海洋温差能发电循环系统热力学分析

Thermodynamic Analysis on Ocean Thermal Energy Conversion System

对海洋温差发电朗肯循环系统进行分析,分别研究蒸发压力、氨水浓度、冷热海水温度等参数对系统热效率和效率的影响,对比分析纯氨和二氟一氯甲烷工质系统热效率和效率,为海洋温差能开发及商业级发电系统研建提供技术支撑。结果表明:系统热效率和效率与密切相关,氨水浓度的影响较小;纯氨质量流量远小于二氟一氯甲烷,且其热效率和效率均大于二氟一氯甲烷系统,是海洋温差发电系统较为理想的循环工质。

The Rankine cycle system for ocean temperature difference power generation and the effects of parameters such as evaporation pressure,ammonia concentration,and hot and cold sea temperature on the system thermal efficiency and tritium efficiency are studied,and the thermal efficiency and tritium of pure ammonia and chlorofluorocarbon working fluid systems is compared and analyzed,which provids technical support for the development of ocean temperature difference energy and the development of commercial-grade power generation systems.The results show that the system thermal efficiency and tritium efficiency are closely related,and the effect of ammonia concentration is small;the pure ammonia mass flow is far less than that of chlorofluorocarbon,and both its thermal efficiency and tritium efficiency are greater than the chlorofluorocarbon system.The system is ideal for circulating fluids of ocean fempature power gean system.