Post on 04-Apr-2018
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Zero Energy Building (ZEB):A building with zero net energy consumptionand zero carbon emissions annually.
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ZEB produces enough energy torun itself, without the need to tap on
power supply from the grid.
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To achieve energy self sufficiency,the ZEB is powered by a broad spectrum of solar
panels installed at many locations in the building.
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Photovoltaicsare best known as a method forgenerating electric power by using solar cells to
convert energy from the sun into electricity
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1st in South-east Asia retrofitted from an
existing building
Serve as a test bed for integration of GreenBuilding Technologies in existing buildings
Singapores Zero Energy Building
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Through a combination of Green building technology,
Clever building design that takes advantages
of natural ventilation and lighting (passivedesign),
Harnessing of solar energy
A total saving of $84,000in energy cost annually.
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How can we achieve zero energy?
Generally Built with significant energy-saving
features
Singapores ZEB
1. Building offices with an integrated design
that reduce energy consumption
2. Natural daylighting and ventilation systems
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ZEB Offices 3 general principles to reduce energyconsumption
Passive designs (e.g. light pipes, light shelves)
Active solutions (e.g. personalized ventilation,
displacement cooling)
Active controls (e.g. motion sensors, daylight
sensors)
Example: daylight sensors
Detect sufficient daylight automatic
reduction of artificial lighting optimize energy
usage
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Natural Daylighting and Ventilation Systems Built in devices such as light pipes and light
shelves
Example: light shelves
Highly reflective surfaces that reflect daylightdeep into space
Help to reduce the use of artificial lighting at
daytime reduce energy consumption
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Achieving Zero Energy (Other General Methods) Nighttime illumination done with fluorescent
lighting and LED lighting
Uses 1/3 or less power than incandescent
lights, without adding unwanted heat
Utilise efficient appliances to lessen
miscellaneous electric loads
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Enhancing the water efficiency of a building Water Efficient Fittings
Water Efficient Flushing System
Dual flush low capacity flushing cisterns should be used
Urinal flush valves that use not more than 0.5 litres of water per
flush should be used
Water Efficient Fixtures
Install self-closing delayed action taps at all wash basins
Water Efficiency Labels
Use water fittings with Water Efficiency Labels
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Water Efficient Landscaping Water Efficient Plants
Use drought resistant plants or plants that fit naturally into the
existing climatic conditions
Limit amount of turf area
Irrigation
Recycled water, NEWater or rainwater should be used for
irrigation
Water Efficient Irrigation System
Irrigation system should be zoned Water efficient irrigation system such as drip irrigation system
should be used
Automatic controller and rain sensors should be incorporated
Enhancing the water efficiency of a building
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Drip irrigation system uses 30% to 50%
less water than sprinkler irrigation
Achieve savings of 35% of water a year
with the incorporation of rain sensors
Enhancing the water efficiency of a building
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Metering & Accounting Sub-meters should be installed on all major water
systems
By monitoring water usage, water saving opportunities can be
identified
Main and sub-meters should be linked to a building
management system (BMS)
Enhancing the water efficiency of a building
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Cooling Tower Water Consumption NEWater should be used for cooling tower make-up water
Condensate water from AHUs or FCUs could also be
used
Enhancing the water efficiency of a building
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Cooling Tower Water Consumption Better Cycles Of Concentration
Higher concentration cycles reduce make-up and blow-down
water requirements and hence reduce the cost of operation
Efficient Drift Eliminators
Control unnecessary loss of water and help reduce the
nuisance of water spraying near the tower
Enhancing the water efficiency of a building