Beyond electricity: The potential of ocean thermal energy and ocean technology ecoparks in small tropical islands

Osorio, Andrés F.; Arias-Gaviria, Jessica; Devis-Morales, Andrea; Acevedo, Diego; Velásquez, Héctor; Arango-Aramburo, Santiago

doi:10.1016/j.enpol.2016.05.008

Cited by 42 publications

(29 citation statements)

References 35 publications

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“…But from now, the development of OTEC plant construction that more stable built at the onshore platform. The onshore type requires long intake pipes for pumping ocean water to the mainland with high initial construction costs and large amounts of energy to operate the pumps could be limited by the availability of the thermal resource near the coast and could enhance environmental impacts [6], [18].…”

Section: A Otec In Riau Islandsmentioning

confidence: 99%

“…Small islands in the tropics region have a significant advantage from the establishment from OTEC technology by providing a starting point of their large ocean thermal potential. Furthermore, OTEC could supply other basic needs to small Island in tropic regions [6]. In some locations at small islands in the tropics, have higher ocean thermal range.…”

Section: B Consideration Of Otec Applicationmentioning

confidence: 99%

“…There has been an increasing focus on global warming in recent decades: in particular, on the emissions of CO2 and other greenhouse gases, and in general on the impact that human activity has on the climate and the problems this might create [6] and many countries have pledged their commitment to reduce greenhouse gas emissions [5]. The world has realized CO2 and Greenhouse Emissions are the main factors of the contributing impact of climate change [7].…”

Section: Introductionmentioning

confidence: 99%

“…Ocean Thermal Energy Conversion (OTEC) is a technology to generate electricity using as a heat source the thermal energy stored in the sea [17] where this technology converts the difference in temperature between the surface and deep layers of the ocean into electrical power [11]. the main principle of OTEC the electricity generates indirectly from solar energy by harnessing the temperature difference [15] between the warm top layer and the cold deep seawater of the ocean [14] with 1000 m depth [6], [9], [18] through a thermodynamic heat engine cycle convert heat energy into electricity. the hear engine from OTEC plant designed to take advantage of the thermal gradient of the ocean to produce energy [19].…”

Section: Introductionmentioning

confidence: 99%

“…OTEC is becoming an increasingly attractive option to supply additional energy for many tropical countries and islands [6], [14], [18]. Tropical countries are very suitable to apply OTEC, the ocean surface temperature gradients exist primarily and consistent in tropical regions because of influence from near the equator [14].…”

Section: Introductionmentioning

confidence: 99%

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OTEC Potential Studies For Energy Sustainability In Riau Islands

Bachtiar¹,

Putra²

2019

EECSI

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Interest in the use of alternative renewable energy resources has been developed recently due to increased energy consumption and depletion of fossil fuel reserves. A major concern the world to reduce is dependence impact from fossil fuel consumption with renewable energy. Renewable energy sources have enormous economic, environmental benefits and provide energy security. The most potential renewable energy sources of ocean energy include Ocean Thermal Energy Conversion (OTEC). OTEC is a technology to generate electricity using a heat source thermal energy stored in the sea and is becoming increasingly attractive option to supply additional energy for many tropical countries and islands such as Riau Islands. Two monitoring stations were collected in Bintan Island using CTD. CTD profiler allows to the determination of derived and relevant quantities in situ measurement ocean temperature per depth. The relationship between ocean temperature and ocean depth represented with Regression Model Fit Analysis (RMFA). RMFA models to estimates ocean temperature profiles from CTD measurements. To predict ocean depths up to 2000 meters using Equation of State Model (EoSM) of ocean water. The OTEC efficiency value can be calculated using the equation of Carnot efficiency (η). Carnot efficiency maximum in Riau Island is η <0.7.

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Section: A Otec In Riau Islandsmentioning

confidence: 99%

Section: B Consideration Of Otec Applicationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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OTEC Potential Studies For Energy Sustainability In Riau Islands

Bachtiar¹,

Putra²

2019

EECSI

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Perspective in resource recovery from reverse osmosis brines: the case for sustainable seawater refineries for small islands

Acevedo,

Mijts,

John

et al. 2023

J of Chemical Tech & Biotech

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Reverse osmosis has become the dominant technique for desalination while at the same time there is a steady increase in reliance on desalination systems for water production globally. Resource recovery and mitigation of adverse effects from brine discharge are important factors and are increasingly being considered by researchers and industrial actors. The island nation of Aruba, with over 100 years of commercial desalination history, is used as a case study to illustrate the possibilities of shifting from centralized seawater desalination plants to seawater refineries in which freshwater is considered only one of the possible products. We identify possible economic value from desalination plants of medium scale (as is the case in Aruba) from the production of magnesium, caustic soda, chlorine‐based products and rubidium and possible energy recovery possibilities through osmotic gradients and/or hydrogen storage while at the same time highlighting the insufficient potential for lithium harvesting from seawater desalination brines. We have found that the economic value from resources recovered from brine may be even larger than the value of the freshwater produced by these plants. Furthermore, reduction of salinity and quantity of brine can reduce the overall ecological impact from current brine effluents. © 2023 Society of Chemical Industry (SCI).

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