Abstract
The ocean thermal energy is abundant. The global total is about 40 billion kW. The ocean thermal energy conversion (OTEC) is clean and renewable, the power generation is stable, and the energy storage has high capacity. Active exploitation of ocean thermal energy resources is of great significance to realize the strategy of maritime power. In view of the efficiency limit of a traditional OTEC, authors propose an approach of a multi-energy complementary OTEC system that they can improve the efficiency of this system. The approach sets parameters at the system level and integrates solar energy, wind energy, energy storage and OTEC. For example, a 1MW integrated power generation system is designed and simulated by means of computer aided design and of conducting a model-based simulation, respectively. The efficiency of the complementary OTEC system with solar heating can reach 13.12%. In this article, the basic principle and working process of the approach are analyzed, and the system efficiency is calculated. The results show that, in comparison to the traditional OTEC, the complementary system of OTEC can improve the ratio of power generation output efficiency, stability and ocean energy utilization.
Highlights
In the modern times, the world's energy consumption is rapidly increasing, fossil energy is decreasing, environmental pollution and greenhouse effect are becoming more and more serious to affect our daily lives
Setiawan et al, [10] studied the effect of heating warm seawater with plate solar energy in a 33MW ocean thermal energy conversion (OTEC) system by combining solar energy with OTEC, and the results showed that the introduction of solar energy could improve the thermal efficiency of the system, but at the same time brought about a series of system matching problems
In order to fully address above problems, this paper presents a 1MW ocean thermal energy conversion system based on the island conditions in the South China Sea; it studies the integration of clean, efficient and pollution-free solar energy, wind energy and energy storage system into the OTEC system
Summary
The world's energy consumption is rapidly increasing, fossil energy is decreasing, environmental pollution and greenhouse effect are becoming more and more serious to affect our daily lives. In order to improve the efficiency of ocean thermal energy generation system, Hakan Aydin et al, [25] introduced solar complementary heat, significantly increased the gas temperature at turbine inlet, and increased the energy output by 20% ~ 22%. Setiawan et al, [10] studied the effect of heating warm seawater with plate solar energy in a 33MW OTEC system by combining solar energy with OTEC, and the results showed that the introduction of solar energy could improve the thermal efficiency of the system, but at the same time brought about a series of system matching problems. In order to fully address above problems, this paper presents a 1MW ocean thermal energy conversion system based on the island conditions in the South China Sea; it studies the integration of clean, efficient and pollution-free solar energy, wind energy and energy storage system into the OTEC system. As to form an efficient, stable, clean and pollution-free integrated power generation system
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