Please use this identifier to cite or link to this item: https://doi.org/10.1080/19373260.2011.598261
Title: Engineered geothermal power systems for Singapore
Authors: GRAHAME JOHN HENDERSON OLIVER 
Palmer, A.C. 
Tjiawi, H.
Zulkefli, F.
Keywords: engineered
geothermal
power
Singapore
Issue Date: Nov-2011
Citation: GRAHAME JOHN HENDERSON OLIVER, Palmer, A.C., Tjiawi, H., Zulkefli, F. (2011-11). Engineered geothermal power systems for Singapore. IES Journal Part A: Civil and Structural Engineering 4 (4) : 245-253. ScholarBank@NUS Repository. https://doi.org/10.1080/19373260.2011.598261
Abstract: Singapore has a high geothermal gradient (~35°C/km) as evidenced by hot springs (70°C) and high heat flow (estimated to be about 130 mW/m 2). In this study, ground water models are presented based on AUTOUGH-2 computer modelling. The models show a freshwater lens up to 4.8 km depth under Singapore's land area, whose temperature increases with depth up to 192°C. Three geothermal prospects are identified: an engineered geothermal system (EGS) in hot, wet granite on the main island; an EGS in hot, wet volcanics or granite on Pulau Tekong and hot sedimentary aquifers (HSAs) in the Jurong Formation, both on and off-shore. Geothermal water at 150°C could be used for electricity generation, industrial process heating and desalination. A cost estimate exercise for a district cooling system (DCS) powered by 90°C geothermal water shows that there are significant economic advantages. A feasibility study is required. © 2011 Copyright Taylor and Francis Group, LLC.
Source Title: IES Journal Part A: Civil and Structural Engineering
URI: http://scholarbank.nus.edu.sg/handle/10635/90956
ISSN: 19373260
DOI: 10.1080/19373260.2011.598261
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