Revisiting ocean thermal energy conversion

Fujita, Rod; Markham, Alexander C.; Díaz, Julio Ernesto Díaz; García, José Antonio Rubio; Scarborough, Courtney; Greenfield, Patrick; Black, Peter; Aguilera, Stacy E.

doi:10.1016/j.marpol.2011.05.008

Cited by 34 publications

(19 citation statements)

References 16 publications

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“…The plant produced 120 kW gross power (30 kW net) and powered a school and other buildings on Nauru for a few months before being decommissioned [9]. Since then, work has continued in many countries testing heat exchanger and working fluids [10,11]. In 1993, a land-based open cycle plant was designed and installed at NELHA.…”

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confidence: 99%

An assessment of Florida's ocean thermal energy conversion (OTEC) resource

VanZwieten

Rauchenstein

Lee

2017

Renewable and Sustainable Energy Reviews

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Technological advances in marine renewable energy allow for various methods of extracting energy in the form of electrical power from the ocean. One method is through the process of ocean thermal energy conversion (OTEC). This study assesses the distributions of electrical power that can be extracted from the ocean around the state of Florida. The OTEC resource is analyzed with the combination of a state-of-the-art ocean circulation model, the Hybrid Coordinate Ocean Model, along with a state-of-the-industry OTEC plant model in order to predict the attainable power values offshore Florida. The power predictions are then constrained by local cold deep sea water replenishment to provide an upper limit to the sustainable OTEC resource. The thermal resource is used as input to the plant model to predict the potential power production. The resource data is then validated through the comparison against in situ oceanic measurements to safeguard the quality of the predicted power values.

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mentioning

confidence: 99%

An assessment of Florida's ocean thermal energy conversion (OTEC) resource

VanZwieten

Rauchenstein

Lee

2017

Renewable and Sustainable Energy Reviews

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“…On the other hand, the potential for some of these technologies to produce power at relatively small scales for isolated communities and to generate important ancillary benefits such as fresh water, food, and refrigeration/air conditioning (Fujita et al, 2011) without additional energy or nutrient inputs creates opportunities for ecomarkets. Communities holding access, exclusion, and management privileges over areas rich in ocean energy potential could auction exploration and development rights and insist on both performance bonds to incentivize good environmental performance and on royalties or other forms of ongoing compensation.…”

Section: (H) Ocean Energy Concessionsmentioning

confidence: 99%

Ecomarkets for conservation and sustainable development in the coastal zone

et al. 2012

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Because conventional markets value only certain goods or services in the ocean (e.g. fish), other services provided by coastal and marine ecosystems that are not priced, paid for, or stewarded tend to become degraded. In fact, the very capacity of an ecosystem to produce a valued good or service is often reduced because conventional markets value only certain goods and services, rather than the productive capacity. Coastal socio-ecosystems are particularly susceptible to these market failures due to the lack of clear property rights, strong dependence on resource extraction, and other factors. Conservation strategies aimed at protecting unvalued coastal ecosystem services through regulation or spatial management (e.g. Marine Protected Areas) can be effective but often result in lost revenue and adverse social impacts, which, in turn, create conflict and opposition. Here, we describe 'ecomarkets' - markets and financial tools - that could, under the right conditions, generate value for broad portfolios of coastal ecosystem services while maintaining ecosystem structure and function by addressing the unique problems of the coastal zone, including the lack of clear management and exclusion rights. Just as coastal tenure and catch-share systems generate meaningful conservation and economic outcomes, it is possible to imagine other market mechanisms that do the same with respect to a variety of other coastal ecosystem goods and services. Rather than solely relying on extracting goods, these approaches could allow communities to diversify ecosystem uses and focus on long-term stewardship and conservation, while meeting development, food security, and human welfare goals. The creation of ecomarkets will be difficult in many cases, because rights and responsibilities must be devolved, new social contracts will be required, accountability systems must be created and enforced, and long-term patterns of behaviour must change. We argue that efforts to overcome these obstacles are justified, because these deep changes will strongly complement policies and tools such as Marine Protected Areas, coastal spatial management, and regulation, thereby helping to bring coastal conservation to scale.

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“…Renewable energy includes energy sources derived from natural processes that can be replicated and supply not affected by consumption levels [1], [9], [10]. The search for carbon-free renewable energy sources has increased in recent years [11]. Renewable energy sources have enormous economic and environmental benefits and provide energy security for countries around the world.…”

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.…”

Section: Introductionmentioning

confidence: 99%

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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Revisiting ocean thermal energy conversion

Cited by 34 publications

References 16 publications

An assessment of Florida's ocean thermal energy conversion (OTEC) resource

An assessment of Florida's ocean thermal energy conversion (OTEC) resource

Ecomarkets for conservation and sustainable development in the coastal zone

OTEC Potential Studies For Energy Sustainability In Riau Islands

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