Projected Costs for Electricity and Products from OTEC Facilities and Plantships

Dugger, Gordon L.; Henderson, Ronald W.; Francis, E. J.; Avery, W. H.

doi:10.2514/3.62534

“…As explained previously, the net power generated depends strongly on the available seawater temperature difference between surface and bottom layers. However, the temperature difference is dictated primarily by the warm surface temperature since water temperature near 1000 m depth varies little with longitude or season and varies only 1 • C or 2 • C with the latitude in the ± 20 • latitude band of interest [34]. Consequently, the spatial and temporal distributions of ocean thermal energy conversion resources around Mauritius can be explained on the basis of spatial and temporal variations in sea surface temperature.…”

Section: Otec Resource Potentialmentioning

confidence: 99%

Effect of domestic water use on air pollutant emissions in Abu Dhabi, United Arab Emirates

DeFelice¹,

Gibson²

2013

Int J Energy Environ Eng

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The geographical location of Mauritius near the warm tropical waters of the Indian Ocean coupled to the vast exclusive economic zone approximating 2.3 million square kilometers, encourage the promotion of ocean thermal energy conversion (OTEC) systems. Technological advancements have enabled offshore structures to pump the cold water lying at 1000 m depth in the seawater column to the surface, and through the temperature difference set up with the warm surface layer, drives a turbine and generates electricity. In this study, a model has been developed to compute the temperature difference between the deep (1000 m) and surface (20 m) seawater layers around Mauritius. An algorithm has been implemented to determine the net power generated from a proposed OTEC power plant, acquired through the processing of sea surface temperature satellite images, at a resolution of 1 km. The spatial and temporal variations of the net power generated has been observed by splitting the annual data into four monsoonal time frames. Results show that the south-western region of Mauritius possesses high OTEC resources, with annual mean daily net power generation capacity of about 95 MW, representing about 20% of the peak power demand of the island. Moreover, the bathymetry of the southern region is propitious due to deep cold water availability at a proximity of less than 5km from the coastline. The energy and exergy efficiencies of the OTEC system are found to be 1.9 and 22.8%, respectively. A cost-benefit analysis indicates that profits of the order of 4.5 times the initial investment can be generated.

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A novel modelling approach to the identification of optimum sites for the placement of ocean thermal energy conversion (OTEC) power plant: application to the tropical island climate of Mauritius

Doorga¹,

Gooroochurn²,

Motah³

et al. 2018

Int J Energy Environ Eng

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The geographical location of Mauritius near the warm tropical waters of the Indian Ocean coupled to the vast exclusive economic zone approximating 2.3 million square kilometers, encourage the promotion of ocean thermal energy conversion (OTEC) systems. Technological advancements have enabled offshore structures to pump the cold water lying at 1000 m depth in the seawater column to the surface, and through the temperature difference set up with the warm surface layer, drives a turbine and generates electricity. In this study, a model has been developed to compute the temperature difference between the deep (1000 m) and surface (20 m) seawater layers around Mauritius. An algorithm has been implemented to determine the net power generated from a proposed OTEC power plant, acquired through the processing of sea surface temperature satellite images, at a resolution of 1 km. The spatial and temporal variations of the net power generated has been observed by splitting the annual data into four monsoonal time frames. Results show that the south-western region of Mauritius possesses high OTEC resources, with annual mean daily net power generation capacity of about 95 MW, representing about 20% of the peak power demand of the island. Moreover, the bathymetry of the southern region is propitious due to deep cold water availability at a proximity of less than 5km from the coastline. The energy and exergy efficiencies of the OTEC system are found to be 1.9 and 22.8%, respectively. A cost-benefit analysis indicates that profits of the order of 4.5 times the initial investment can be generated.

show abstract

Thermodynamic performance assessment of an ammonia–water Rankine cycle for power and heat production

Wagar

¹

,

Zamfirescu

²

,

Dinçer

³

2010

Energy Conversion and Management

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Projected Costs for Electricity and Products from OTEC Facilities and Plantships

Cited by 9 publications

References 2 publications

Effect of domestic water use on air pollutant emissions in Abu Dhabi, United Arab Emirates

Effect of domestic water use on air pollutant emissions in Abu Dhabi, United Arab Emirates

A novel modelling approach to the identification of optimum sites for the placement of ocean thermal energy conversion (OTEC) power plant: application to the tropical island climate of Mauritius

Thermodynamic performance assessment of an ammonia–water Rankine cycle for power and heat production

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