GREEN MARK TOUR ITINERARY
4 SEPTEMBER 2018 • TUESDAY (2.00PM - 6.00PM)
- Registration Time: 1.30pm
- Venue: Level 3, Registration Counter, Sands Expo & Convention Centre, Singapore
- Things to bring: Your IC, Conference badge, comfortable shoes and water bottle.
- Important note: As there might be communications required before the tour, please provide a contactable mobile phone in your registration for the Green Mark tours.
Tours conducted in English:
|Route 1||Marina One East tower|
|Esplanade - Theatres on the Bay|
|Route 2||Lee Kong Chian School of Medicine, NTU|
|Schneider Electric South East Asia|
|Route 3||Guoco Tower|
|NTU - Learning Hub North (The Arc)|
|Route 4||DUO Tower and DUO Galleria|
|Abbott Laboratories (Singapore) Pte Ltd|
|Route 5||J Ops @ JTC Summit|
|Jurong Town Hall|
|Route 6||Northpoint City|
|Universal Studios Singapore|
Tours conducted in Mandarin Chinese:
|Route 3A||NTU - Learning Hub North (The Arc)|
|Route 6A||Universal Studios Singapore|
This is an 8501 sqm office project at Level 21, 22 and 23 of Duo Tower.
List of other prominent green features:
- Extensive use of Enlighted system for saving energy in the office and space usage evaluation
- Air Harvesting for better indoor air quality in meeting rooms
- Internal staircases between floors
- Use of jet diffusers for double volume central breakout area
- Smart locker system
The concept of the development is to create a unique space for people to work, live and play, achieved by offering a sustainable mix of uses: interweaving office and residential with retail as well as leisure and commercial components in such a way that they complement each other. Situated just outside the CBD area, Duo is primed to be one of the most anticipated projects in the area which targets to achieve environmental sustainability through benchmarking with the GOLDPLUS rating under Singapore’s Building & Construction Authority (BCA) Green Mark Scheme. With the high rating under the scheme, this mega-project will demonstrate exceptional energy and water savings, good indoor environment quality and good practices in environment protection throughout the project life cycle.
The façade system of the building was designed to reduce solar heat gain by minimizing Thermal Performance of Building Envelope (RETV), which reduces the indoor cooling demand. Glass selected is double-glazed low-e glass which comprises of low thermal conductivity gasses between panels to reduce heat transfer through the building envelope. With hexagonal façade design, the shading provides further reduction of solar heat gain at the fenestration. The window to wall ratio (WWR), which affected the RETV is lowered to approximately 0.63 but not minimized to achieve a balance of aesthetic features of the building outlook as well as limiting the sight to the beauty of city.
The mechanical and electrical design for the development was optimized to reduce energy consumption. Air-conditioning system for all the residential units were designed with 4-tick air-conditioners under the Singapore Energy Labelling Scheme, which saved approximately 29% of energy. In addition, the lighting energy consumption was designed with energy efficient light fittings such as T5 fluorescent lights at car parks, compact fluorescent and metal halide lighting at exterior and LED strips at the facade. Such lightings were extensively used in the development. Motion sensors were implemented within common facilities such as staircase half landings and common toilets to reduce wastage of energy at the time of no occupancy. Moreover, energy efficient lifts with Variable Voltage Variable Frequency (VVVF) motor drive with sleep mode were used in the development. The lifts were also designed to be regenerative, which has the capability to capture waste energy generated from lift motor when it brakes and such energy was channelled toward the building grid for other usage. With VVVF, sleep mode and regenerative drive, the energy consumption used for lift was about 28% compared to the conventional lifting system.
Efficient ductless mechanical ventilation system was implemented within the basement car park. In addition, Carbon Monoxide (CO) sensors will be used to monitor the carbon monoxide level and to control the jet fans operation when a high CO level content is detected. Air contaminants would be kept a low and safe level, dangerous gas like carbon monoxide to be kept lower than 25 ppm of concentration.
Heat recovery devices were used together with the air conditioning condensing units of the gym so that the waste heat from the air-conditioning system could be utilized to heat up the water inside the water heater of shower facilities in the toilet.
Mandatory water efficient fittings of at least “Very Good” rated will be installed in each dwelling unit to reduce water usage. Also, private meters were fitted to monitor major water usage such as swimming pools, landscape irrigations and car parks. Any spike hike of water usage pattern could be investigated for causes like leakage or other malfunction of water handling equipment. Another great effort by the developer in promoting water efficiency is that the provision of water efficient washing machine in all dwelling units. In addition, rain water would be harvested from siphonic rainwater drainage system and stored in a tank for irrigation purpose, reducing usage of potable water
As part of the developer’s effort towards environment protection. “Green” and sustainable materials were used. Examples like green cements, recycled concrete aggregate, and washed copper slag would be used extensively for this construction work. Furthermore, low VOC paint and environmentally friendly adhesives and products certified by Singapore Green Labelling Scheme would be used for the finishing of dwelling units and common facilities, reducing the impact on the environment.
As part of the efforts to achieve energy sustainability, recycling facilities were provided to collect recyclable waste. In addition, to promote green transport, the residential building was located within the proximity of the underpass of Bugis MRT. In addition, the development will be linked with the underground pedestrian network to the MRT station. Approximately 67 bicycle lots were provided to encourage usage of bicycles to reduce reliance on motor vehicles, reducing vehicle emissions to the environment. Additionally, 5 electric car charging stations were also provided for residents as part of green movement.
Extensive greenery was provided in the common areas of the development. The landscape for this development includes hard and soft-scape design such as rain garden and dense greenery to complement existing conserved rain trees. Landscaping was not limited to natural ground floor but also on-structure, creating a layer of green roof acting as green lungs to the residents. The green roof would help to reduce the solar heat gain to the units below the roof as the thick soil and plants allowed lesser conduction heat transfer through the roof from atmosphere.
Other Green Features
Apart from the provision of water efficient washing machine, green roof, and siphonic rainwater discharge system, other Green features like car park guidance system, compost bins for organic waste, and pneumatic waste collection system would also be incorporated in the development of the residential building. In addition, energy efficient refrigerator.
Esplanade, a world-class performing arts centre made up of two rounded glass domes fitted with over 7,000 triangular aluminium sunshades. The space features a 1,600-seat Concert Hall and a 2,000-seat Theatre. Esplanade also houses a Recital Studio, Theatre Studio, an Outdoor Theatre, Annexe Studio and visual art exhibition spaces. In addition, it has cafes, restaurants and shops.
Ensuring energy efficiency is important as Esplanade operates on a 24/7 basis. Esplanade has established a 3-years energy conservation plan to improve the existing equipment’s efficiency and further reduce the building energy consumption. The focus of the energy conservation plan is to achieve the key target of approximately 16% of energy savings by 2020 (benchmarked against 2017 consumption).
One of the major energy conservation plan is to retrofit the existing chiller plant. Esplanade has adopted a performance-based procurement contract for chiller plant retrofitting and maintenance. The new chiller plant (Water-Cooled Chilled-Water System) will be retrofitting to achieve 0.615 kW/RT. This is a 6-years Performance Guarantee Contract where the awarded Contractor is required to guarantee and maintain the chiller plant’s operational system efficiency of 0.615 kW/RT (monthly). The chiller plant is also equipped with Variable Speed Drives (VSDs) for the chilled-water pumps, condenser water pumps, and cooling tower fans. The new chillers, VSDs, cooling towers and auto-condenser tube cleaning system are energy efficiency products that are certified by Singapore Green Building Council (SGBC).
Halogen lamps are mainly used for Auditorium in Concert Hall and Theatre areas due to special audio requirement. While there is extensive use of energy efficient T5 fluorescent, PLC and LED lamps at common areas, plant room, back of house areas, carpark and offices. Contract has been called to improve the lighting system efficiency by replacing the existing Metal Halide and Halogen lamps to LED lamps.
CO2 sensors have been integrated to control the ventilation demand for all Air Handling Units (AHUs). This help to reduce the fresh air intake by reducing the dampers opening when human occupancy is low hence reduce cooling load demand. CO sensors have also been integrated with the mechanical ventilation fans to monitor the CO level in the Carpark for better energy conservation.
Esplanade continuously seeks improvements to reduce the water consumption through day to day operations and maintenance of the facility. A 3-years water conservation plan has also been established to further reduce the building water consumption. The water conservation plan is to achieve the target of approximately 4% of water savings by 2020 (benchmarked against 2017 consumption).
Esplanade is a PUB certified Water-Efficient Building which signifies the installation of water efficient fittings and adopting water efficient flow rates. Water fittings in toilets are progressively replaced to PUB certified WELS 3-ticks rating. Water saving posters have been pasted in toilet to create water savings awareness among building occupants and visitors.
Through the retrofitting of the existing chiller plant, the make up water usage for cooling towers will be reduced significantly due to the reduction of cooling tower’s evaporation loss. The new cooling towers’ water treatment system will further reduce the cooling towers’ blow-down frequency by increasing the cycle of concentration to at least 10 COC.
Private water sub-meters have been installed to monitor water features, general washing, F&B and cooling towers’ water consumption. Rainwater is harvesting for irrigation, water features and cooling towers usage. Additional water sub-meters will be installed to monitor, report and further breakdown the rainwater consumption for cooling towers.
Waste recycling is encouraged through recycling bins placed at Retail and Concourse areas. There are sorted into general waste, paper, plastic and aluminium. Waste recycling and minimization posters have been pasted at offices and pantry areas to promote waste minimization as well. There is waste recycling program in place, where the recycling waste is quantified and monitored monthly for continuous improvement.
Esplanade is committed to purchase products which are made of environmentally friendly and sustainable materials as certified under Singapore Green Labelling Scheme (SGLS) or Singapore Green Building Product (SGBP) Labelling Scheme. As of now, wheel stoppers and tissue papers used in Esplanade are sustainable products certified by SGLS. Esplanade will continuously to source and purchase products which are made of environmentally friendly and certified by approved local certification body.
Indoor Environmental Quality
Indoor Air Quality (IAQ) audit has been conducted in occupied areas such as Offices, Concert Hall, Theatre, Retail, etc to ensure a good indoor air quality environment. Corrective actions have also been taken as per IAQ auditor’s recommendation to provide a safe and clean environment to occupants.
Air handling units (AHUs) in Esplanade are progressively being replaced and all new AHUs are fitted with high efficiency air filters (MERV 14) to maintain good indoor air quality. There is room temperature display in offices and meeting rooms. Occupants can have a gauge of the air temperature within the offices and meeting rooms, so that they can adjust the thermostat control accordingly or call Facilities Management to adjust the temperature to achieve the desirable thermal comfort.
Low VOC paints have been used during existing building maintenance / renovation works as well as for all the internal walls to promote a healthy indoor environment.
Guoco Tower is a proposed mixed development comprising erection of 19/64-storey building with a 6-storey commercial and car park podium, 14-storey hotel, 32-storey office and 26-storey residential tower with 189 units and 3 basement commercial and car park on Lot 876K TS 03 at Peck Seah Street/Choon Guan Street.
Extensive efforts have been taken by the design team to minimise the development’s impact on the environment. One of the highlights of the building design is its energy efficient features. The building envelope is designed with low-e DGU with shading devices on all orientations to help reduce the cooling load of the building. The envelope thermal transmittance value of the development is only 34.45 W/m2 which is much less than the mandatory requirement of 50 W/m2.
The commercial portion of the building incorporates centralized water cooled centrifugal chiller systems which contributes to substantial energy savings. In addition, the building will be installed with solar PV panels at strategic locations to maximize solar energy harvesting.
The building also features a non-air-conditioned canopied public space called the City Room at ground level which serves as part of the landscape and is designed to harvest solar energy from its BIPV roof. It provides a thermally comfortable semi outdoor space to the public. The design team conducted several building physics studies including shadow analysis, wind flow analysis and thermal comfort studies to make the space usable without any active cooling system. The space will be served by high volume low speed fans to cater for wind-free days and times of the year.
The building’s irrigation system relies heavily on rainwater which is collected from the rooftops and treated on site. Collected rainwater is used for irrigation. The system also utilizes NEWater for cooling tower make-up water and for toilet flushing. Air-conditioning condensate water is also recycled and reused for cooling tower make-up water. With the incorporation of these features, the development is able to save on a large amount of potable water usage.
The development also features other notable green features such as the use of green labelled products, use of energy efficient light fittings and use of motion and daylight sensors for lighting control.
The JTC Summit (GFA = 58526.99sqm) is a 32-storey and 3 basements office building located in the heart of Jurong East Central and houses the corporate headquarters of JTC.
The main objective is to create awareness among occupants on environmental conservation through the practice of these guidelines in their everyday activities. This habit that facilities management will adopt in the future will be based on the philosophy, policy and protocol set out as follows:
To create a sustainable society for future generations, JTC Summit seeks to combine ongoing innovations in environmental technology with environmentally sound business practices. To promote greater environmental awareness, JTC Summit organized talks and movie screenings to promote the green message. Experts from the Singapore Environment Council were also invited to share their knowledge on reducing our carbon footprint with staff. Within JTC, they initiated several community projects such as Green IT Projects, Green Office and Green Practices to nurture a sense of respect and concern among our staff for the environment.
A list of building equipments which contribute to the highest usage of energy have been listed out. This sets the protocol to control and minimize such usage.
As such, energy efficiency is achieved in this development without compromising indoor comfort for occupants. There will be constant monitoring on the amount of electrical consumption and how to deliberately conserve and manage such usage through proper measures and improvement with the intention of achieving energy savings of more than 20%. The clever use of technological features in energy-consumed equipments will result in cost-savings for the management.
Air Conditioning System
The air conditioning system is adopting centralized chilled water system with system efficiency of 0.65kW/RT. All the chilled water pumps, condenser water pumps and cooling towers are equipped with variable speed control (VSD) according to building load. Tube cleaning system is also installed for all the chillers to maintain optimum efficiency of chillers by cleaning the condenser tubes.
All lifts are installed with Variable voltage and variable frequency (VVVF) motor drive with sleep mode features to conserve energy. One of the most commonly used aspect among occupants, it is important to ensure that lifts are operating efficiently as part of the efforts to reduce energy usage.
Energy efficient lightings such as T5 & LED lights are installed for lobby and general areas.LED lighting reduced power consumption as an LED circuit has 80% efficiency as compared to incandescent bulb that operates with only 20% efficiency.
Energy Efficient Features
Energy Efficient Features such as motion sensors to detect any presence of occupants using motion sensor is used. Equipments will only be activated only when occupant presence is detected. Auto condenser cleaner are installed as an effort in energy conservation.
Water Efficient Fittings
To ensure water systems and consumption are monitored and maintained properly at common areas and encourage water savings through proper maintenance of water efficient fittings. Most of water fittings such as basin taps, mixers, flushing cistern and shower are certified “Excellent” under the Water Efficiency Labelling Scheme (WELS). These translate into cost-savings for occupants and discourage excessive use of water through WELs rated fittings.
All major water uses are installed with sub-meters for the purpose of meter-reading to monitor water usage of each tap so as to control any over usage or leakage. Readings are done on a weekly basis and tabulated each month to show the overall consumption pattern.
Materials used for building is certified under Singapore Green Labelling Scheme (SGLS) recycled contents. Those materials are raised floor, ceiling, carpet and etc.
Waste & Refuse Recycling Guidelines
- All paper, plastic, glass and cans or other metal waste are to be disposed of at the recycling bins provided, according to the respective bins marked.
- Collection of bins by the refuse collector is carried out once or twice a week depending on the quantity disposed. No waste shall be left in the lift lobbies, staircases or driveway.
- All cleaners should be instructed to follow the above procedures carefully. They should be taught to consciously separate the waste and dispose them for recycling.
- For bulky materials such as left-over renovation materials, partitions, cabinets, discarded wooden pallets and other office or domestic furniture, they should not be left at any corridor or vacant space. These items should be disposed off at the bulk bins provided.
Indoor Environmental Quality
Indoor Air Pollutants
Paint that is low in VOC is used as a sustainable material which helps minimise indoor air pollutant.
Building Management & Operations
The facilities management is committed in maintaining the building with optimisation of energy and water usage in mind. Constant education programs to promote recycling will be done through many means. Maintenance of features and equipments will be done constantly to ensure that these equipment’s performance.
- Put computer monitors to sleep rather than use screen savers
- Turn off monitors when they are not in use for periods of more than 30minutes
- Turn off personal computers if they are not in use for 2hours or more
- A LCD (liquid crystal display) monitor will cut down 70% of energy use as compared to a CRT (cathode ray tube) monitor
- Make sure external doors and windows are closed and do not allow the cool air to escape from your office
- Lights and machines give off heat. Remember to turn them off when they are not in use to reduce your office cooling requirements
- Install motion sensors, dimmers, timers, etc for the lightings. Otherwise, ensure that all lights are switched off when nobody is in the room
- Reduce your electricity bills by having one multipurpose machine for photocopying and printing or sharing printers and copiers. This will cut down on ‘idling’ time and provide for more cost-effective use
- Report to the Management Office if you see any water leakages
- Remember to turn off the tap after use
- Encourage your cleaner to mop the floors instead of washing with water
- Use recycled water, condensate water or rainwater for non-potable use such as washing and watering of plants
- Minimise the frequency of toilet flushing
- Use low flush for flushing of liquid waste
- Do not allow toilet cisterns to overflow
- Avoid packaging, buy in bulk and choose products with minimal packaging
- Select items that come packaged in recycled or recyclable packaging or containers
- Avoid using disposable utensils
- Use durable cutlery, glass and crockery in the office instead
- Use reusable containers when buying back meals – bring your own containers or your office may provide these containers.
- Recycle glass, plastic, electronic equipment and aluminium cans
- Before purchasing new office furniture, check if your existing office furniture can be refurbished. It is less expensive than purchasing new ones and better for the environment.
- Donate your used office equipment or furniture to your employees, charities or second-hand buyers.
Introduction of the Building
The Jurong Town Hall (JTH) building is a 5-storey erection with one basement floor. It was gazetted as conservation building in 2005 and subsequently announced as national monument in 2015. The redecoration & refurbishment (R & R) works are carried out to restore the key building elements to original conditions as per 1970s whilst adopting sustainable design practices with the aim of achieving the followings:
- Enhance the energy performance of building & M & E system
- Reduce the potable water consumption of the building
- Create a good & healthy indoor environment for occupants.
- Mitigate the negative impact on the natural environment.
Originally, the building is deliberately oriented to minimize the direct exposure to the west & east sun with splayed external wall, creating a shading effect for the external windows and allowing for a cooler interior office. Beyond this, the external windows located in air-conditioning spaces are replaced by doubled glazed glass with low-e coating during R & R works, further improve the façade thermal performance by 40%, which in turn will also benefit the air-conditioning system due to the reducing cooling demand.
Energy efficient centralized water cooled chiller plant are installed to serve the whole building. The system energy performance is optimized through thorough equipment selection & configuration, proper piping layout design and raised chilled water leaving temperature of 8.5 °C. The resultant overall plant efficiency is ≤0.65 kW/RT, well in line with Green Mark benchmark set for the similar type of development.
Energy efficient light fittings like T5 tubes with high frequency ballast are used. Potentially, it will bring in 35% improvement for lighting energy as compared with the baseline value specified in Singapore code SS530:2006. Motion sensors are provided as well to regulate the lights in toilets and staircases and lights will be automatically switched off if it senses no occupants in the space.
Water Efficient Features
The new installed water fittings are recognized and certified by PUB Water Efficient Labelling Scheme (WELS) for their outstanding water efficiency level.
Water sub-meters are installed for the major water usage such as cooling tower, domestic water to allow monitoring and leakage detection. The NEWater are supplied to cooling tower make-up water in order to reduce the potable water usage of the development.
In order to create healthy indoor environment and minimize the negative impact on natural environment, eco-friendly materials recognized by local certification body like Singapore Green Building Council (SGBC) or Singapore Green Label Scheme (SGLS) are extensively used for the architectural elements in the building such as:
- Partition walls
- Low VOCs paints
The landlord formulate the company environmental policy to reflect their sustainability goals set for energy efficiency, water efficiency and waste management. Designated location and recycling facilities are provided to encourage the waste minimization and recycling among occupants, tenants and visitors.
NTU (Novena Campus)
The Lee Kong Chian School of Medicine, NTU (Novena Campus), an institutional development comprising 1 block of 20 storey school of medicine building with 1 basement (the Clinical Sciences Building, CSB) lies within the Novena Health City Masterplan and with close reach of adjacent healthcare facilities. It will in particular be linked to the future Tan Tock Seng Hospital expansion through Sky Bridge and underground links, facilitating students’ integration into clinical settings from an early stage in their course.
The first 8 storeys of the development house teaching facilities including consultation/ discussion rooms, alcove cluster, admin offices, seminar rooms, auditorium, multi-purpose hall and a double volume learning studio. LKC research facilities are located at 10th to 12th and 19thstorey comprising of open bench research labs, lab support rooms, research facilities, and research staff and students’ offices. The top storey is medical library. 13th to 18thstoreys are core and shell spaces and will be fit-out as research facilities in future.
North - South building orientation provides indoor thermal comfort and uniform day-lighting for productive workspace. The service cores are strategically arranged along the eastern and western façade to reduce the amount of solar radiation heating up the internal spaces and also to allow for greater flexibility in laboratory space planning. Building geometry and form designed also provide ideal thermal comfort at outdoor gathering spaces, encouraging a pedagogical outdoor green environment.
The Lee Kong Chian School of Medicine, NTU (Novena Campus)is a government funded project with compulsory Green Mark Platinum requirement. This project is designed with various energy efficient and green features.
Key Sustainable Design Strategies for Energy Efficiency
Thermal comfort with ETTV of 31.85W/m2 is achieved in air-conditioned spaces through careful selection of high performance glass that are pertinent to the function context. Windows are kept to an optimal with position and orientation configured to maximize day lighting while mitigating heat gain.
- Efficient Air-conditioning System
Water-cooled chiller plant system is designed with energy efficient chiller, VSD driven chilled water pumps and cooling tower fans and auto-condenser tube cleaning system. These improve the energy efficiency of the chiller plant system with design system efficiency 0.579kW/RT.
- Heat Recovery System
Round Around Coil (RAC) is provided for all air handling units supplying air to open bench research labs and lab support rooms. The RAC transfers heat from the incoming outside air to water and recycle the heat to a reheat coil after the cooling coil. This saves energy than a conventional system with a reheat coil and associated heat pump.
- Minimizing Use of Single Pass AHUs in Lab
Minimized usage of single pass AHUs in lab is achieved through close collaboration with lab specialist to reduce the energy consumption of lab air distribution system. Recirculating air distribution system is adopted in open bench research labs, while single pass AHUs are only serving 19thstorey research facilities and 10th to 12thlab support rooms.
- Underfloor Air Distribution System
Underfloor air distribution system is provided to the learning studio and auditorium. Compared to a conventional air distribution system, underfloor air distribution system requires less ductwork, provides better comfort level due to less draft, lowers noisy level due to slow outlet velocity and saves energy.
- Artificial Lighting
At B1st to 12th, 19th and 20thstoreys, artificial lighting savings have been achieved at 39.67% improvement over benchmarked lighting power budget indicated in SS 530 by installation of a mix of LED and T5 equipped with high frequency electronic ballast. Motion sensors are also provided to control lighting in toilets.
- Sustainable Products
Sustainable products certified under Singapore Green Labelled Scheme (SGLS) or Singapore Green Building Council (SGBC) are extensively used in the development to provide a healthy learning and working environment for building occupants. These include acoustic ceiling board, internal partition panel board, wall insulation, carpets, internal paints, landscape drainage cell and waterproofing.
Other Green Features
- Use of Water Efficiency Labelling Scheme (WELS) certified water fittings
- Lifts are equipped with regenerative feature, Variable Voltage Variable Frequency (VVVF) motor and sleep mode
- Waste management including provision of recycling facilities
- Installation of siphonic rain water discharge system at roof
- Usage of Green Concrete including recycled concrete aggregates (RCA) and washed copper slag (WCS)
Marina South Mixed Development is primed to be one of the most anticipated projects in town which targets to achieve environmental sustainability through benchmarking with the Platinum rating under Singapore’s Building & Construction Authority (BCA) Green Mark Scheme. With the highest possible rating under the scheme, this mega-project demonstrates exceptional energy and water savings, good indoor environment quality and good practices in environment protection throughout the project life cycle. The project has achieved approximately 20% reduction in cooling load and 35% reduction in energy consumption from the baseline code compliant requirements by making the most of passive design, energy efficient features such as heat recovery, motion sensor, regenerative lifts, and water efficient features such as provision of water sub-meters and rainwater harvesting system to minimize potable water consumption & wastage.
The office towers are orientated with no direct west facing façade. Furthermore, the façade design incorporates horizontal expanded mesh shading elements which helps to reduce the direct solar radiation and corresponding solar heat gain into the building. A combination of extensive shading elements and high performance glazing work hand-in-hand to reduce the solar heat gain into the building by approximate 23% as compared to a code compliant building in Singapore. The façade curtain wall design maintains 3-metre high vision panels for the building occupants to enjoy views of the Singapore’s downtown skyline and the lush greenery within the ‘green heart’ of the development.
Energy Efficient Features
Various energy efficient devices are incorporated into the office buildings design for energy conservation. To reduce the energy used for air-conditioning and cooling within the building, Carbon Dioxide (CO2) sensors and heat recovery systems will be installed for the office towers.
Carbon Dioxide (CO2) sensors will be installed at the return air duct of the air handling units to monitor the indoor carbon dioxide levels. During periods of low occupancy e.g. over the lunch hour, the carbon dioxide sensors will register a reduction in the concentration of carbon dioxide within the office spaces and regulate the amount of outdoor air introduced into the air conditioned space. This will reduce the amount of energy required to cool the hot & humid outdoor air. To further reduce the amount of cooling required to cool the hot & humid outdoor air, heat pipes will be installed for all Pre-cooled Air Handling Units (PAHUs).
Chilled water pumps and air handling units (AHUs) will be installed with Variable Speed Drives (VSD) to regulate the motor speed in accordance with the actual cooling load demand of the building. The reduction in the speed of the motor will have corresponding result in a reduction of the energy consumption of the motors for energy conservation.
Within the basement car park, Carbon Monoxide (CO) sensors will be used to monitor the carbon monoxide level and to control the jet fans operation. When the carbon monoxide levels within the safe & acceptable limits (25ppm), the car park fans may operate at a lower speed.
Within the development, the lighting design will incorporate energy efficient light fittings such as LED & T5 fluorescent lamps to achieve approximate 40% improvement in the overall lighting power budget as compared to the requirements stated within the Singapore Standards SS530 – Code of Practice for Energy efficiency standard for building services & equipment. For additional energy savings, motion sensors will control the lightings within the staircases & toilets.
Water Efficient Features
For water conservation, the development will install water efficient fittings such as Bib taps, sink taps, showers, urinals & basin taps. Only fittings rated as ‘Excellent’ under the Singapore Water Efficiency Labelling Scheme (WELS) or equivalent will be used within the toilets. To further reduce the potable water consumption, newater will be used for toilet flushing in lieu of domestic potable water.
The irrigation system serving the lush landscaped greenery will be served by a rainwater harvesting system. In the event of prolonged dry spells, the irrigation system will be topped up with newater instead of domestic potable water. To further minimize the water consumption for irrigation, an automatic water efficient drip-irrigation system coupled with rain sensors will serve approximately 71% of the landscaped areas. In the event of a rainy day, the rain sensor will re-set the irrigation schedule to conserve water.
To couple with the water conservation efforts mentioned, water sub-meters will be installed to monitor major water usage such as common area bib taps, individual office and retail F&B potable water consumption. These water sub-meters will be also linked to Building Management System (BMS) whereby the water consumption will be monitored by a leak detection program. Leakages may be detected if a sudden prolonged surge in water consumption is observed.
Greenery is a key focus in the development with mid-level sky gardens and the ‘green heart’, which is located in the centre of the development, will promote biodiversity around the city state, in coherence with the master plan of Singapore to build a “City in the Garden”. Trees from the sales gallery also will be transplanted to the “green heart” of the development when the sales gallery is demolished eventually.
The use of green cement and Singapore Green Label Scheme (SGLS) products such as drywall partitions, carpets, road kerbs, precast drains and wheel stoppers will be considered to save virgin materials, reduce landfill waste and decrease the carbon footprint of the development. These green products have a lower impact on the environment due to reduction in energy-intensive extraction and manufacturing of new products. In addition, “Green” refuse chute for recyclables will be provided at individual office towers to promote recycling.
Indoor Environment Quality
For good indoor air quality, the internal painted walls will use paints with low volatile organic compounds (VOC) which emits less pollutants and odour into the indoor environment. To ensure a good indoor air quality, UV emitters and electrical air cleaner will be installed within the AHUs to improve the supply air quality within the internal office spaces.
Within the back-of-house areas, a pneumatic waste collection system served the general waste from the podium levels and the green chute for the office towers.
To complement the green efforts of the developer during the design & construction stages, a building user guide will be provided to the tenants to educate the building occupants of the green initiatives within the development. To promote the use of the green transportation, Marina South will provide a sheltered access to the Marina Bay MRT station via the underground pedestrian network (UPN) located at the basement, electric car charging points and bicycle parking lots coupled with shower facilities.
Located in the heart of Yishun, Northpoint City is an exciting integrated development which will be a new Icon of Yishun, offering Seamless Connectivity and a Desirable Lifestyle Destination to residents in Yishun. Northpoint City, with 3storeys and 2basements will integrate with the existing Northpoint Shopping Centre that will boast a total of over 500 retail shops and F&B outlets, making it the largest mall in the North of Singapore. This mall will be the hub that connects the Yishun Bus Interchange, Yishun MRT Station and will also feature the first Community Club within the mall itself. And of course not forgetting the North Park Residences which is located above this podium. The ‘Green Necklace’ being an extension of the Yishun Town Garden at the south of the development will bring greenery through the perimeter of the building to the 3rd Storey Sky Garden, where a Children Playground and Community Spaces are created, which will finally reach the 4th Storey E-Deck of North Park Residences.
Northpoint City is a BCA Green Mark GoldPlus building and is designed with sustainability in mind.
Key features of the environmental sustainability design
Northpoint City has been designed to reduce East–West Facing façades to reduce solar heat gain.
It is also designed with high performance building envelope design. Low Emissivity double glazed glass are utilized, in order to reduce the heat gain into the building; achieving an overall ETTV of 41.58W/m2.
Lush greenery also helps to reduce the urban heat island effect.
Energy consumption is also reduced by increasing system efficiency through good active design such as careful selection of systems with low energy consumption. All the performance specification of the chilled water system, air distribution system, lighting system etc are studied meticulously to ensure that they are efficient. Considerations of long term operability, replaceability and maintainability of these systems are also considered.
Highly efficient air conditioning systems are installed in this development with an operating efficiency of less than 0.75kW/RT for both water and airside equipment.
Apart from air conditioning system, another major energy-consuming component comes from the lighting usage. All areas are fitted with energy efficient T5 and LED lightings. Occupancy sensors are also installed to control the staircases lighting when it is not in used.
All the Energy performance of all M&E systems is being monitored continuously through the Building Management System. With all the efficient features in place, Northpoint City is able to achieve 4033 tonnes of carbon dioxide emission reduction annually.
In achieving optimal balance between water conservation and water usage, water fittings certified as “Excellent” under the PUB Water Efficiency Labelling Scheme (WELS) are installed.
Automatic water efficient irrigation system with rain sensor is also installed for all planted areas to reduce potable water consumption.
Northpoint City has both good access to Yishun MRT through the B2 underground walkway and Yishun Bus Interchange.
Over 300 bicycle lots are also provided with shower and changing facilities to encourage residents to reduce their reliance on automobiles.
SUSTAINABLE CONSTRUCTION & ENVIRONMENT
The project has an efficient concrete usage of building components, and uses materials such as Green Cements and Recycled Concrete Aggregates for building elements.
The project also uses sustainable architectural products such as dry wall system, drainage cells, concrete panels, cool paints etc.
Recycling bins can be found around the building to encourage waste recycling.
Learning Hub North (The Arc)
To strengthen NTU Green Campus Vision, Learning Hub North (The Arc) shall play an active part to keep the campus green. With more than 50 buildings within NTU campus had achieved Green Mark Platinum rating, every new building in NTU strives for higher standards, push boundaries, and sustainability in construction. With keeping this in mind, Learning Hub North (The Arc) strategies are to create an iconic architecture which is translucent, permeable, and embracing the revitalised landscape setting.
The summaries of green features include:
Double Glazing Curtain Wall System
To ensure that all the tutorial rooms are benefitted from the daylight, they are arrayed at the building perimeter cladded with full height glass enclosure at both external and internal face. To significantly insulate and control the solar radiation, 31.52mm thick double-glazed curtain wall system is used for the external façade. The internal shop front glass facing the air-well is installed using a 17.52mm think laminated low-e glass hence heat load and cooling demand will be reduced. Acoustically, double-glazed system offers an insulating property which can improve the reduction of external sound transmission.
Optimizing Existing Infrastructure with Services Redundancy
As part of NTU campus compound, Learning Hub North (The Arc) creates a cross-campus links to the building surround. This creates flexibility to allow sharing of common infrastructure so as to optimize the use of existing infrastructure and Learning Hub North (The Arc) construction and maintenance time/cost. Existing building with services redundancy are identified and assessed for sharing suitability to share. Chiller water plant from existing Block N4 and existing water tank from Block N3 allow Learning Hub North (The Arc) to achieve the strategy
Here LED lights with high frequency ballasts are provided throughout the building. On top of it, every tutorial room, common corridor, and student hub are equipped with photo censor to detect daylight sufficiency resulting in minimize usage of artificial lighting. Areas with no daylight exposure (e.g. fire staircase, and toilets) are sufficed with motion sensors.
Passive Displacement Ventilation System
The energy efficient air conditioning system – Passive Displacement Ventilation has been implemented intensively in NTU. In Learning Hub North (The Arc), this system is installed at all tutorial rooms whereby all the air shafts are integrated within the partition walls. Since the warm air produced by the learning activities (e.g. CO2, heat from laptop, etc.) is elevated and extracted at high (ceiling) level continuously, this system is expected to improve the indoor air quality. At the same time, the absence of fan in the system contributes to the building energy savings by approximately 7% if compared to the conventional system.
Maximizing Daylight and Natural Ventilation
An 11m wide circular air-well at the heart of the building is formed to maximize daylight and natural ventilation. The daylight analysis simulation study shows that all tutorial rooms have the opportunity to enjoy daylight. To reduce the solar heat gain, double glaze glass along the façade and low-e glass at internal shop front are introduced. The daylight factor for these rooms is ranging from 38.3% to 70.3%.
The common corridor is unenclosed to promote natural ventilation. Chill-out areas as part of the common corridor are inserted in between the perimeter tutorial rooms to increase building permeability and ventilation rates during the North and South wind direction.
Facade Aluminium Screening and Green Wall
External shade to offer protection from both solar radiation and wind driven rain are introduced in form of horizontal aluminium screen at 1stto 2nd storey, and vertical green wall with climbers species at B3 to B2 storey. The shading effect simulation for the horizontal aluminium screen alone shows reduction of 33% solar radiation flux (equivalent to SC 0.67) on average for the whole year. With this feature the building is able to achieve an excellent thermal performance of building envelope to a min. 35.57 W/m2.
Schneider Electric South East Asia is a 9-storey office building located at 50 Kallang Avenue and it is near to the Central Business District. Schneider Electric has made tremendous efforts in making the building green and energy-efficient by incorporating the high-level technology and features to improve user-experience in the building as well as exhibits environmentally sustainable practices.
Schneider Electric incorporates the latest technology in its building operation and facilities, such as magnetic-bearing chillers as well as its in-house analytic system controls to monitor the reliability of sensors installed and building operation data measured. The BMS is open protocol available and allows scheduled export of BMS data based on user preference.
Schneider Electric also incorporates the use of SGBC certified products for its M&E equipment such as cooling towers, VSDs and chillers. Lifts in Schneider Electric have VVVF and regenerative drive.
LED lightings are retrofitted for all common areas in the building such as corridors, toilets and staircases. Staircases are mechanically ventilated, and all toilets are naturally ventilated. Office workspace areas such as meeting rooms and common workspace areas are also installed with occupancy sensors for the lightings.
Recycling programmes are also extensive where specialized waste streams such as E-waste and fluorescent lamps are collected and recycled by contracted waste collection companies. Recycling bins are also available on every floor.
Solar panels are installed at rooftop space and at the green zone at Level 1 for on-site generation of solar power. Off-site renewable energy is also purchased for 45% of total building’s energy consumption. In the green zone, there are priority parking lots for electric vehicles with charging points provided. There are also available parking lots dedicated for electronic mobile devices with provision of charging points. The building uses cross-ventilation design for its 2-storey carpark to eliminate the need for mechanical ventilation in the carpark.
For its employee well-being, the office interior is also decorated with indoor plants to help bring about biophilic benefits upon its users. A rooftop garden is also available for employees to engage in nature within a built environment.
Universal Studios Singapore (USS), is the first large scale international theme park in Singapore as part of the integrated resort development on Sentosa undertaken by Resorts World at Sentosa Pte Ltd (RWS). With a gross floor area of about 57,695 m2, the theme park consists of 7 main attraction zones, housing a wide variety of themed ride, retail and F&B amenities. The development is easily accessible by pubic transports including taxi, internal shuttle bus service and the monorail service (linked to Vivocity – Harbourfront MRT Station).
As part of RWS Corporate Social Responsibility mission, USS based its operation on environmental conservation / protection as one of its key focuses. Attention has been given to the implementation of designs/measures that reduce, recycle or reuse energy/water resources for the park and the development also draws its air-conditioning from a district cooling plant. With this approach, the development was certified BCA GreenmarkGoldPlus award under the new building version back in the year 2010, showcasing their commitment in being a green and energy-efficient development.
Some of the energy efficient / green features that are currently incorporated in the development include the following:
- Low ETTV of the building envelope
- Usage of Energy Efficient Artificial Lightings
- 500 kWp Solar Photovoltaic System
- Excellent rating Water Fittings / Water Efficient Building
- Water Submeters linked to Cloud System for Leak Detection
- Rainwater Harvesting in the form of USS Lagoon
- Water Efficient Irrigation System
- Waste Management System
- Extensive Greenery (inc Green Roofs)
- Pneumatic waste system linking the entire resort
- Recycling of cooking oil
- CSR Initiatives
- Car Park Guidance System
- Condensate Recovery
GREEN FEATURES PART 1: ENERGY EFFICIENCY
Building Envelop Design
The development’s building envelop has an average ETTV value of only 12.88 W/m2, indicating that the heat transmittance into the development is kept at a very low level. Given the nature of the spaces usage, glass windows are only provided where needed and façade walls with low heat transmission properties are used. With these selections, heat transmission through these building envelopes is greatly minimized, lessening the burden on the air-conditioning system.
Energy Efficient Artificial Lighting
As part of a resort-wide initiative, the theme park is currently undergoing a major LED retrofitting exercise where existing halogens and T8 fluorescent lightings are being replaced with LED equivalents, most notably for the halogen track lights in the retail shops and T8 fluorescent at staircases. At the staircases, T8 LED lightings are also equipped with motion sensors, adding a notch to its impressive energy savings. With the current retrofits, the percentage improvement of the lighting consumption is estimated to be about 21.3% better than SS530 baselines and expected to improve further as the LED retrofitting goes full fletch.
Solar Photovoltaic System
Solar photovoltaic panels covering about 4500m2 are provided on the roof of the Revenge of Mummy building in USS. The installed solar PV’s system capacity stands at 500 kWp, making it one of the largest solar PV installations in Singapore.
Based on 2014 data, the solar panels generates 670,931.282 kWh which replaces 2.19% of USS’s current power consumption; which could easily power about 100 HDB flats for a year. Apart from generating renewable energy, these panels assist in reducing heat gain into the building by shading off direct sunlight onto the roof.
PUB Water Efficient Building and Excellent Rating Water Fittings
In their efforts to conserve water, the installed water fittings in the toilets are rated as excellent under Water Efficiency Labelling Scheme (WELS).
USS is also certified by PUB to be a Water-Efficient Building.
Water Submeters (Linked to Online Cloud System)
Water meters have been installed to monitor water consumption breakdown for USS as a whole development, down to the F&B outlets, water rides and toilets areas. For better controls of water usage management and water wastages, the submeters will be linked to an Online Cloud System for both monitoring and leak detection.
An elaborated and extensive rainwater harvesting system is provided to collect rainwater from the resort’s catchment. Harvested rainwater is treated through Dissolved Air Flocculation Filtration (DAFF) system and stored in the USS lagoon. The USS lagoon has a storage capacity of 32,000 m3. Treated rainwater stored in this lagoon is then used for landscape irrigation, water features, operation of water rides/attractions and general floor washing purposes.
Water Efficient Irrigation System
Majority of USS’s landscape areas (>50%) are being irrigated by a water-efficient root watering system and drip water irrigation system (B), in which water is directly fed to the roots. The irrigation systems are regulated by rain sensors (A), such that the system would not operate in the event of wet weather or periods of high rainfall. With such controls, water consumption is greatly reduced till necessary.
In each of the 7 main attraction zones, recycling bins are strategically placed to encourage recycling and waste reduction. In particular plastics are targeted due to the tendency of visitors drinking from plastic bottles. There are also collection points for carton boxes and paper located in the Back of House areas.
A magazine publication “aRWSome” is also available to all staff and tenants, highlighting achieved milestones of waste management and serves as an avenue to inculcate the habit of recycling.
A Green Guide on good practices is also available in the online portal, which is accessible by all staffs. With all these waste minimization efforts, the recyclables collected are quantified and monitored by RWS as evident by its annual Recycling Report, so as to keep track on the effectiveness of the waste management initiative.
The theme park is extensively covered with greenery, from trees lined and placed at strategic locations, to abundance of shrubs areas. The lush greenery achieves a green plot ratio of GnP 3.38, providing a cool, comfortable and aesthetical pleasing environment for the visitors and staffs alike.
Most of the building roofs have also been covered with vegetation. The green roofs account for >25% of the total roof area, which increases the “green coverage” of the theme park while also “softening” the landscape which would otherwise have been “harsher” with concrete and metal roofs
Pneumatic Waste System (Linking Entire Resort)
A pneumatic waste system is available and works by utilizing compressed dry air in a Compressed Air Piping network and load stations connected by a piping network. This minimizes the amount of people needed to operate the rubbish collection network. The system also helps facilitate separation and recycling of waste. By also eliminating foul odour from refuse chutes, this system contributes to a cleaner and fresher surrounding environment of the theme park,
Recycling of Cooking Oil
RWS also puts in the effort to recycle cooking oil from the F&B outlets by engaging a licensed service provider for collection. This cooking oil are transported to a processing plant in which they will be converted to biodiesel, which is a environmental friendly fuel that ultimately contributes to counteracting the increasing levels of carbon dioxide, particulate matters, hydrocarbons etc.
Empowerment, engagement and environmental conservation are the motivation behind RWS’s corporate social responsibility programmes.
2014 have seen the CSR efforts reach out not only locally, but also overseas. Through RWS Care, which comprises of day-out and mentorship programmes, RWS have made a difference to over 9,000 vulnerable children, youths and seniors, by improving lives and bring hope.
Highlights include 1,200 children from 51 primary schools celebrating Children for Children as part of Children’s Day initiatives at RWS; 31 youths also took part in the RWS’s annual aRWSome Apprenticeship programme bringing the total number beneficiaries to 98 youths. Other initiative includes the marine conservation and education, where events such as Coral Research and Ocean Art Charity have been held in collaboration with certain partners.
Carpark Guidance System
The carpark guidance system at East Zone carpark provides handy real-time information to drivers looking for parking lots. This reduces carbon monoxide emissions as vehicles spend lesser time in motion as drivers could narrow down the search area and time.
Condensate recovered from the air-conditioning systems are also sent to the USS lagoon for storage and use for the same applications as stated under rainwater harvesting.