Week 10 - Material, water conservation, and facilities Flashcards
What is the HKGBC Green Product Accreditation and Standards (HK G-Pass)?
- give buildings green rating
- platium, gold, silver, bronze, green
How is conservation of materials and water considered in green building assessment?
- Assessment of integrated environmental-economic performance of green buildings systems
- Environmental performance looks at material scquisition, product manufacture, transport, installation, operation, and recycling/waste management after demolition
- Economic performance evaluated by cost of everything over whole building life period
- Accounted in Life Cycle Cost (LCC)
What needs to be considered for materials of pipework?
Problem——————–
- Rust and deterioration
- Risk of contamination
- Leakage causes, cost expense, loss of resources
Replacement —————–
- Suspension of service
- Inconvenience and latent problems (invisible problems)
- Lifespan - 15 years usually, sometimes 20
- Building occupying period (45 years) - two replacements required
- Material limitation
- New tech may resolve some of this + active maintenance strategy
What is imporant about material development?
- Water supply pipe material development beind world development
- Concern of life, appearance, cost, ease for installation
- Must balance development cost and material cost
- Consider adapting advanced tech for building materials
Study co-relationship between entire system
—- Improve: - Resistance to attacks
- Nicely appear to enhance aesthetic value
- Cheaper investment on capital cost
What’s the role of nanotech in all of this?
- Nanotech is science, engineering and tech conducted on the nanoscale
- Can be used across multiple fields
- Can be used as internal and extrernal coating for pipe materials
——> examps - ppr nano polypropylene water pines
- nano anti-bacterial PPR composite pipe
advantages—————————-
- high hardness and abrasian resistance
- high temp stability
- cost-effective
- low surface energy and flow resistance
What are importnat things to consider with water resources?
- Raising living standard increases water consumption
- Average water consumption is 130 liters per person per day in Hong Kong
- Seawater is used for flushing in most of hong kong
- Water saving education conducted by Water Conservation Scheme
- Alt water sources
– seawater desalination
– water reclamation
What is the total water management strategy?
- Installation of meters
- Installation of water saving devices
- Education in schools
- Awareness campaigns
- Intelligent systems and distrbution
- Studies
- Replacement and rehabilition
- Desalination plant (Tseung Kwan O) (thru reverse osmosis using high pressure)
How is water reclamation done?
- Greywater
- Rainwater
- Sewage
—> Reclaimed
Risks ——————————
- Contamination possible – that’s why catchment areas are considered and filtering is heavy duty
- Also screening implemented
BEAM Plus ——————————
- Efficient water irrigation
- Water recycling
What are some methods of water management?
Voluntary Water Efficiency Labelling Scheme (WELS)—————————-
- Grade 1 - 4
- Have grading schemes for the following systems:
- Showers for bathing
- Water taps
- Washing machines
- Urinal equipment
- Flow controllers
Management to prevent water loss—————-
- Maintenance of systems
- Can have significant loss of money
- Water Intelligent Network (WIN) —————–
- implement mintoring and sensing equipment
- collects data –> info analysis –> insight –> then people determine proper measures
How can individuals save more water?
- Save water in bathing and getting better shower head
- Flushing water saving - reduce capacity of flushing, double infra-red sensors for flushing, avoid auto-flushing and stop after certain time
How can innovation and discovery occur?
products, processes, services, technologies or ideas thatare readily available to markets, governments and societies
What is the Best Practices for Operation and Maintenance Service?
- Aims to promote collaboration
- Adapts best practices and innovative tech throughout building life-cycle
- EMSD –> 8 O&M best practices booklets
- Have 15 key attributes under 5 categories:
Design, construction and commissioning, operation, maintenance, alteration addition and replacement - Categorized under 3 different levels: general practice, good practice, and best practice
—> levels mostly related to how well they monitor and collect data and info and what they do with it to manage it all
What is the bare minimum requirement for these systems for solar photovoltaic systems?
- do best to make the system work and have routine maintenance
- notification of testing or shutdown of system
- electrical work carried out with risk assessment beforehand
- testing instruments calibrated properly
- safety precautions
What does the Building Services Operation and Maintenance Executive Society do?
To promote the general
advancement of the
discipline, practice and
management of building
services operation and
maintenance; and to raise
the general public’s
awareness of the profession
and its contributions to
society and the status of its
practitioners.
