000

Crore Sq.Ft

@ 100 Crore Sq.Ftevery Year



Green Buildings of L&T

Completed Projects Ongoing Projects

LEED India projects are also included in the LEED List



Building Design Optimization

for Special Projects



Fully shaded area

during December

all over the day.

Shading Analysis

Building Design Optimization – GCA, Motera

The 30yard circle is getting shaded after 6pm during Feb to Sep, and for wintershaded till 9am & after 4.30pm.



Building Design Optimization – Statue of Unity

Zone 1

Zone 2

N

711 Average Lux Level with Overcast sky Condition –

Statue of Unity

24 no’s Skylight

(0.9m radius)

Daylight Analysis



WW

R O

ptim

izatio

nBuilding Design Optimization

WWR reduced from 66%to 30%

Description Initial Arch design 30% WWR

Glass

WWR 66% 30%

Cooling Load 225 TR 196 TR

Savings Baseline 13%

Sola

r In

sola

tion

Analy

sis

More Glassing advisable

Restrict Glass/Opening



Energy Optimization



Room conditions

26-280C / ≤ 70% & 300 lux

Room conditions

23-260C / ≤ 60% & 300 lux

Building energy index

60 - 90 kWh/m2-yr


140 kWh/m2-yr

Challenges in building design

Room conditions

26-280C / ≤ 70% & 300 lux


30 kWh/m2-yr – From grid

30 kWh/m2-yr – Through

Renewable

Energy Optimization



See through Type PV Module:

Courtesy:

Buildings that Self Sustain out of Solar Power



Building Integrated Micro-Wind Turbine

The wind turbines could be installed in the

building in the following areas

• on the rooftop;

• between two adjacent buildings;

• inside a hole within a building that is

specially designed for this purpose



Future POWER – Fuel Cells

• A fuel cell is an electrochemical

cell that converts the chemical

energy from a fuel into

electricity.

• The energy efficiency of a fuel

cell is generally between 40–60%



Future Power– Fuel Cells

SOFC for commercial, Sakuya Konohana Kan,Japan SOFC in ORIST by Hitachi Zosen Corporation

Source : http://www.nedo.go.jp



Typical office space

Set Point temperature • Baseline 23 °C

• Option 1: Average DBT

• Option 2: Running mean temperature

Comfort analysis Energy analysis

Cradle

Sc-STREAM

Design

builder

Outputs

Temp

PMV-PPD

Energy

Air flow

21

22

23

24

25

26

27

Basecase Case 1 Case 2 Case 3

Tem

p (°C

)

Climate Responsive Cooling Set Point



Climate Responsive Cooling Set Point



Integrating Outdoor/Indoor Environments

HardscapeEnergy

efficiency

CampusComparative

studyIndoor

LandscapeOutdoor

- Thermal Comfort/Energy Optimization

The research involves study of

different forms of landscaping &

its impact on

• Temperature,

• air flow,

• solar gains

• energy consumption of campus

building.



Integrating Outdoor/Indoor Environments- Thermal Comfort/Energy Optimization

Indoor – Cooling Energy

1.5

3

4.5

6

5 10 15 20

No. of years

Temperature Rise

32.26 41.9425 year periodCooling

energy

EPI

(kWh/m2)

Hardscape

29.70 32.67to

Landscape

Total savings expected in cooling energy over a period

of 25 years is approximately around 22%.

Conservatively 5 ˚C

temperature rise has been

considered for calculating

energy over 25 years.



Air temperature

Air temp

(0C)Case 1 Case 2

Min 36.88 35.36

Max 38.16 37.95

Mean 37.52 36.65

Surrounding the immediate periphery of building surface, air temperatures have drastically

reduced by 1.5˚C to 2.0 ˚C.

X-Y plane cut at Z = 0.75 m, 12:00 pmCase 1 - Hardscape Case 2 – Landscape

Integrating Outdoor/Indoor Environments- Thermal Comfort/Energy Optimization



Electrochromic Glass

Smart glass or switchable glass is a glass or glazing whose light transmission properties arealtered when voltage, light or heat is applied.

• Energy Savings up to 18%.

• Reduction in the space

cooling energy consumption

up to 28%

• EPI Reduction up to 20

kWh/sq.m. for the similar

sized operating building



Smart Buildings

Smart Building -

Productive and cost-

effective environment

achieved through

optimization of

structure, systems,

services and

management

Source: Arup Foresight



Smart Buildings

Internet of Things (IoT)Manage and control temperatures,

ventilation, lighting, access,

parking, room occupancy,

elevators and energy usage in a

building using IoT



Smart Grid Technology in Smart Buildings

- Helps to address the energy challenges &

help to lower world’s energy demand.

- Avoids costly grid infrastructure & balance

out the grid fluctuations

- Interplay between power generation and

energy demand.

Co-existence of various types of renewable and non-renewable generating

technologies, such as coal, hydro, nuclear, solar, biomass, geothermal, etc.



Smart Lighting Solutions

- Task tuning

- Daylight harvesting

- Scheduling to deliver demand-

based lighting optimized for each

zone

- Integrated with occupancy and

daylight based sensors

Smart Lighting – A Wireless network controlled systems

Courtesy – Wipro Lilghting



Magnetic Bearing Chillers

LIFE CYCLE COST FOR

CHILLERS

Initial

Investment

Operation and

maintenance costs

• Low as 0.175 kW/ton at full capacity

and below 0.1 kW/ton at part load

• Reliable operation and lower

maintenance

• Sound levels as low as 70 dBA



Courtesy - York

Magnetic Bearing Chillers



Chiller

1

Chiller

2

Cooling

Tower

Air-conditioned

Zone

Chiller

1

Chiller

2

Cooling

Tower

Air-conditioned

Zone

Temperature description Parallel flow chillers Series counter-flow chillers

Chiller 1 Chiller 2 Chiller 1 Chiller 2

Evaporator leaving Temperature (Eg) 6.67 6.67 11.1 6.67

Condenser leaving temperature (Cg) 35 35 35 32

Lift (L) 28.33 28.33 23.9 25.33

• Adopting a Series Counter Flow

arrangement instead of a parallel

flow arrangement, work done (Lift)

by each compressor is reduced,

which significantly improves the

efficiency of the chillers at full and

part load conditions

• Lift = Cg – Eg

• Nearly 20% reduction is attained by

series counter flow chillers.

Optimized Chiller Operation



Optimized Chiller Operation – Hartman Loop

• All chillers, pumps and

tower fans are variable

speed

• Each chillers is operated

at optimum load

Most plants operate a majority of their time below 60% capacity



Be the

Change you

want to see in

the World….

Innovative Technologies in Building Projects Developers ...€¦ · • Make in India • Power for...

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