In highly urbanised environments, excessive noise is one factor that negatively affects liveability. Solutions to mitigate noise propagation include controlling the noise source, providing noise barriers to deflect noise, and active noise cancellation. For noise levels above certain thresholds (e.g. aircraft noise), such solutions may not be effective and a last resort is to enclose living spaces. However, this will reduce natural indoor ventilation and cause heat to build up within the space, requiring conventional means of mechanical ventilation and cooling, such as air-conditioning. Such approaches will increase the energy demand of a building and negatively impact our drive towards environmental sustainability.
A passive method of cooling buildings is through the use of a Solar Chimney, which is a vertical shaft that uses solar energy to generate convection currents and enhance the natural stack ventilation through a building. There have been past studies on Solar Chimneys, mostly done in temperate regions. However, due to differing factors such as the amount of solar irradiance, average temperature, humidity, cloud cover and the sun’s path, it is not accurate to translate the results to Singapore’s context. Moreover, studies conducted in the tropics have largely dealt with solutions for low-rise buildings. Additionally, many current passive ventilation strategies and technologies rely on opening up the façade of a building to channel external airflow through interior spaces. However, other solutions need to be developed to tackle the ventilation of fully enclosed spaces.
The project aims to find innovative solutions to achieve good ventilation, and comfort of the inhabitants, in enclosed spaces in mid to high-rise residential buildings using net zero to minimal energy. One of the main thrusts of the project is to relook at the design of solar chimneys in Singapore’s context and determine effective parameters and design guidelines. This could include a detailed analysis on the air exchange within enclosed living spaces (e.g. optimal air flow for sufficient ventilation in HDB flats).
Details of the CFP are attached herewith. Please download all files and read all instructions and guidelines for the Grant Call by clicking on the <<Proceed to Details>> button below.
All proposals must be submitted to both firstname.lastname@example.org and BCA_COT@bca.gov.sg by 19 Jul 2018, 2359 hrs. Late submissions or submissions from individual applicants without endorsement from the Host Institution will not be entertained.
In case of conflicting information, the Grant Call website shall be taken as most updated source.