SMU CONNEXION
SMU Connexion (SMUC), an extension of the Singapore Management University (SMU), is the first net-zero energy building in the city that also
showcases mass engineered timber (MET) technology. It is designed to meet the Building and Construction Authority (BCA) Green Mark Platinum certification and the international WELL Building Standard. It has been in operation since January 2020.
ENERGY SAVINGS To achieve net-zero energy, SMUC encompasses all aspects of environmental design: from passive and active measures, site management, material selection, innovative features to occupant health and comfort.
In terms of passive design, the façade of SMUC comprises high- performance double-glazed and thermally insulated external walls. The building has an elongated south façade and a 37-per-cent window-to-wall ratio to minimise solar heat gain from the east and west. Study areas have sufficient daylight and glare is mitigated with external shading devices.
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Smart systems are integrated with sensors to control thermal comfort parameters and lighting, as well as to monitor the energy consumption of the building. In comparison with Green Mark baseline requirements, the building has achieved the following:
• A 50 per cent improvement with an Envelope Thermal Transfer Value (ETTV) of 26 W/m2
.
• A 91 per cent reduction of the air distribution energy with the Enhanced Passive Displacement Cooling (EPDC) system.
• A 69.1 per cent reduction in lighting energy consumption with the use of energy-efficient lighting selection, zoning, sensors and smart control system.
• Energy savings of 47 per cent with an energy use intensity (EUI) of 58.5 kWh/m2
/year. 6
• Up to 30 per cent of water savings with water-efficient sanitary fittings. • The building is also served by a chiller plant that is 21 per cent more energy efficient.
• Energy cost savings of USD14,800 per year.
Solar photovoltaics supply 100 per cent (632.5 MWh/year) of the building’s energy consumption. With a small building footprint and limited roof space, the roof canopy over Stamdord Canal has been strategically extended to provide additional roof space to mount sufficient solar panels to meet the required solar energy.
TECHNOLOGY INTEGRATION
The SMUC building has effective passive design features to reduce solar heat gain: naturally ventilated corridors, as well as energy-efficient lighting, air-conditioning and equipment. The challenge is to maintain net positive with some energy buffer, with a functional requirement of a 24-hour
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1 to 4 Smart systems control thermal comfort parameters and lighting, as well monitor the energy consumption of the building 5 to 7 The façade comprises double-glazed and thermally insulated external walls. A 37-per-cent window-to-wall ratio offers sufficient daylight while mitigating glare
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