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首页> 外文期刊>Energy Conversion & Management >Evaluation of a novel ammonia-water based combined cooling, desalination and power system based on thermodynamic and exergoeconomic analyses
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Evaluation of a novel ammonia-water based combined cooling, desalination and power system based on thermodynamic and exergoeconomic analyses

机译：基于热力学和exergo经济分析的新型氨基水合冷却，脱盐和动力系统的评价

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摘要

It is of great significance and development potential to make full use of ocean thermal energy and seawater resources to solve the problem of energy and fresh water supply in tropical coastal areas. In the present article, an innovative ammonia-water (NH3-H2O) based combined cooling, desalination and power (CCDP) system is proposed, consisting of Kalina cycle-based ocean thermal energy conversion (OTEC), ejector refrigeration cycle (ERC) and spray flash evaporation (SFE) desalination unit. An ejector is introduced for coupling the Kalina cycle and ERC, which creates a larger pressure difference across the turbine in favor of higher power output. Besides, a multi-stage SFE desalination system is integrated into the proposed system for making full use of seawater resources and providing fresh water output. Mathematical model is established for simulating steady operation of the proposed system, and parametric analysis is performed to determine the influences of operational parameters including vapor generation pressure and temperature, ammonia concentration of basic solution and condensation pressure on the system thermodynamic and exergoeconomic performances. Results show that by comparison with the stand-alone Kalina cycle and the organic Rankine cycle (ORC) based multi-generation system, the proposed CCDP system is more advantageous with regard to the effective efficiency, exergy efficiency and net power output. Over 70% of the total exergy destruction occurs in the three components of SFE, condenser and turbine. The improvement of both effective efficiency and exergy efficiency can be accomplished by reducing the condensation pressure and raising the basic ammonia concentration, while not greatly affected by vapor generation temperature.
机译：充分利用海洋热能和海水资源来解决热带沿海地区的能源和淡水问题是具有重要意义和发展潜力。在本文中，提出了一种基于创新的氨水（NH3-H2O）的组合冷却，脱盐和功率（CCDP）系统，包括基于Kalina循环的海洋热能转换（OTEC），喷射器制冷循环（ERC）和喷雾闪光蒸发（SFE）海水淡化单位。引入用于耦合Kalina循环和ERC的喷射器，其在涡轮机上产生更大的压力差，这些涡轮机以更高的功率输出。此外，多级SFE海水淡化系统集成到所提出的系统中，以充分利用海水资源并提供淡水产量。建立了模拟所提出的系统的稳步运行的数学模型，并进行参数分析以确定操作参数的影响，包括蒸气产生压力和温度，碱性溶液的氨浓度和系统热力学和曝光经济性能的凝结压力。结果表明，与基于独立的Kalina循环和有机朗肯循环（ORC）的多代系统相比，所提出的CCDP系统在有效效率，高效率和净功率输出方面更有利。在SFE，冷凝器和涡轮机的三个部件中出现超过70％的总出现的破坏。通过降低冷凝压力并提高碱性氨浓度，可以实现有效效率和漏洞效率的提高，同时不会受到蒸气产生温度的大大影响。

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  • 来源
    《Energy Conversion & Management》 |2021年第7期|114176.1-114176.19|共19页
  • 作者

    Zhou Shihe; Liu Xinyu; Zhang Kechong; Yue Qianjin; Bian Yongning; Shen Shengqiang;

  • 作者单位

    Dalian Univ Technol Sch Ocean Sci & Technol Panjin 124221 Liaoning Peoples R China|Dalian Univ Technol Key Lab Liaoning Prov Desalinat Dalian 116024 Liaoning Peoples R China;

    Dalian Univ Technol Sch Ocean Sci & Technol Panjin 124221 Liaoning Peoples R China;

    Dalian Univ Technol Sch Ocean Sci & Technol Panjin 124221 Liaoning Peoples R China;

    Dalian Univ Technol Sch Ocean Sci & Technol Panjin 124221 Liaoning Peoples R China;

    Dalian Univ Technol Sch Ocean Sci & Technol Panjin 124221 Liaoning Peoples R China;

    Dalian Univ Technol Sch Energy & Power Engn Dalian 116024 Liaoning Peoples R China|Dalian Univ Technol Key Lab Liaoning Prov Desalinat Dalian 116024 Liaoning Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Ocean thermal energy; Multi-generation; Kalina cycle; Spray flash evaporation; Ejector refrigeration; Exergoeconomic;

    机译：海洋热能;多代;Kalina循环;喷雾闪蒸;喷射器制冷;exergo经济;

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