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ICICI Bank – Largest Private Sector Bank.
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BEFORE
AFTER
4867 Branches 14367 ATMs 24x7 Call Centre
24x7 E Lobby Internet Banking I Mobile App
ICICI Bank – Largest Private Sector Bank.
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BEFORE
AFTER
Mafatlal Tower Portfolio
4
Year of occupation 2006
Area 31773 S Ft.
Connected load 540 KW
Orientation North-South
Per Capita kWh/p.m. 62
No. of Work station 537 (Plus 85
Night shift)
Air Cooled Chillers 2 x 70 TR
Light LED
UPS (KVA) 60 kVA
DG KVA 160
67%
14%
10%9%
HVAC IT
Canteen & Others Lighting
5
Mafatlal Load Distribution
LOAD kW
HVAC 195
IT 40
Canteen/
Others
30
Lighting 25
Total 290
Specific Energy Consumption
0
20
40
60
80
100
120
140
160
180
200
FY 2015 FY 2016 FY 2017 FY 2018
6.9L kWh
4 L kWh
42% Saving in 2 Years
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124
190184
4.6L kWh
Energy and HVAC Audit FY 2016
Energy Audit
High Chiller ikW/Tr.
Chilled Water Pumps Optimization.
Open Loop Chilled Water system
without Cooling Tower.
Remote Monitoring
BMS
7
Energy Modelling and Simulations
HVAC Project FY 2017
High Efficiency
Chiller System
Twin Rotor Screw
Chillers
Closed Loop System
Auto Air Separator
Inline Primary Variable Pump.
Chiller plant Manager
Performance Guarantee
HVAC Project Contd…
Twin Rotor Screw Chiller
Description Old Chiller New Chiller
Compressor Scroll Twin Rotor Screw
Evaporator Dx (Plate Type) Shell & Tube
Expansion Valve Thermostatic Electronic
Economiser No Yes
Pumping Primary + Secondory Primary Variable
CPM NA Installed
Achieved Plant Room
ikW/Tr of 1.3
HVAC Project cont…
Variable Primary Inline Chilled Water Pumps with
Dual Screw Compressor
11
+
Guaranteed
Savings 1.3
Lac kWh RoI
2 Years
UPS Optimization FY 2017
Reduce
Two UPS of 80 and 100KVA for two separate parts, With
Low Loads. Hence disconnected 80 KVA UPS.
Reuse
All Load was shifted on single 100 KVA UPS.
Recycle
The extra 80 kVA UPS was used at another Tower
Innovation FY 2018
9% Saving p.a. Cost INR 4L
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The capacitor failure triggered UPS
Replacement with foll features.
Modular 20 kVA 3# Modules
Efficiency above 95%
Modules swappable.
Built In Redundancy
RoI within 1 Year.
Reduced AC Load
32850 kWh saved.
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Innovation Hot Desking - FY 2018
5% Saving p.a.
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A limited number of staff works during night time catering to
international geographies. The Cooling load is very low and fixed
speed chiller does not work below 30% loading.
Hence this area was segregated and separate standalone inverter
cassette type ac was provided.
This resulted in better cooling and enhanced customer
satisfaction. As Indian holidays do not match with international
holidays, this arrangement was a big energy saver on such days.
Annual saving 20000kWh
BEFORE
AFTER
ICICI Bank Temperature Policy
5% Saving p.a.
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Low Investment Projects. FY 2018
DC Brushless Fans
Ceiling Fan for Canteen with
AC Temp @ 26 Deg Celcius
The DC Fan is of 28 Watts
conventional Fan of 70W
A Draft is produced by Fan
Estimated saving of 2500kWh p.a.
Pull Chords for Lights ON/OFF
Sense of Ownership
Estimated Saving of 3000kWh pa
Internal Bench Marking
17
80 83
9297 97 100 103
109 110114 117
121 125
148 148 151
EPI of 100 By 2019
19
Green House Gas Emissions
GHG Emissions Verified by
External Certified Agency.
FY
2015
FY
2018
Saving
Tons
CO2
Saving
%
545 308 237 43
Learnings.
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Check for Recent Activity
During night hours we used to run only required AHU’s as per
occupancy. This practice was working well for one year
however suddenly we started getting complaints. The
investigation revealed that during PMS activity the chilled
water actuator valve of AHU was connected wrongly.
Deep Freezer
The drain Plug of Deep Freezer is open
Chilled Water Pumps VFD.
There is tendency to set VFD at fixed frequency.
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Planned Encon Measures
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Permanent Magnet Motors for AHUs
Due to space constraints its not possible to install EC blowers
on ceiling suspended AHUs hence we plan to install
Permanent Magnet Motors for AHUs wherein 50% AHU
energy can be saved.
Solar Water Heater
As there are high rise buildings in the vicinity its not feasible
to install Roof Top solar plant. However we plan to install solar
water heater for Hot water.
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Green Supply Chain Management
Promotional sale of LED
Paperless zone
e-FSR
e-mailers of Annual report
UPS & Battery buyback
Photocopier buyback
22
External and Internal Recognition
24
Thank You