Please use this identifier to cite or link to this item: https://scholarbank.nus.edu.sg/handle/10635/221488
Title: FEASIBILITY STUDY ON INTEGRATION OF SOLAR PHOTOVOLTAIC AND GREEN ROOF IN HOUSING AND DEVELOPMENT BOARD (HDB) RESIDENTIAL ESTATES IN SINGAPORE - USING A CASE-STUDY APPROACH
Authors: OH MEI JING
Keywords: Building
Project and Facilities Management
Wong Nyuk Hien
2011/2012 PFM
Solar photovoltaic
Issue Date: 18-Jun-2012
Citation: OH MEI JING (2012-06-18). FEASIBILITY STUDY ON INTEGRATION OF SOLAR PHOTOVOLTAIC AND GREEN ROOF IN HOUSING AND DEVELOPMENT BOARD (HDB) RESIDENTIAL ESTATES IN SINGAPORE - USING A CASE-STUDY APPROACH. ScholarBank@NUS Repository.
Abstract: Solar Photovoltaic (PV) and green-roofs are on a rising trend with Singapore’s focus on sustainable development and architecture. With the Housing and Development Board (HDB) residential buildings constituting majority of high-rise buildings in Singapore, HDB has been implementing PV and green-roofs in its public housing estates. However, limited roof space tend to result in roof space competition and trade-offs between PV and skyrise greenery on roof. Furthermore, Singapore’s hot tropical climate poses problems of rising PV temperature that reduces PV conversion efficiency whilst also creating a harsh growing environment for vegetation on green-roofs. Experiments conducted overseas on Greenroof-PV integration have illustrated positive interaction yielding complementary benefits that can improve performance of PV and green roof. To mitigate the aforementioned challenges and to ensure long-term optimal performance of the two systems in Singapore, Greenroof-PV integration can be a solution. Hence, this dissertation studies the feasibility of Greenroof-PV integration in HDB residential estate. Upon exploring the potential challenges faced by the integration, this dissertation also proposed conceptual designs on the integrated system. Considering the integration has not yet implemented in the tropics, three individual sustainable technology projects (i.e. PV and green-roof) implemented in HDB residential estates in Singapore were studied using the case-study approach, interviews and thermal measurements for a more comprehensive study. Quantitative study has shown correlation between solar irradiance and PV temperature and PV efficiency decreases as PV temperature increases above 25oC. Thermal measurements have shown highest surface temperature recorded on concrete roof, followed by unshaded and shaded extensive green-roofs, and intensive green-roofs, thus illustrating cooling effect of rooftop greenery towards the integration. Qualitative study has shown the most favorable installation site to be new HDB residential and multi-storey-carpark rooftops. This dissertation has shown that the integration of PV with extensive green-roofs will be a more feasible option than PV-shelters in roof garden for HDB residential estates since the complementary benefits illustrated and prefabrication of the integrated system promote the former. Therefore, Greenroof-PV integration can be a solution that brings improvements and innovations to sustainable architecture in Singapore.
URI: https://scholarbank.nus.edu.sg/handle/10635/221488
Appears in Collections:Bachelor's Theses

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