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Energy Saving for Hotels

Energy Saving for Hotels. Reducing Fuel and Electricity Bills Through Proven Alternative Energy and Cost Saving Solutions. Context. Oil at $135-$140/barrel and rising. Diesel fuel at over Rp. 10,000 / liter PLN costs increasing Energy costs overtaking staff costs

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Energy Saving for Hotels

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  1. Energy Saving for Hotels Reducing Fuel and Electricity Bills Through Proven Alternative Energy and Cost Saving Solutions

  2. 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……

  3. FUEL PRICES

  4. B.E.S.T. SOLUTION • B etter • E nergy • S olutions • T oday

  5. 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

  6. NegaWatts • Or ‘avoided’ energy use • Switching off lights • Using lower wattage • Using timers • Set thermostats on fridges and AC’s higher • MEASURE and MONITOR • POLICIES and STRATEGIES

  7. 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 US$15,000 would save US$50,000+ per year • That is a return-on-investment of 3-4 months! • Can you afford NOT to consider this?

  8. Solar PhotoVoltaics (PV) • Turns light into electricity • Only 15-20% efficiency • US$600 per m2 • Produces only during day-light • Marginal and expensive (for now) • Has SOME useful applications:

  9. 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

  10. Wind Energy • Nice if you can get it – Bali’s wind regime can be OK in some locations • Direct grid-feed • Small turbines on roofs can work well • US$3000 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

  11. Vertical Axis Wind Turbines

  12. Hydro Power • Nice if you can get it! • Unlike most ‘renewable energy’ produces 24 x 7 x 365

  13. Wave & Tidal Power • Potentially interesting for sea-front hotels and resorts • Still a bit ‘adventurous’ but CAN be relatively simple

  14. 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.

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

  16. 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

  17. 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 US$250 / m2 • But what to do with all that heat?

  18. 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!

  19. 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’

  20. Other Solar Thermal Applications • Power generation (steam machines)

  21. 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!)

  22. Revenue Opportunities • Carbon-Credits • Increased Room Rates • Marketing Tool • Grid-Feed (in the future?) $$

  23. 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!

  24. Thank You

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