Upload
melissa-shapland
View
219
Download
0
Tags:
Embed Size (px)
Citation preview
Sustainable Hotel DesignSustainable Hotel Design
Presentation 2Passive Design
Group 5
Site AnalysisSite Analysis
• Site C– Panoramic Views– Better Access – “Easier” Excavation– Less Visual Impact– Greatest Water Source
Group AimsGroup Aims
• Passive Design
• Design out mechanical services as much as possible
• Demand Reduction
Group AimsGroup Aims
• Simulation– form, fabric, orientation
• Ventilation and Air flow
• Building Layout
Base Case
• ‘Shoe box’• 2 Storey • Floor Area 82x18 = 1476m²• Volume 82x18x6 = 8856m³• Glazing area 30% each façade• Construction U-value 0.3 W/m²k• Operations: occupancy,
lighting, equipment• Control – heating set point 15ºC
N
Orientation
• Does orientation make a difference?• 1.8% change in heating requirement from best to worst.
3369 kWh
Annual heating requirement
3432 kWh 3391 kWh 3384 kWh
Form
• Panoramic Views• Building Layout
Orientation L-shape
3416 kWh 3412 kWh 3438kWh 3438 kWh
• Confirms that orientation does not make much of a difference• Less than 1% change in heat loss
Glazing Areas
SOUTH 50% 3362 kWh
NORTH 30%
SOUTH 70% 3358 kWh
NORTH 30%
SOUTH 90% 3378 kWh
NORTH 30%
SOUTH 70% 3265 kWh
NORTH 15%
• South glazing 70% optimum
• Decrease in north glazing gives a decrease in heat loss
• A decrease in north glazing from 30 -15% only gives a 2.7% decrease in heat loss
NORTH
SOUTH
Marc SmeedMarc Smeed
Materials and Constructions
Construction Materials
• Base Case Material• Cavity Wall• U-Value 0.3W/m2K• 3412kWhrs
Lt Brown Brick 103mm
Cavity 50mm
Aerated Concrete
115mm
Insulation board
55mm
Construction Materials
• High insulation wall construction
• Has low U-value• U-Value 0.2W/m2K• 3324kWhrs
• Reduction 3.2%Lt Brown Brick
100mm
Glass wool 150mm
Air 50mm
Glass wool 150mm
Breeze block 100mm
Construction Materials
• High external Thermal mass + Well insulated
• U-Value 0.12W/m2K • 3291 kWhrs
• Reduction 4.2% Slate 100mm
Glasswool 150mm
Air 50mm
Glasswool 150mm
Inner leaf brick 100mm
Construction Materials
• High internal Thermal mass + Well insulated
• U-Value 0.12W/m2K • 3259 kWhrs
• Reduction 5%Lt Brown Brick 100mm
Glasswool 150mm
Air 50mm
Glasswool 150mm
Slate 100mm
Glazing
• Base Case material• Standard Double Glazing• U-Value 2.75W/m2K • 3412kWhrs
Plate Glass 6mm
Air 16mm
Plate Glass 6mm
Glazing
• Low-E glass• U-Value of 2.78 W/m2K• 3191kWhrs
• Reduction 4.4%
Low-e glass 6mm
Air 12mm
Low-e glass 6mm
Glazing
• Low-E glass Triple Glazing• U-Value of 1.78kW/m2K• 2991kWhrs
• Reduction 10.4%Low-e glass 6mm
Air 10mm
Low-e glass 6mm
Air 10mm
Low-e glass 6mm
Form and Fabric
• Combining:– Orientation– Optimum Glazing Areas– Materials
• Demand 2475kWhrs
• Overall demand reduction of - 28%
Bruce HenryBruce Henry
Heat Recovery and Natural Ventilation
Ventilation for hotels
Main criteria• As Quiet as possible.• Offer a high level of control to allow
for maximum comfort.• Increased ventilation for
kitchen/gym and swimming pool.• Acoustic isolation from other rooms
and corridors.
CIBSE Guide
• Highlighted areas of increased ventilation
Swimming pool = 1.35 to 2m3/s 26-30°C
Kitchen = >30ach 18-23°C• Other areasGym/Changing rooms = 10ach 24-25 °CBedroom = >1ach 20-24°CRestaurant = 10 to 15ach 21-22°COpen spaces = 10 to 15ach 20-27°C
Dehumidification
• Area of concern in swimming pool/gym and kitchen.
• Solution, increase supply of fresh.
• Consideration- to prevent condensation forming and provide occupants comfort
Reducing power consumption
1)Heat recuperator• Efficiency 60%
2)High efficiency fans3)Frequency inverter• Calculates air flow with respect to
dehumidification load, combination of 2 and 3 reduces power to 12.5% of maximum load
4)Heat recovery/Heat pump• COP=3, supply 80% of seasonal heating
requirement
Low e coating and removable shading
Prevailing wind
Bedroom 1 Bedroom 2
Under floor heating (ground source heat pump)
Ducts from atrium
Restaurant/ Office
Heat Recuperator
Corridor
Extractor fans
Winter Strategy
Channels feed back to atrium
Low e coating and removable shading
Prevailing wind
Bedroom 1 Bedroom 2
Restaurant/ Office
Heat Recuperator
Corridor
Extractor fans
Summer Strategy
Channels feed back to atrium
Greig PatersonGreig Paterson
Building DesignAnd Layout
Initial DesignInitial Design
N
Ground LevelGround Level
Circulation
Staff Zones
Food and Drink
Leisure
Plant
Rest Rooms
N
1st Level1st Level
Circulation
Bedrooms
N
ConclusionsConclusions
• Base Case Demand – 3412 kWh•After Form, Fabric and Orientation• 28% Reduction
• CIBSE Guide Part F– good practice 35% reduction on typical practice
• Base Case = Typical Practice
Thank You For Listening
Thank You For Listening
Any Questions?