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  2. 2. ENERGY EFFICIENCY OPPORTUNITIESLow-Cost Measures Measure and track energy performance. Develop an energy team and assign responsibilities to pursue energy efficiency in all departments. Review and emphasize the financial and environmental results of a preventive maintenance program for major systems and components. Ensure that team members from every department are trained in the importance of energy management and basic energy-saving practices. Set goals and a methodology to track and reward improvements. 2
  3. 3. Cost-Effective Investments Recommission primary systems to ensure continuous efficiencies. Install energy-efficient lighting systems, ENERGY STAR qualified compact fluorescent lights (CFLs), and light-emitting diode (LED) exit signs. Install occupancy sensors on lighting and HVAC systems in back- of-house spaces, meeting rooms, and other low-traffic areas. 3
  4. 4. Saving Energy Is Easy Conduct an energy audit to determine where and how your facility uses energy. Create an energy saving plan and enact to reduce use. Monitor and measure energy use to determine success. 4
  5. 5. ACTION PLANS1) Deployment of Energy efficient machines.2) Auto – controls for A/c systems (BMS)3) Efficient chilled water distribution system4) Variable speed secondary pumping system5) Change of cooling tower blades – metallic to FRP.6) Double skin AHU – supply return ducts7) Room automation – key card system, (Key switches)8) Utilization of cool atmospheric air9) Use energy wheel recovery of cooling effect.10) Offline dedicated filter for cooling tower11) Efficient lighting system, use of energy savingbulbs/CFL.12) Use of Dimmers13) Electronic Ballast / energy efficient tube (T-S)14) Voltage reducer for lighting circuits.15) Lighting circuits on BMS/Auto Controller 5
  6. 6. 16) Energy efficient motors.17) Timers for remote lighting/Security lighting18) Efficient Elevator machines. VVVF19) Boiler insulation – Front/Back covers.20) Burner modulation.21) Fuel additives.22) Reclaiming heat from boiler flue.23) Waste heat from condensate – waste heatrecovery24) Use A/c machine with De – super heater. 6
  7. 7. Major energy users in hotel The major energy users in a hotel are : Space Heating Air conditioning and ventilation Hot water production Lighting 7
  8. 8. SPACE HEATING Rising energy costs have forced the design of modern hotels to take energy efficiency into account, without touching the comfort level and aesthetics that are vital for the hotel business. Space heating should preferably be done using a directly fired gas boiler. Heating oil boilers can also be found, but the efficiency of today’s gas boilers is much higher than that of heating oil boilers. 8
  9. 9.  Following rules of thumb have to be taken into account for heating are : Ensure good pipe insulation. The losses from a non- insulated pipe are huge. Fittings such as valves and flanges must also be well insulated. Flue gas losses must be kept as low as possible. This is done by keeping the flue gas temperature as low as possible, using economizers on the flue gasses. Today’s directly fired gas boilers work strongly on this principle (condensing gas boilers). Autonomous temperature control systems should be used to enable the temperature in a room to be lowered when it is not occupied, keeping it at a standby level so that it can be quickly restored to the normal level 9
  10. 10. AIR CONDITIONING AND VENTILATION For the air conditioning and ventilation of the hotel areas there are usually various units available. As the occupation of the various hotel areas is different, the comfort level required in each zone is different and the load (decorative lighting, heat losses, solar gains, etc) is variable, the HVAC installation has to be engineered to answer these different needs. Depending on the conditions, the air may be heated, cooled, humidified and/or filtered. Cooling, heating and humidification are generally done by a central generating station of heat and cold. 10
  11. 11.  Some typical applications in a hotel and their particular characteristics are : •Guest rooms: depending on the type of hotel and the environment, guestrooms are generally only used to relax and sleep in. Comfort level requirements at night are lower than by daytime, so this has to be taken into account in setting the HVAC parameters. •Meeting rooms: used only during “office hours” with HVAC to suit the comfort of people in these areas. 11
  12. 12.  Restaurant: almost continuously occupied, except during the night. HVAC set to suit the comfort of the people there. Inside swimming pool, sauna and wellness area: HVAC to control the conditions of higher humidity. Comfort level is at a higher temperature than guest rooms, but occupancy hours are different. Outside opening hours, it is important to set HVAC to a lower level to reduce energy consumption. 12
  13. 13. DOMESTIC HOT WATER The energy required to produce domestic hot water can account for up to 17% of the total energy consumption of a hotel. Domestic hot water requirements in hotels are very different from category to category. For example, a five-star hotel requires around 150 litres per guest per day, while for a three-star hotel only 90 litres per guest per day are used. Hot water is mainly used for baths and showers in the guest rooms, for services and in the kitchens. 13
  14. 14.  Some measures for energy savings in the production of hot water without compromising the comfort level, are: Insulation of piping and storage tanks. Installation of low consumption systems in showers and baths without reducing quality of supply. Installation of hot water consumption meters in order to monitor performance of services. Installation of programmed taps in toilets and services in general service area. Minimisation of hot water leaks through correct maintenance of pipes and taps in showers, baths and hand basins. 14
  15. 15. AREA –WISE BREAK UP OF LIGHTING (YEARLY) Area Kwh % of total lighting load Public Area 1204138 51.6 Guest Area 523000 22.4 Service and 607360 26External Area 15
  16. 16. LIGHTINGLighting is one of the largestelectrical energy consumers inhotels, as in many other kinds ofutility buildings.Lighting installations must provideadequate levels of illumination foreach activity.Aesthetics and comfort level arealso important for lighting insidehotels, depending on the area wherelighting is required. 16
  17. 17.  The choice of light source depends on various criteria, like : efficiency , colour temperature, colour rendering index, lamp life, emission mode, Lighting in the different areas of the hotels have different requirements, but it is very important that the most efficient lamp and armature is chosen for each application. For corridors in large hotels for example, with many guests using the same corridor, the lights stay on 24/7 all year long, so here the CFLs (compact fluorescent lights) are the 17 way to save energy
  18. 18.  For corridors in small hotels onthe other hand, where less guests use the corridor, a motion detector with incandescent lamps could be better. Use of localized lighting instead of global lighting can also be a form of energy saving . For example, in some hotels the lighting inside the guest rooms can only be switched on when the guests are inside the room using a key card, and are switched off automatically when the guests leave the room taking the key card with him. 18
  19. 19. BENEFITS OF ENERGY CONSERVATION Reduced emissions Reduced effluent Conserves resources Savings add directly to bottom line Reduced maintenance Improved comfort Provides bragging rights 19