(A Unit of Muthoot Hotels Private Limited) ENERGY ...keralaenergy.gov.in/EET/Presentations/Vivanta...
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ENERGY CONSERVATION PROGRAM (A Unit of Muthoot Hotels Private Limited)
Transcript of (A Unit of Muthoot Hotels Private Limited) ENERGY ...keralaenergy.gov.in/EET/Presentations/Vivanta...
ENERGY CONSERVATION PROGRAM
(A Unit of Muthoot Hotels Private Limited)
COMPANY PROFILE
• Vivanta by Taj Green Cove, Kovalam earlier known as Taj Green Cove Resort & Spa
was open to the public on 23.12.2004.
• Managed by the Taj Group of Hotels (Indian Hotels Company Limited - IHCL) and is
owned by Muthoot Hotels (P) Ltd.
• IHCL is part of the well-diversified Tata Group of Companies which has more than 75
companies spread globally.
• Taj Hotels Resorts and Palaces has an exclusive division to plan, guide and
monitor all initiatives and processes related to Environment and Corporate Social
Responsibility activities across all the hotels.
• VBT Kovalam has -
59 hillside cottages with elephant-grass thatched rooftops spread over a hillside
3 restaurants: Jasmine Bay, Curries & Bait – 1 bar: Neera Bar – 2 Banquet Halls &
Boardroom – the Jiva Spa
In an endeavor to reinstate its vision and efforts
to boost sustainable tourism and integrate
environment management in all business
areas,
Taj Hotels Resorts and Palaces presents
EARTH (Environment Awareness & Renewal at Taj Hotels),
a project which echoes the conscious effort of
one of Asia's largest and finest group of hotels
to commit to energy conservation and
environmental management.
EARTH has received SILVER certification from
EarthCheck, the only worldwide environmental
certification program for travel and tourism
PROFESSIONAL APPROACH TAKEN FOR ENERGY CONSERVATION
• Vivanta by Taj, Kovalam carried out a campaign titled “TEM”, Total Energy Management
in association with international energy and environmental specialists - UV Krishna
Mohan Rao Associates
• The TEM called for allocation of resources in terms of man power ,time ,and money and
Vivanta by Taj, Kovalam, ensured the same.
• TEM meant to look at the entire facility in totality to derive maximum benefits out of the
conservation efforts
Annual Energy Cost
Annual Thermal +Water Cost
Annual Electrical Energy Cost
Energy cost Per RNS
Rs.1449
Before
(2013-14)
Rs.233
Lacs
Rs.65
Lacs
Rs.168
Lacs
ENERGY COST OF FY 2013-14 VS FY 2014-15
Rs.205
Lacs
Rs.42
Lacs
Rs.163
Lacs
Rs.1279
After
(2014-15)
Specific Electricity Consumption(kWh/RNS)
Specific Boiler HSD Consumption(Litres/GNS)
Specific water consumption(kL/GNS)
1.2
0.90
88
0.2
0.85
Before After
SPECIFIC ENERGY CONSUMPTION - FY 2013-14 VS FY 2014-15
91
2011-12 2012-13 2013-14 2014-15
kWh/Room 96 92 91 88
82
84
86
88
90
92
94
96
98
Ele
ctr
icit
y C
on
su
mp
tio
n
kW
h/A
vailab
le r
oo
m
SPECIFIC ELECTRICITY CONSUMPTION KWH/AVAILABLE ROOM
2012-13 2013-14 2014-15
Ltr./GN 1.1 1.2 0.2
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
Bo
iler
die
sel c
on
sum
pti
on
Lt
r/G
ue
st n
igh
t
Specific Diesel Consumption Ltr/GN
SPECIFIC DIESEL CONSUMPTION - LTR / GUEST NIGHT
2011-12 2012-13 2013-14 2014-15
kl/GN 1.04 1.09 0.90 0.85
-
0.20
0.40
0.60
0.80
1.00
1.20
Wat
er
con
sum
pti
on
kL
/Gu
est
Nig
ht
Sold
Specific water consumption kl/GN
SPECIFIC WATER CONSUMPTION - KL/GUEST NIGHTS
BEST PRACTICE-1
HEAT PUMP IN PLACE OF HOT WATER BOILER
HEAT PUMP
• 50000 kcal/hr, diesel (HSD) fired hot water boiler was replaced with electrically
operated heat pump for domestic hot water generation
• Heat pumps provide hot water at 55~60˚C resulting in 1/3rd the cost of generation of
hot water when diesel fired boilers are used
• Heat pumps provide cooling as a free byproduct which is used for air conditioning
thereby reducing the chiller load
• Heat pumps can provide hot water throughout the year without any interruption
• The carbon footprint by virtue of heat pump is minimal and is therefore environment
friendly.
• Heat pump is a reverse cycle vapor compression air-conditioner where the rejected
heat from condenser is utilized to generate hot water or hot air.
• The evaporator of the heat pump can be designed to deliver cold air or chilled water.
• Combined cooling and heating “Coefficient of Performance” (COP) of heat pump can
be 6 to 8 and only heating COP ranges from 2.5 to 4 based on evaporation and
condensation temperature
• The following schematic gives a broad depiction of the heat pump cycle:
HEAT PUMP- LINE DIAGRAM
BOILER VS HEAT PUMP SCHEMATIC
HEAT PUMP PROJECT COMPARISON
Before
After
Description Unit Before
(June-13 to
May-14)
After (July-14 to
June-15)
Diesel consumption per year Ltrs. 42,265 0
Electricity Consumption per
year kWh 26,937 120,085
Unit cost Litre – Rs. 60
kWh – Rs. 8.6
Rs./ltr &
Rs/kWh
Only electricity
cost involved
Cooling output from heat pump TR/year 87,600
Electricity saving due to chiller
load reduction kWh/year 65,700
Annual energy cost Rs.Lacs 27.7 4.7
Annual Cost saving Rs.Lacs 23.0
Compared to boiler and conventional electrical heater, the heat pump is significantly more efficient as
evident from the following table:
Description Boiler Electrical
heater Heat pump
Input kW 10 10 10
Efficiency % (COP) 0.85 0.95 3.5
Heating output kW 8.5 9.5 35.0
ikW/kW of heating (only heating) 1.18 1.05 0.29
Heat observed from evaporator kW
(cooling generated) 0 0 25
COP of comparable split AC 3.5
Net power consumption of heat pump
for only heating with cooling as by
product kW
2.9
ikW/kW of heating with cooling
utilization 1.18 1.05 0.08
HEAT PUMP VS OTHER OPTIONS
BEST PRACTICE-2 REPLACEMENT OF SECONDARY PUMPS &
OPTIMIZATION OF PUMP OPERATION
CHILLED WATER PIPELINE LAYOUT
130 TR Chiller 1
130 TR Chiller 2
AHUs
FCUs
Secondary pump for AHUs
Secondary pump for FCUs
2.5 kg/cm2
2.4 kg/cm2
2.3 kg/cm2
2.3kg/cm2
2.7 kg/cm2
3.6 kg/cm2
Primary pump
Balancing valve /De-coupler line
SAVINGS CALCULATION
Description Units Before Implementation After Implementation
Primary
Pump
Secondary
Pump
Guest
Secondary
Pump AHU
Primary
Pump
Secondary
Pump
Guest
Secondary
Pump AHU
Pump make Kirloskar Kirloskar Kirloskar Xylem Xylem
Pump design head Meter 16 46 22 16 9
Pump design flow m3/hr 36 21.6 11.2 60 35
Rated motor power kW 2.2 5.5 1.5 4 1.5
Measured power
consumption kW 1.90 11.90 2.20 0.00 4.86 1.21
Power Savings kW 1.90 7.04 0.99
Annual operating hours hrs/year 8760 8760 8760
Annual energy savings kWh/year 16644 61670.4 8701.6
Annual energy savings due
to chiller load reduction
equivalent to reduction of
energy consumption
kWh 3,787 14,031 1,980
Total Annual Energy
Saving kWh/year 106,813
Annual CO2 saving Tons 87.59
PRIMARY AND SECONDARY PUMPS PHOTOGRAPHS
Before After
PRIMARY Primary Pumps
Secondary Pumps
BEST PRACTICE-3 REPLACEMENT OF CONDENSER WATER CIRCULATION PUMPS
Before
CONDENSER WATER CIRCULATION PUMPS
Before After
SAVINGS CALCULATION- CONDENSER WATER CIRCULATION PUMPS
Description Units Before
Implementation After Implementation
Pump make Kirloskar Xylem
Pump design head Meter 40 10
Pump design flow m3/hr 46.8 94
Rated motor power kW 9.3 4
Rated motor efficiency % 88.3
Measured power
consumption kW 10.20 3.19
Power Savings kW 7.01
Annual operating hours hrs/year 8,760
Annual energy savings kWh/year 61,378
Annual CO2 Saving Tons 50.3
OTHER PROJECTS
MAJOR ENERGY CONSERVATION ACTIVITIES
SAVINGS AND INVESTMENT
1
Efficient operation of chiller plant auxiliaries:
On a thorough study, resorted successfully to operate only one set of
condenser pump and one primary chilled water pump whenever only one
chiller is in operation, instead of operating two sets of pumps
Annual Energy Saving : 58,254 kWh
Annual CO2 Saving : 43,690 kgs
Annual Cost Saving : Rs.5,34,000
Project cost : Nil
2
Converted primary and secondary pumping system to only secondary
pumping system. This enabled to shut the primary chilled water pump
by operating with secondary chilled water pumps
Annual Energy Saving : 13140 kWh
Annual CO2 Saving : 7855 kgs
Annual Cost Saving : Rs.1,22,202
Project cost : Nil
MAJOR ENERGY CONSERVATION ACTIVITIES-
SAVINGS AND INVESTMENT
3
Motion sensors are installed in public area wash rooms to
avoid idle operation of lamps
Annual Energy Saving : 1,734 kWh
Annual CO2 Saving : 1,300 kgs
Annual Cost Saving : Rs.16,000
Project cost : Rs.5000
4
Installed key card based automation in guest rooms to save
idle power during unoccupied times
Annual Energy Saving : 23,470 kWh
Annual CO2 Saving : 17,602 kgs
Annual Cost Saving : Rs.2,15,000
Project cost : Rs.1,47,500
MAJOR ENERGY CONSERVATION ACTIVITIES-SAVINGS AND
INVESTMENT
5
Replaced 25/40W incandescent candle lamps with 4W energy-efficient LED lamps at
identified locations in Public areas and guest rooms areas Required ambience is
maintained with enhanced light output.
Annual Energy Saving : 28461 kWh
Annual Co2 Saving : 21,345 kgs
Annual Cost Saving : Rs.2,61,000
Project cost : Rs.3,00,000
6
Replaced12V, 50W halogens spot lamps with 6W LED lamps at guest rooms and 8W LED
lamps at Jasmine Bay and Public areas meeting the required ambience with enhanced
light output
Annual Energy Saving : 53,183 kWh
Annual CO2 Saving : 39,887 kgs
Annual Cost Saving : Rs.4,94,000
Project cost : Rs.3,40,000
7
Replaced 12V, 75W halogen lamps with 8W energy-efficient LED lamps at lobby areas
and required ambience is maintained with enhanced light output.
Annual Energy Saving : 583 kWh
Annual CO2 Saving : 437 kgs
Annual Cost Saving : Rs.5,426
Project cost :Rs.10,000
MAJOR ENERGY CONSERVATION ACTIVITIES-SAVINGS AND
INVESTMENT
7
Replaced high water consuming showers, wash basin taps
with water saving showers and taps with aerators in guest
rooms, employee locker rooms and public areas. The user
comfort has increased with reduced water consumption
meeting international standards
Annual Energy Saving : 2,190 kl
Annual Cost Saving : Rs.3,00,000
Project cost : Rs.89,000
8
Using STP treated water for cooling tower make-up saving
raw water
Annual Water Saving : 3285 kl/year
Annual Cost Saving : Rs.4,49,000
Project cost : Rs.50,000
MAJOR ENERGY CONSERVATION ACTIVITIES-SAVINGS AND
INVESTMENT
9
Replaced expensive diesel-fired hot water boiler with energy-
efficient heat pump for hot water generation at 50⁰C that also
generates useful chilled water concurrently. Hot water is used for
guest rooms & rejected cold water at 7⁰C from the heat pump is
utilized for air-conditioning, reducing energy consumption for
chiller plant.
Annual fuel Saving : 41,975 ltrs
Annual Energy consumption: 49,954 kWh
Annual CO2 Saving ; 97,748 kgs
Annual Cost Saving : Rs.24,33,000
Project cost : Rs.14,00,000
10 Replaced 9.3kW condenser water pumps with 4kW requisite head &
flow energy efficient pump
Annual Energy Saving : 61,378 kWh
Annual CO2 Saving 50329 kgs
Annual Cost Saving : Rs.5,70,819
Project cost : Rs.1,50,000
REPLACEMENT OF 50W HALOGENS WITH 6W ENERGY-
EFFICIENT LED LAMPS
Description Unit
Before implementation After implementation
Jasmine
bay
Guest
room
public
area
Jasmine
bay
Guest
room
Public
Area
Rated power consumption of
lamp Watts 50 50 50 8 6 8
Number of lamps Nos. 24 167 137 24 167 137
Average power consumption
per fixture
(including ballast)
Watts 50 50 50 8.4 6.2 6.2
Average operation hours per
day
(for guest rooms considered @
68% occupancy)
Hrs. 24.0 6.8 12.0 24.0 6.8 12.0
Power savings of lamps
replaced kW
1.0 7.3 6.0
Annual energy savings kWh 8,746 18,155 26,283
Total annual energy savings kWh 53,183
Annual CO2 Saving Tons 43.61
PHOTOGRAPHS
REPLACEMENT OF 75W HALOGENS WITH 8W ENERGY-
EFFICIENT LED LAMPS
Description Unit Before
implementation
After
implementation
Rated power consumption of lamp Watts 75 8
Number of lamps Nos. 23 23
Average power consumption per fixture
(including ballast) Watts 78 8.5
Average operation hours per day Hrs. 10 10
Energy Consumption per day kWh 18 2
Power savings of lamps
replaced kW 1.6
Total annual energy savings kWh 583
Annual CO2 Saving 478
REPLACEMENT OF 25/40W CANDLE TYPE GLS LAMPS WITH
4W ENERGY-EFFICIENT LED LAMPS
Description Unit
Before implementation After implementation
Public area Guest room Public area Guest
room
Rated power consumption of
lamp Watts 40 40 4 4
Number of lamps Nos. 125 111 125 111
Average power consumption per
fixture
(including ballast)
Watts 40 40 4 4
Average operation hours per day Hrs. 12 6.0 12.0 6
Power savings of lamps
replaced kW 4.5 4.0
Annual energy savings kWh 19,710 8,751
Total annual energy savings kWh 28,461
Annual CO2 Saving Tons 23,338
Vivanta by Taj Green Cove- Kovalam, Kerala
G. V. Raja Vattapara Road, Kovalam
Thiruvananthapuram 695 527, Kerala, India
T 91 471 661 3000 F 91 471 248 7744
www.vivantabytaj.com
Thank you. Have a Nice Day!
