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Reliability assessment of the ocean thermal energy conversion systems through Monte Carlo simulation considering outside temperature variation
Journal of Marine Science and Technology ( IF 2.6 ) Pub Date : 2023-11-06 , DOI: 10.1007/s00773-023-00967-0
Amir Ghaedi , Reza Sedaghati , Mehrdad Mahmoudian , Eduardo M. G. Rodrigues , Radu Godina

The ocean thermal energy conversion (OTEC) systems, as renewable energy-based power plants, have the potential to play a significant role in meeting future electricity demands due to the vast expanse of the world's oceans. These systems employ the temperature difference between surface ocean waters and deep ocean waters to drive a thermodynamic cycle and produce electricity. The temperature of deep ocean waters, approximately 1000 m below the surface, is approximately 4 °C, while surface ocean temperatures typically range between 20 and 30 °C. The generated power of OTEC systems is dependent on these temperature differences and may vary with changes in surface ocean temperatures. In this study, the main focus is to find the impact of temperature variation on the failure rates of OTEC system components and the generated power output of these plants. The findings indicate that as the demand for the power system increases, its reliability decreases. In order to improve the reliability of the power system, the integration of a new generation unit, such as the close cycle OTEC power plant under investigation, could be necessary. The findings also indicate the importance of considering temperature variation in the evaluation of the reliability of such types of power plants based on renewable energy.



中文翻译:

考虑外部温度变化的蒙特卡罗模拟海洋热能转换系统的可靠性评估

由于世界海洋广阔,海洋热能转换(OTEC)系统作为可再生能源发电厂,有可能在满足未来电力需求方面发挥重要作用。这些系统利用表层海水和深层海水之间的温差来驱动热力循环并发电。地表以下约 1000 m 的深层海水温度约为 4 °C,而表层海洋温度通常在 20 至 30 °C 之间。OTEC 系统的发电量取决于这些温差,并且可能会随着海洋表面温度的变化而变化。在这项研究中,主要重点是找出温度变化对 OTEC 系统组件故障率和这些工厂发电输出的影响。研究结果表明,随着电力系统需求的增加,其可靠性会下降。为了提高电力系统的可靠性,可能需要集成新的发电机组,例如正在研究的闭循环 OTEC 发电厂。研究结果还表明,在评估此类基于可再生能源的发电厂的可靠性时考虑温度变化的重要性。

更新日期:2023-11-06
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