Energy Saving for Hotels

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Energy Saving for Hotels

• Reducing Fuel and Electricity Bills Through
  Proven Alternative Energy and Cost Saving
  Solutions

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Context

• Oil at 135-140/barrel and rising.
• Diesel fuel at over Rp. 10,000 / liter
• PLN costs increasing
• Energy costs overtaking staff costs
• Meanwhile, we are showered by up to 7 kWh per
  square meter per day, from sun alone!
• Then we spend millions of Rupiah per day, to get
  rid of that energy with big chillers
• Plus, we stoke big fires in the next room to make
  hot water

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FUEL PRICES
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B.E.S.T. SOLUTION

• B etter
• E nergy
• S olutions
• T oday

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A Word About Watts

• (Kilo) Watts are POWER
• (Kilo) WattHours are ENERGY
• ACTUAL units should be (Kilo) Joules
• One Joule One Watt Per Second
• Visit www.kajul.org

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NegaWatts

• Or avoided energy use
• Switching off lights
• Using lower wattage
• Using timers
• Set thermostats on fridges and ACs higher
• MEASURE and MONITOR
• POLICIES and STRATEGIES

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A Bit More About Lights

• There are 15,000 lights in this hotel.
• See here two bulbs one is a 40 Watt Philips
  bulb, the other a 4 Watt LED light.
• One lasts 1000 hours (?) the other lasts 50,000
  hours.
• One is hot - the other is completely cool
• A simple calculation
• Changing 1,000 all-night lights, at a cost of
  US15,000 would save US50,000 per year
• That is a return-on-investment of 3-4 months!
• Can you afford NOT to consider this?

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Solar PhotoVoltaics (PV)

• Turns light into electricity
• Only 15-20 efficiency
• US600 per m2
• Produces only during day-light
• Marginal and expensive (for now)
• Has SOME useful applications

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Useful Solar PV Applications

• Direct Grid-feed reduces carbon-footprint
• Security Lights and - Systems
• Remote Locations Lights
• Solar Pumping
• Solar Ceiling Fans
• Carbon-neutral Electrical Motorbikes

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Wind Energy

• Nice if you can get it Balis wind regime can
  be OK in some locations
• Direct grid-feed
• Small turbines on roofs can work well
• US3000 for 1000 Watt small turbine, can, in good
  Bali locations produce 2200 kWh per year for 10
  years, at costs of approximately Rp. 1,500 / kWh

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Vertical Axis Wind Turbines
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Hydro Power

• Nice if you can get it!
• Unlike most renewable energy produces 24 x 7 x
  365

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Wave Tidal Power

• Potentially interesting for sea-front hotels and
  resorts
• Still a bit adventurous but CAN be relatively
  simple

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BioFuel

• Prices are linked to fossil fuels and will thus
  keep increasing
• Takes food of tables, unless made from Jatropha
  or algae or similar
• Does not SAVE energy, or costs, but CAN
  contribute to carbon-emission reduction
• Some biomass applications may be interesting as
  well.

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BioGas

• From waste water treatment plant
• From garden- and kitchen waste
• For cooking, gas-lights, water-heating, even
  generators

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Micro Turbines

• Highly efficient electricity generators
• 80,000 RPM, air-bearings, no lubrication, no
  oil-changes, once-a-year maintenance
• 60 kW unit produces 115 kW free heat for
  heating and cooling
• System efficiency of 80-90, compared to 30-40
  of diesel generators
• Rp. 730 per kilowatt-hour if LPG at Rp. 7,500 per
  kilo

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Solar Thermal

• The BIG opportunity NOW
• Up to 8 kWh per m2 falls on us for free every
  (sunny) day.
• 60-70 can be captured with simple collectors
  that can cost as little as US250 / m2
• But what to do with all that heat?

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Solar Thermal Water Heating

• We should NOT have to expend paid-for energy
  for water-heating when the sun is shining!
• Simple, cheap, effective
• Obvious!

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Solar Thermal Cooling

• Turns heat into cold with 18th century
  technology (adsorption chilling)
• The more sun, the more cooling nicely balanced
• Can be stored for peak-shaving (event rooms,
  ball rooms, peak-rate times) with IceBanks, or
  pre-chilled water
• Can assist chillers, lowering their operating
  costs with free energy

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Other Solar Thermal Applications

• Power generation (steam machines)

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Heat Pumps

• Reversed air-conditioner harvests and
  concentrates ambient heat at very, very low
  energy costs 1 kWh of electricity harvests 3-4
  kWh of heat from the air, cooling that air in the
  process (free cooling!)

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Revenue Opportunities

• Carbon-Credits
• Increased Room Rates
• Marketing Tool
• Grid-Feed (in the future?)

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Final Notes

• No single BEST solution START THE LEARNING NOW
• NegaWatts can start saving you energy costs TODAY
• Leasing, renting and financing options can make
  you too start saving money NEXT MONTH without
  capital expenditure!

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• Thank You