4. Approaches
โข Resource Efficiency is an attitude that pervades
through ALL levels of operations and involves all
levels of management, staff, guests, even suppliers,
all the time with customized approaches
โข There is no one-single-solution or magic wand. It
involves awareness, willingness, understanding,
motivation, communication implementation and
rewards
5. Approaches
โข Setup a Green Team/Task Force with members of all
relevant departments. It pays to have a โchampionโ of
Resource Efficiency who constantly motivates and
reminds people, researches opportunities and
communicates results.
โข Make it live: Measure and express in the companies
Sustainability Policy or CSR program
6. 1) Energy Management
โข In General:
โ Motivations for Energy Saving
โ Measuring, monitoring, analyzing, communicating
โข Energy Saving Opportunities
โ Lights
โ Rooms AC
โ Refrigeration & Chillers
โ Electrical engines
โ Hot water
โ Transportation
7. Motivations
โข Motivations may vary:
โ Saving money?
โ Saving the planet?
โ Looking โgreenโ?
โข Actually, the most valid motivation is โimproving the businessโ:
research shows companies with good energy policies simply
do better overall, very much like companies that have good
HRD policies simply do better.
โข This is an important and universal truth!
9. Starting
โข Energy saving starts with
measuring and collecting
data on current energy
usage and costs, to
establish the base-line
against which
improvements and savings
are measuredโฆ and
maintainedโฆ
๏งChillers
๏งRoom lights
๏งPublic area lights
๏งACs
๏งFridges
๏งKitchens
๏งPumps
๏งHot Water
๏งGarden lights
๏งTransportation
12. Measuring & Monitoring
โข Starts with an assessment:
โ Determine energy user groups
โ Count lights, ACโs motors, pumps, chillers, fridges, etc.
โ Determine measuring points and monitoring methods
โ Report and recommendations, INCLUDING communication
strategies
13. Measuring & Monitoring
โข Good systems available with easy-to-install
(wireless) sensors, linking to central
โdashboardโ
14. Energy Saving Opportunities
โข Lighting
โข Room ACโs
โข Refrigeration
โข Motors and Pumps
โข Hot Water
โข Photovoltaic Energy
โข Transportation
15. Saving Energy on Lighting
โข LED Lights
โข CFL Lights
โข 30-80% Savings
16. Saving Energy on Lighting
Saving Energy on
โnormalโ fluorescent
lights in offices, kitchens,
back-of-houseโฆ
Starts the lights at full
power, then โdials backโ
to 70%
Can save up to 30%
17. Saving Energy on Lighting
Energy-efficient โT5โ fluorescent tubes in standard โT8โ fixtures
save up to 47%
19. Saving Energy on Lighting
Lighting policy, turning
off lights when not in
use, mainly office and
public areas if not using
sensors
20. Room AC Controls
1) Room key card, using pre settings on what will be
turned on at activation, recommended AC pre-
setting 25ยฐC
2) Manual AC settings by housekeeping, recommended
AC pre-setting 25ยฐC
3) Information leaflet or sticker regarding
recommended room comfort temperature for guests
and why (healthier, less energy, less carbon)
4) Automated AC Control System
5) Replacing R22 with Hydrocarbon (Musicool)
21. Automated AC Control System
โข Controls AC fan-coil based on occupancy of room
โข Senses occupancy
โข Senses open doors
โข Wireless, installs in 20 minutes per room
โข 25-40% savings possible
โข No disruption of guest comfort
โข Bit more sophisticated than โVingโ key card, but same
principle
24. F&B Refrigeration
โข Refrigeration
โ Variable Speed Compressors (inverter-type)
โ Retrofit Motor Controllers
โ Use โfood simulationโ thermostat
โ Thermal Energy Storage to avoid peak hours, with
Phase Change Materials (1 m3 of this materials
can store 50 kWh โcoolingโ)
โ Cases with 45% savings reported
25. Thermal Energy Storage
โข Stores โcoolingโ produced in off-peak hours for use
during peak hours
โข Small: from room fridges to walk-in freezers
โข Big: From 45 to 500 โTonHoursโ cooling per module
for chiller systems
26. Motors for Pumps, Lifts, etc.
โข Variable Speed (or Frequency) Drives adjust the
amount of energy send to the motor according to the
actual load
โข Most suited for motors
with variable loads
โข 10-20% energy reductions
possible
27. Hot Water: Solar Hot Water
FREE energy from the sun
Benefit: reduced diesel fuel consumption by 50%, from 400 liters
down to 200 liters per day
Return-on-Investment can be as low as 24 months
Discovery Kartika Plaza Hotel Bali
The system consists of 144 flat
plate solar thermal collectors that
operate the hot water system from
7:30am to 6:00pm.
15-20 cubic meters of water is
heated from 30-60ยบC each day.
28. Hot Water: Heat Pumps
โข Basically a โreversedโ chiller, a Heat Pump โharvestsโ
and โconcentratesโ heat from ambient air (or from
water) into hot water
โข 1 kWh electrical energy input produces 3-4 kWh
thermal energy output PLUS 2-3 kWh of cooling,
giving a COP of up to 7 if the cooling effect can be
used.
โข Return-on-Investment can be as low as 18 months
29. Hot Water: Heat Pumps
Heat Pumps are
renewable energy
machines and are
considered โcleanโ
energy.
They use electricity but
very little and they save
a LOT of money on โdirtyโ
fuel
HEAT PUMPS CAN ALSO EXTRACT HEAT FROM CHILLER RETURN
LINES OR COOLING TOWER CIRCUIT TO SAVE ENERGY ON THE
CHILLERS!
Aston Bali
30. Hot Water: Heat Pumps
Aston Bali Case Study
New equipment supplied and installed:
- 3 Ecotech heat pumps of 30kW each for room's hot water direct
supply and for preheated water supply to the laundry
- 2 X 6,5m3 insulated and pressurized storage tanks
- Simons electrical boiler of 245,5kg/h for steam supply to the
laundry
- General Electric water softener filter unit of 1,8m3/h
ROI 1.5 years through replacement of fuel boilers
substantial savings for diesel fuel
31. Hot Water: Heat Exchanger
Works similar to the heat pump, but easy to retrofit
and can be installed individually for Split ACs
32. Photovoltaic Energy
Komune Beach Resort Bali
Grid-connected PV
Solar Energy is
becoming a feasible
option with
ROIs of 8 years
with equipment
guaranteed for up to 25
years
34. 2) Water Management
โข In General:
โ Motivations for Water Saving
โ Measuring, monitoring, analyzing, communicating
โข Water Saving Opportunities
โ Flow rates
โ Toilets & Urinals
โ Storm water catchment
โ Water recycling
โ Water storage
โ Avoid Leakage
โ Reduce laundry (towel policy)
35. Motivations
โข Motivations may vary:
โ Saving money?
โ Saving the planet?
โ Looking โgreenโ?
โข Again the main driver is cost saving and scarcity of
resources
โข Also Water=Life and can have effects on our health,
so providing good quality water is essential to
maintain market share
37. Starting
โข Water saving starts with
measuring and collecting
data on current water
usage and costs, to
establish the base-line
against which
improvements and savings
are measuredโฆ and
maintainedโฆ
๏ง Flow rates
๏ง Toilets & Urinals
๏ง Storm/Rain water
catchment
๏ง Water recycling
๏ง Water storage
๏ง Avoid Leakage
๏ง Laundry (towel
policy)
38. Measuring & Monitoring
โข Starts with an assessment:
โ Determine water user groups
โ Ensure that all deep wells have a meter
โ Determine measuring points and monitoring methods
โ Check flow rates on all water outlets
โ Check for leakage
โ Report and recommendations, INCLUDING communication
strategies
39. Rooms
โข Adopt water efficient flow rates
โข Install water efficient fittings with โExcellentโ ratings
โข Install water efficient shower heads with โExcellentโ
ratings
โข Install water efficient dual flush toilet
41. Public Toilets
โข Adopt water efficient flow rates
โข Install water efficient fittings with โExcellentโ ratings
โข Install water efficient dual flush toilets
โข Install water free urinals
42. In house laundry
โข Recycle the rinse water for first wash
โข Operate washing machines only when fully loaded
โข Turn off and isolate the steam supply to equipment
when not in use (will conserve energy and reduce
make up water demand for the boiler)
43. Kitchen
โข Adopt water efficient flow rates
โข Install water efficient fittings with โExcellentโ ratings
โข Wash vegetables and dishes in a filled sink instead of
under running taps
โข Do not melt frozen food or melt ice under running
water
โข Use a low flow rinser for washing of dishes
44. Pool
โข Set the operating water level in the balancing tank at
appropriate level to minimize overflow
โข Check for leakages and repair
โข Use pool cover to reduce evaporation (up to 7cm per
night at 26-28ยฐC)
โข Reuse backwash water for irrigation and cleaning
46. Outdoor
โข Use a watering can instead of running hose
โข Install drip irrigation as it applies water slowly and
directly to the roots of plants
โข Wash floors using mop and bucket instead of a hose
โข If hose is used fix a spring loaded nozzle to the hose
47. Storm/Rain Water Catchment
โข Install rain water gutters and filters
โข Captured rain water can be used for the cooling
towers
โข Captured rainwater can also be treated and used as
part of the water recycling process reducing the need
for ground water supply
โข Rain water can also be used for irrigation
48. Water Recycling
โข Treatment of waste water discharge into high grade
quality water will enable a facility to recycle water for
use in a wide range of applications within the facility.
โข This technology not only delivers to your hotel the
highest quality water, it also decreases maintenance,
repairs and replacement of every appliance and item
of machinery that currently comes in contact with
the hotels water source.
49. Water Recycling
โข ROI of 1-2 years
โข Successfully installed and running in Aston Bali, Nikko
Hotel, Sheraton Beachwalk, Kuta Townhouses,
Discovery Kartika Plazaโฆ
50. Waste Water (STP)
โข A proper sewage treatment plant should be in place
with enough capacity to treat sewage
โข Grey water of STP should be disposed properly
โข Recommended to recycle grey water with
appropriate technology (e.g. Starfishโฆ)
โข Recomended STP system is a Bioseptic System using
active bacteria and minimizing the use of heavy
chemicals
52. Motivations
โข Motivations may vary:
โ Saving money?
โ Saving the planet?
โ Government Compliance?
โข With a proper waste management program in place savings in
operational costs can be achieved
โข Proper separation and disposal of waste is important and can
be communicated through a sustainability policy
โข Based on UU 18 year 2008 and UU 32 year 2009 there are
regulations to follow in regards to waste management and the
national rating tool is called PROPER
Of 44 hotels analized in 2011 only 11% were graded โBLUEโ
while all the other where rated โREDโ.
(Not complying to minimum standards yet)
53. Motivations
โUU 18 year 2008โ on Solid Waste Management, is emphasizing that the
practices of proper waste disposal, waste reduction as well as recycling and
composting constitute the main pillars of a correct waste management and
should be implemented at all level.
This law also clarifies duties and responsibility that each sector, businesses
and individuals have in the implementations of these practices. Related
PERDA (peraturan daerah) already out in some provinces and districts.
โBusinesses have the responsibility to ensure that third parties
employed for waste disposal are trustworthy and that โwaste in
generalโ or โsolid waste residueโ (which is the waste of non
commercial value remaining after taking out recyclables and
organic fraction used for feeding animal/composting) is hauled
to a legal facility (TPA) and not disposed in private or public land
(illegal dumping).โ
54. Measuring & Monitoring
โข Starts with an assessment:
โ Determine sources of waste generation
โ Establish waste separation at source
โ Determine measuring points and monitoring methods
โ Waste going to landfill is best measured in weight or
volume
โ Recyclable are best measured based on sales report
โ Report and recommendations, INCLUDING communication
strategies
55. Separation
โข Housekeeping should have wet and dry bins/bags
when collecting waste in rooms
โข Kitchen should use wet and dry bins
โข A proper garbage room is divided in sections for wet
waste (compostable, animal feed) and dry waste
(recyclables such as paper, plastic, glassโฆ) an
remaining dry waste for landfill
โข A separate B3 (toxic waste) room for light bulbs,
batteries, chemicalsโฆ
56. Reduction/Reuse
โข No plastic bags in room bins
โข Refill amenities
โข No plastic laundry bags (use textile bag)
โข Reusable slippers
โข Reuse paper policy with double sided printing or use
non-confidential waste print for internal printing
โข Refill ink
โข Minimize plastic wrap and use containers
โข Minimize packaging from suppliers (e.g. vegetable
and fruits in boxes instead of plastic)
57. Composting/Recycle
โข Use organic wet waste as compost for gardens
โข Food waste can be sold to animal farms as feed
โข Old cooling oil can be used in oil lamps or sold for
biodiesel production (if available)
โข For drinking water offer in glass bottles as can be
reused by supplier
โข Buy recycled products
58. Disposal
โข Make sure that a proper agreement is in place for
waste disposal and occasional checks of the supplier
are recommended to ensure there is no illegal
dumping
โข Make sure that a proper agreement is in place for B3
disposal
โข Proper disposal of sludge, grey water and grease
59. 4) Land & Facility Management
โข Utilize gardens/green space for organic gardening
and local fruit trees
โข Vertical gardens and Green walls cool down the
building, can be used to treat grey water and utilized
for farming
โข In open areas use daylight and reduce the need for
lighting
โข Ventilation in open areas is best achieved with fans
60. Summary
โข Measure, monitor, audit, analyzeโฆ.
โข Many possibilities and opportunities to save energy
and water and to reduce waste, some with excellent
return-on-investment
โข Each hotel will be different and different solutions
will apply
โข Transitions HAVE to be made
โข If you need help talk to an environmental consultant
or specialist on the specific topic (recommendations
available on request)