6How much energy do hotels use? Hard to benchmarkDifferent metricsGuestnightsAreaServiced AreaGross Internal Area (or Built Up Area)Total Area (including balconies)Big varianceStar RatingClimateMetrics usedExcludes corridors, plant rooms, etc5 Star hotels & resorts in Abu DhabiSource: Energy Benchmarking study for Abu Dhabi Hotel Sector by Elie Gerges El Choufani (2010). Sponsored by Cundall.
7Energy (kWh / m2 of serviced space) Serviced Area = 300 kWh/m2Gross Int Area = 275 kWh/m24-5 stars280 to 320kWh/m23 stars260 to 280kWh/m22 stars240 to 270kWh/m2
8UK Display Energy Certificate Hotel Energy - UKUK Display Energy Certificate105kWh/m2 – electricity330kWh/m2 – gas435kWh/m2 – TYPICAL4 hotels in 2008 DEC database of 28,000 buildings
9Green Guidelines for Hotels Cundall Role:Green Building Guidelines for Abu Dhabi Tourism Authority (ADTA) for their new and existing hotels.Our initial focus will be in the areas of water, energy and waste reduction for the existing 113 hotels in Abu Dhabi.
105 star hotels in Abu Dhabi Gross Internal Area= 567 per m2 of net lettable area
23Hotel Room Concept Low Energy: Comfort + Air Quality 100% outside air heat recovery unit with heating coilNo mechanical coolingThermal mass to moderate temperaturesCeiling fan for improved summer comfortPassive DesignShading to suit orientationOpenable windowHighly insulated & sealed facadeUwalls = 0.22Uwindow = 1.8Air Tightness = 4m3/hr
24Variation (modular bathroom pod) Heating Hot Water circuit could supply chilled water for cooling.Fresh Air Supply could be tempered in peak summer conditions
25LEDs are improvingLED linear replacement lamps available today do not compete with linear T8 fluorescent lamps on the basis of light output, colour quality, distribution, lumen maintenance, or cost-effectiveness. Source: US Dept of Energy (2010)
26Which controls would you prefer? Simple?Complicated?OFFWarmerCoolingFresh Air OnlyCoolerHeating
27Reduce hot water use Hot water = 25%+ of hotel energy consumption Reduce water use:8l/min showers4l/min tapsHoxton Hotel, LondonInteresting towel sign(heavy) rain shower
28Guest education is important Notice in bedroom – Scandic Hotel, Sweden