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.

充分利用海洋热能和海水资源，解决热带沿海地区的能源和淡水供应问题，具有重要的意义和发展潜力。在本文中，一种创新的氨水（NH ₃ -H ₂提出了一种基于O）的联合冷却，海水淡化和动力（CCDP）系统，该系统包括基于卡利纳循环的海洋热能转化（OTEC），喷射器制冷循环（ERC）和喷雾闪蒸（SFE）海水淡化装置。引入了喷射器以将卡利纳循环和ERC耦合，从而在整个涡轮机上产生更大的压力差，从而有利于更高的功率输出。此外，该系统还集成了多级SFE海水淡化系统，以充分利用海水资源并提供淡水输出。建立数学模型以模拟所提出系统的稳定运行，并进行参数分析以确定运行参数（包括蒸汽产生压力和温度）的影响，氨的基本溶液浓度和冷凝压力对系统的热力学和能经济性有影响。结果表明，与基于独立式Kalina循环和基于有机朗肯循环（ORC）的多代系统相比，所提出的CCDP系统在有效效率，火用效率和净功率输出方面更具优势。超过70％的总火用破坏发生在SFE，冷凝器和涡轮机的三个组件中。通过降低冷凝压力并提高碱性氨的浓度，可以有效地提高效率和火用效率，而不受蒸汽产生温度的影响很大。结果表明，与基于独立式Kalina循环和基于有机朗肯循环（ORC）的多代系统相比，所提出的CCDP系统在有效效率，火用效率和净功率输出方面更具优势。超过70％的总火用破坏发生在SFE，冷凝器和涡轮机的三个组件中。通过降低冷凝压力并提高碱性氨的浓度，可以有效地提高效率和火用效率，而不受蒸汽产生温度的影响很大。结果表明，与基于独立式Kalina循环和基于有机朗肯循环（ORC）的多代系统相比，所提出的CCDP系统在有效效率，火用效率和净功率输出方面更具优势。超过70％的总火用破坏发生在SFE，冷凝器和涡轮机的三个组件中。通过降低冷凝压力并提高碱性氨的浓度，可以有效地提高效率和火用效率，而不受蒸汽产生温度的影响很大。冷凝器和涡轮机。通过降低冷凝压力并提高碱性氨的浓度，可以有效地提高效率和火用效率，而不受蒸汽产生温度的影响很大。冷凝器和涡轮机。通过降低冷凝压力并提高碱性氨的浓度，可以有效地提高效率和火用效率，而不受蒸汽产生温度的影响很大。