john a. herbert 許 約 翰 - beam society · 2014-07-02 · rationale 1. water seepage app105 2....
TRANSCRIPT
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1 1
BEAM Affiliate Training and Examination
25 June 2014
John A. Herbert
許 約 翰
BEAM Professional
Panel Chair Water Use Aspects, Technical Review Committee
Chairman BEAM Technical Review Panel
Director BEAM Society Limited
Water Use Aspects (WU)
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Construction, Operation, Maintenance ALL require water & EI
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Water Use
Intent • Water is a limited and precious resource
• Raise awareness of the issues related to Water usage
• Encourage GREEN FEATURES
• THINK about water conservation
• Encourage use of 3rd party WELS labelling schemes
• Recognise building owners who implement conservation
that benefit the environment
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Water Use
Green Features
• Twin Water Tanks
– Periodic Inspection
– Periodic Cleaning
– No INTERUPTION
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Water Use
Green Features
• GreyWater
– Contains bacteria, detergents, phosphates, etc.
– Likely water treatment
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Water Use
Green Features
• Rainwater Harvesting
– Alternate water source, make-up water for cooling
towers, irrigation, fountains, etc.
– Relieve pressure on Municipal Drainage system
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Water Use
Green Features
• WELS
– Fittings Taps, Showers, Mixing taps
– Voluntary Label
– 1 = highest/best
– Refer to www.wsd.gov.hk
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Water Use
Green Features
• High Tech Irrigation System
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Water Use
Green Features
• QWRBS
• Maintenance
• WSD scheme
– Quality
– Water
– Recognition
– Scheme
– Building
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Water Use
Green Features
• No Plastic Water Bottles
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Water Use
Water Cycle (or Hydrological Cycle)
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Water Use
Catchment Local Yield
13 mcm - million cubic metre
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Water Use
Spot the difference
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Water Use
Hong Kong Water History
1957 Salt water to Shek Kip Mei & Lei Cheng
First in Hong Kong
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Water Use
Hong Kong Water History
1960
Supply Agreement Shenzhen Reservoir
Importing Water
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Water Use
Hong Kong Water History
1964
Severe Water Rationing
4 hours service, every 4 days
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Water Use
Hong Kong Water History
1965 Dongjiang 68.2 mcm/year Supply
Imported
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Water Use
Hong Kong Water History
1973 Completion of Plover Cove Reservoir
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Water Use
Hong Kong Water History
1982 Water Rationing ended
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Water Use
Hong Kong Water History
1989 Dongjiang 1,100 mcm/pa Supply
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Water Use
Hong Kong Water History
22
2003 Aquaduct commissioned
Covered supply to HK
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Water Gathering
Grounds (HK)
Impounding
Reservoir
Water Treatment Works
Primary
Service
Reservoir
Service
Reservoir
To
Consumers Pumping
Station
Service
Reservoir
Pumping
Station
Consumers
Consumers
Raw Water
From Dongjiang
Water Service
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Service Reservoir
Consumers
Consumers
Pumping
Station
Consumers
Consumers
Non-return
Valve
Sea
Level
Sea Wall
Sea Water Service
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Water Use
BEAM Rating Tools
• Each rating tool (NB, EB, BI) targets water and effluent
conservation
• The criteria are similar, with some subtle differences
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BEAM New
Building
(NB)
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Water Use
WU NB Weighting
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WuP1 Water Quality Survey
Rationale
1. Provide quality potable
water for all building
users
2. Parameters QWRSFB
Requirement
1. Water Sampling
2. Locations (all tanks and
farthest outlets in the
distribution system)
3. Schematic and layout
drawings c/w sample
points highlights
4. Method statements,
sample handling, etc.
5. Laboratory reports
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QWRSB
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Water Use
QWRS Testing Parameters
pH:
Colour:
Turbidity:
Conductivity:
Iron:
E. Coli:
Total Coliform:
6.5 - 9. 2
≦15
≦3
≦300
≦0.3
NIL
NIL
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WuP2 Water Saving Performance
Rationale
1. Minimize adverse
environmental impacts
Requirement
1. Summary Table
2. Flow rate calculation at
working pressure
3. Schematic and Layout
drawings
4. Catalogue/cut sheets
5. Use baseline data
provided in BEAM
manual
6. Records, Cx data,
delivery notes, site
photographs, etc.
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Water Use
Green Features
• Water
• Efficiency
• Labelling
• Scheme
• (WELS)
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Water Use
WuP2 Common Mistakes
• Pressure
– Fittings water flow rate declared (low flow taps,
showers, etc.) to based on working water pressure
• Calculation
– baseline/project case comparison incorrect
• Alternate Authority
– Inadequate justification for source of alternative data
should be CIBSE guide, IOP manual, ASPE, etc.
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Water Use
P = ρ g h
height (h)
tank
outlet
outlet
65.5 mpd
29.5 mpd
99.0 mpd
WuP2 Common Mistakes
h bar flow rate
l/min
32.5 3.25 14 68.5 6.85 20
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WuP2 Calculation format D
evic
e
du
rati
on
(s
eco
nd
s)
Dai
ly u
se p
er
occ
up
ant
Wo
rkin
g P
ress
ure
(b
ar)
water flow rate @ working pressure
daily consumption per person
(L/min) (L/min) (L) (L) Baseline Built Baseline Built
Tap 45 10.00 5.00 3.00 6.00 4.00 5.00 3.33 Tap 46 15.00 1.00 3.00 8.00 4.50 2.00 1.13 Tap 47 10.00 5.00 1.00 6.00 2.50 5.00 2.08 Tap 48 15.00 1.00 1.00 8.00 3.00 2.00 0.75
daily consumption per person 14.00 7.29
occupants 30.00 30.00
Operating days 365.00 365.00
annual consumption (litres) 153,300.00 79,843.75
annual consumption saved (litres) 73,456.25
percentage water saved 48%
Same for baseline
& built case
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Wu1 Annual Water Use
Rationale
1. Reward higher
performance. Annual
water saving of 20%,
25% or 30% earns 1, 2,
or 3 credits respectively;
Requirement
1. Same as WUP1
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Wu2 Monitoring and Control
Rationale
1. Water Seepage APP105
2. Early water leakage
detection to minimize
waste water
3. Encourage design
1. No embedded piping
2. exposed pipe leakage is
self evident
4. Coverage for ALL areas
inside building(s)
Requirement
1. Summary Table
2. Schematic and layout
drawings (water)
3. Schematic and layout
drawings (detection
system)
4. All Concealed piping
including: Meter rooms,
pipe ducts, risers, under
floor, plant rooms, etc.
5. Record, log book, BMS
output, photographs, etc.
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Water Use
Wu2 Common Mistakes
• Coverage, Coverage, Coverage
– Detection system shall cover all concealed piping
including all plant rooms, ceiling voids, under raised
floors, pipe ducts, water meter rooms, risers, and all
other areas with concealed water pipework
– Exposed/surface mounted piping means any leakage
is self evident
– Underground piping is excluded from Assessment
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Wu3 Water Efficient Irrigation
Rationale
1. Assess and minimise
environmental impacts
Requirement
1. Irrigation system which
does not require
municipal water after
establishment period
2. Highly efficient irrigation
technology
3. Greywater/Rainwater
harvesting installation
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41
Rainwater Greywater
sewer
roof
wash
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Wu4 Water Recycling
Rationale
1. Alternative source for
potable water
2. Reuse water from
showers, washbasin,
condensate (not black
water)
Requirement
1. Greywater/Rainwater
harvesting installation
2. Calculations potable
water conservation
3. Schematic and layout
drawings
4. Catalogue/cut sheets
5. Records, log book,
meter readings, site
photographs
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Wu5 Water Efficient Appliances
Rationale
1. Appliances are
dishwasher, washing
machine, etc. (not
taps/showers)
2. Reduce potable water
consumption
Requirement
1. Calculation (BEAM
Baseline data)
2. Schematic and layout
drawings
3. Appliance information
WELS label, catalogue,
and data sheet
4. Records, delivery notes,
site installation
photographs
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Wu6 Effluent Discharge
Rationale
1. Reduce impacts
resulting from sewerage
discharge to lower
burden for municipal
waste handling systems
by 20%
2. Harbour Area Treatment
Scheme (HATS)
Requirement
1. Summary Table
2. Schematic and layout
drawings
3. Calculation (only WC
and urinals considered)
4. Technical information
WELS label, catalogue,
and data sheet
5. Records, delivery notes,
As fitted drawings,
record photographs
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Water Use
Harbour Area Treatment Scheme
• HATS
45
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Existing
Building
(EB)
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Water Use
INDOOR
ENVIRONMENTAL
QUALITY
ENERGY USE
SITE ASPECT
WATER
15%
MATERIALS
ASPECTS
Category Weighting Wu EB
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Water Use
Different between NB and EB
Wu P1 Water Quality Survey
Wu P2 Minimum Water Saving Performance
Wu P3 Water Conservation Plan
Wu 1 Annual Water Use
Wu 2 Monitoring and Controls
Wu 3 Water Use for Irrigation
Wu 4 Water Recycling
Wu 5 Water Audit
Wu 6 Effluent Discharge to Foul Sewers
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Water Use
Different between NB and EB
Wu P1 Water Quality Survey
Wu P2 Minimum Water Saving Performance
Wu P3 Water Conservation Plan
Wu 1 Annual Water Use
Wu 2 Monitoring and Controls
Wu 3 Water Use for Irrigation
Wu 4 Water Recycling
Wu 5 Water Audit
Wu 6 Effluent Discharge to Foul Sewers
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EB WuP3 Water Conservation Plan
Rationale
1. Reduce water
consumption
2. Promote continuous
development
3. Encourage active
management for water
resources
Requirement
1. List responsible person
2. Report
3. Director signature
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Water Use
EBWuP3 Suggested Content
– Organization chart
– Communication channels (staff, building users, etc.)
– Water monitoring
– Water Consumption
– Action Schedule to reduce water consumption
– Quantification of water savings
– Building owner director endorsement
– Prepared by E&M engineer
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EB Wu5 Water Audit (BONUS CREDIT)
Rationale
1. Raise awareness
2. Encourage reduced
water consumption and
improved maintenance
Requirement
1. List Responsible person
2. Written Audit report
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Water Use
EBWu5 Suggested Content
– Objective, reduction of all types of water consumption,
raising awareness
– Scope, Overview and detail of the scope of work,
including exclusions i.e. tenants areas
– Operations, Overview and details of the building
operation
– Maintenance, Overview and details of maintenance
activities, deferred maintenance
– Drawings, AS FITTED schematic and layout drawings
– Records, Inventory, records for all areas of water use,
regular monitoring, consumption, O&M, etc.
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BEAM
Interiors
(BI)
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Water Use
BEAM Interiors (BI)
• Designed for fitout renovation projects
– Lower Environmental Impacts
– Recognition
– Water Conservation
– Education
– Raise Awareness
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Water Use
BEAM Plus Interiors (BI)
• Applications
– Offices
– Hotels
– Retail
– fit-out projects
– Related areas of host building
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Water Use
Wu BI
Wu 1 Water Quality Survey
Wu 2 Minimum Water Saving Performance
Wu 3 Reduced Effluent to Sewer
Wu 4 No Bottled Water
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Water Use
BU Wu Summary
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BI Wu1 Water Quality Survey
Rationale
1. Good Water Quality
2. Minimise demand for
plastic drinking bottles
Requirement
1. Similar to NB
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BI Wu2 Water Saving Performance
Rationale
1. Minimize adverse
environmental impacts
2. Encourage WELS
Requirement
1. Same As NB except 1
point for 30%, or 2 points
40% water saving
Duration - IR sensor
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BI Wu3 Minimise Effluent Discharge
Rationale
1. Minimize adverse
environmental impacts
Requirement
1. Similar to NB
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Plastic Hong Kong Beach
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BI Wu4 No Bottled Water
Rationale
1. Raise awareness
2. Reduce water bottles
usage
3. Reduce plastic waste
4. Encourage water coolers
with potable water
Requirement
1. List Responsible person
2. Layout plan with
equipment
3. Technical/cut sheets
4. Record photographs
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Water Use
Keywords
• QWRS - Quality Water Recognition Scheme
優質食水認可計劃
• WELS - Water Efficiency Labelling Scheme 用水效益標籤計劃
• HATS - Harbour Area Treatment Scheme 淨化海港計劃
• Legionella 退伍軍人病桿菌
• Potable Water Storage Tanks 食水缸
• Rainwater Harvesting 雨水收集
• Flushing Water / Sea Water 沖廁水 / 海水
• Greywater 中水
• Irrigation 灌溉
• Periodic Inspection 定期檢查 64
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Water Use
T +852 3610 5700
F +852 3996 9108
www.beamsociety.org.hk
1/F Jockey Club Environmental Building,
77 Tat Chee Road, Kowloon, Hong Kong
香港九龍塘達之路77號賽馬會環保樓1樓
65
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