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Arch6026 - Building Systems II (2000/2001) Energy and Environmental Systems for Green Buildings. Lecture 08 - Sustainable Management and Technology. Contents. Sustainable Management Resource Efficiency Water Conservation Waster Management Hong Kong’s Situation. The scale of man. Systems

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arch6026 building systems ii 2000 2001 energy and environmental systems for green buildings

Arch6026 - Building Systems II (2000/2001)Energy and Environmental Systems for Green Buildings

Lecture 08 -

Sustainable Management and Technology

contents
Contents
  • Sustainable Management
  • Resource Efficiency
  • Water Conservation
  • Waster Management
  • Hong Kong’s Situation
slide3

The scale

of man

Systems

within

systems

Multi-SCALE design with nature

sustainable management
Sustainable Management
  • It is about the management of ‘ecosystems’
    • natural ecosystems
      • e.g. water, atmosphere, soils, wetlands, forests
      • provide ecosystem services e.g. support of the food chain, harvesting of animals or plants, and the provision of clean water or scenic views
    • other ecosystems
      • landscape ecosystem
      • building ecosystem
      • human ecosystem
sustainable management1
Sustainable Management
  • Interactions between human and nature
    • land use
    • land cover
    • production
    • consumption
    • disposal
  • Sustainable construction
    • consider the influences on the ecological and social surroundings
sustainable management2
Sustainable Management
  • Sustainable design principles
    • economy of resources
      • energy, water, and material
    • life cycle design
      • consider environmental quality, functional quality and future values
    • humane design
      • reduce impact on nature
      • ensure human comfort and health
slide8

Energy issues

Water conservation

Efficiency

Renewable

Reduce

Recycle

Design

Pre-Building

Phase

Construction

Building

Phase

Operation & maintenance

Post-Building

Phase

Demolition/Disposal

Materials and systems

Waste management

Reduce

Select

Recycle

Reuse

Building life cycle and sustainable management

resource efficiency
Resource Efficiency
  • ‘Eco-efficiency’
    • combines the efficient use of both economic and ecological resources
    • sustainable management of natural resources
      • conservation and sustainable use of ‘biodiversity’
      • the ‘ecosystem’ provides services
        • e.g. purification of water supplies by aquatic life-forms
      • adoption of more sustainable patterns of production and consumption
slide10

Cost$/Benefits

analysis

The three legged stool of sustainability

resource efficiency1
Resource Efficiency
  • Aim
    • to reduce the demand and the costs for energy, water, and materials
  • Results
    • monetary savings which benefit the local economy
    • reduced environmental impact
    • conservation of resources
  • Integrated resources planning (IRP) & management
resource efficiency2
Resource Efficiency
  • Major factors
    • appropriate material selection
    • waste minimisation
    • recycling of building materials
    • efficient use of water
  • They also promote
    • increased durability of buildings
    • cyclical utilisation of materials
water conservation
Water Conservation
  • Methods
    • leak detection & prevention
    • efficient fixtures/appliances (e.g. low-flow toilets)
    • correct use of appliances (e.g. washing machine)
    • water use for landscaping & irrigation
  • Green design issues
    • greywater reuse and rainwater recycling
    • composting toilets & wastewater treatment
slide16

Crops growing

(for food or flowers)

Espalier

Using greywater for crops and landscape irrigation

waste management
Waste Management
  • Sources of solid waste
    • residential & commercial
    • industrial & agricultural
    • construction
  • Elements of solid waste management
    • waste generation, on-site storage, collection
    • transfer and transport
    • processing and recovery
    • disposal (e.g. landfill, incineration, composting)
waste management1
Waste Management
  • Green strategies
    • waste prevention
    • construction and demolition recycling
    • architectural reuse
    • design for material recovery
  • Important factors
    • on-site collection & storage space
    • sorting & separation (paper, glass, plastic, metal)
waste management2
Waste Management
  • Recycling organic waste
    • make use of organic nutrients in garbage, human waste, and sewage
      • for growing crops/flowers in gardens
      • for feeding to farms (e.g. ‘urban farming’)
    • food gardens and city farmers
hong kong s situation
Hong Kong’s Situation
  • One day in HK (popul. = 6.97 million) [1999]
    • fresh water consumption = 358 litre/person
    • electricity consumption = 13.9 kWh/person
    • food consumption:
      • vegetables 1,100 tonnes; fruits 1,800 tonnes
      • live pigs 6,200 heads; live cattle 170 heads
      • live poultry 190 tonnes; fresh eggs 200 tonnes
      • freshwater fish 120 tonnes; marine fish 170 tonnes
    • solid waste production = 18,040 tonnes
slide22

Projection of waste requiring disposal and population in HK

(source: Waste Reduction Framework Plan)

slide23

“Buy Green Buildings,

Get Free Balcony” - Mingpao

“Island West Will Become An

Enviro-friendly City” - Singtao

hong kong s situation1
Hong Kong’s Situation
  • Waste reduction framework plan
    • http://info.gov.hk/wrc/framework.htm
  • Recent efforts for building industry
    • waste minimization (e.g. sanitary fittings)
    • construction and demolition waste
    • flushing volume for flushing cisterns
    • refuse storage and material recovery

(* see also Practice Note for AP &RSE)