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- Journal Article:
Song
The limited petroleum resources available for mankind have led to the exploration and development of oil fields in the offshore deep-sea regions, especially in light of the rising oil prices. Different studies and projects on the ocean thermal energy conversion (OTEC) technology, which operates the power generation facilities using the temperature difference between the deep-sea water and the…
- Conference Paper:
Lewis et al.
A 165 kWe Open-Cycle Ocean Thermal Energy Conversion (OTEC) experiment is planned to be conducted through cost-shared projects between the U.S. Department of Energy and the Pacific International Center for High Technology Research at the Natural Energy Laboratory of Hawaii (NELH), Keahole, North Kona, Hawaii. The objective is to obtain experimental data under prototypical seawater conditions…
- Journal Article:
Geng and Gao
For isolated islands and remote coastal and offshore areas, a multi-generation system based on ocean thermal energy conversion (OTEC) is one promising solution for electricity and water supply since it can exploit seawater resource and ocean thermal energy (OTE) simultaneously. In order to further improve the energy utilization efficiency, this paper proposes a novel combined…
- Journal Article:
Hron et al.
Since 1985 Alcan has been operating equipment at a test site at the National Energy Laboratory of Hawaii at Keahole Point near Kona in Hawaii. Segments of aluminum heat exchangers are exposed to surface sea water at 27{degrees} C and to water from 2000 ft down coming in at 7{degrees} C. Progress was such that in 1988 Alcan contracted GEC to design a 250 kW pilot facility. The cold deep water,…
- Journal Article:
Ma et al.
The present paper deals with the performance analysis of an ocean thermal energy conversion (OTEC) plant based on the organic Rankine cycle (ORC) with a theoretical outpower of 100 kW where a non-azeotropic mixture has been used as the working fluid. Hydrofluoroolefins (HFOs) are selected as the components of the binary non-azeotropic working fluid due to their desired…
- Journal Article:
Ahmadi et al.
Energy and exergy analyses are reported of hydrogen production via an ocean thermal energy conversion (OTEC) system coupled with a solar-enhanced proton exchange membrane (PEM) electrolyzer. This system is composed of a turbine, an evaporator, a condenser, a pump, a solar collector and a PEM electrolyzer. Electricity is generated in the turbine, which is used by the PEM electrolyzer to produce…
- Journal Article:
Jin et al.
Ocean thermal energy refers to the thermal potential energy produced by the temperature difference between the warm surface seawater and the cold deep seawater. In this paper, a siphon flash evaporation desalination system using ocean thermal energy is proposed. Because it can utilize the ocean thermal energy directly for desalination, siphon flash evaporation desalination system has…
- Report:
Takazawa et al.
In Open-cycle Ocean Thermal Energy Conversion (OC-OTEC) system, the net output power is the difference between the gross power output and the internal power consumption of the system. The main internal power consuming devices of the OC-OTEC system are the intake pumps for the cold deep sea water and the warm surface sea water, and the vacuum pumps or compressor for exhausting non condensable…
- Conference Paper:
Patnaik et al.
Necessities like water, electricity and a clean environment are essential for the sustainable development of society. The demand for electricity and fresh water is increasing day by day, especially in small islands. Hence desalination of seawater and alternative new renewable energy becomes essential to cope with the demand in islands. To mitigate these issues, the low temperature thermal…
- Journal Article:
Kim et al.
Multiple condensers are used for dual-use open cycle ocean thermal energy conversion to generate both electric power and desalinated water with preset ratios. Fundamentals of heat and mass transfer phenomena are scrutinized to identify optimal operational conditions of various OC-OTEC plant scales. Important control parameters include warm water temperature and its intake rate, vacuum pressure…
- Journal Article:
Liu
Ocean thermal energy conversion (OTEC) is an energy generation technology that uses cold deep ocean water (DOW) and warm surface water to produce electricity. Active development of OTEC was started in the 1970s with Hawaii as a major research and development center. In the following several decades, small pilot-scale closed-cycle and open-cycle OTEC plants were successfully designed,…
- Journal Article:
Masutani and Takahashi
The concept of ocean-thermal energy conversion (OTEC) takes advantage of the naturally occurring temperature difference between the surface and deeper waters of the open tropical ocean. This article discusses the basis for OTEC, closed and open cycles for energy generation, and the possibility of freshwater generation as a by-product of a hybrid of the closed and open cycles.
- Event: …
International Conference on Progressive Research in Industrial & Mechanical Engineering (PRIME 2021)
- Journal Article:
Yasunaga et al.
Ocean thermal energy conversion (OTEC) is a system to convert the ocean thermal energy, which is stored as the vertical temperature gradient in the ocean, into the electricity and the heat exchanger performance is significantly important. Theoretical maximum power output and the relationship between heat exchanger performances have been formulated in finite-time thermodynamics. And considering…
- Journal Article:
Arima
The OTEC is generating electricity by using temperature difference between surface and deep seawater which least max temperature difference is 25 degree Celsius. Then, the OTEC has limited thermal efficiency due to ocean thermal environment. In order to improve the thermal efficiency of OTEC, the increasing of the seawater temperature is required. Off course, the changing of seawater…
- Journal Article:
McGowan and Heronemus
This paper summarizes the general concepts and current state-of-the-art for Ocean Thermal Energy Conversion (OTEC) Systems, a large-scale solar energy driven resource. Specifically, it focuses on the varied material needs for such power plants. Each of the system’s major components (turbine, heat exchanger, ocean platform or hull, and ocean water delivery system) is discussed with respect to…
- Journal Article:
Etemadi et al.
With considering the increasing of global temperature, and also the concern of global climate change, many policy makers worldwide have been accepted the importance of reducing greenhouse gas emissions, in particular from the power industries. Energy resource use is one of the most important and contentious issues of our time. The ocean provides a vast source of potential energy resources. Of…
- Journal Article:
Herrera et al.
This paper presents the economic feasibility analysis of a 2 MW Ocean Thermal Energy Conversion (OTEC) power plant in the open cycle. The plant can supply 6.35% of the average annual consumption of the electricity demand located at San Andrés Island (Colombia). On the one hand, the work presents the selection of the place to locate an offshore facility considering the technical viability while…
- Journal Article:
Hernández-Romero et al.
Developing technologies that can supply water and energy in a sustainable manner is essential in addressing resource scarcity of small communities. The main motivation of this article is to find, through the analysis of different study cases, the optimal design of an Open-Cycle, Ocean Thermal Energy Conversion (OC-OTEC) system. Specifically, we propose optimization formulations to determine…
- Journal Article:
Adiputra and Utsunomiya
Cold-water pipe (CWP) is a novel, most-challenging component of Ocean Thermal Energy Conversion (OTEC) floating structure which is installed to transport the deep seawater to the board. For commercial scale, the transported seawater flow rate will be in the order of 102 m3/s. This large amount of internal flow may trigger instability which leads to the failure of CWP.…
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