海洋温差能氨水工质引射器对热力循环性能影响的理论研究  

Theoretical Study on the Impact of Ocean Thermal Energy Conversion Ammonia Hydroxide Ejector on Thermal Cycle Performance

作　　者：王洪雨 刘伟民 刘延俊[1,2] 陈云[1] 彭景平 翟晓宇 WANG Hong-yu;LIU Wei-min;LIU Yan-jun;CHEN Yun;PENG Jing-ping;ZHAI Xiao-yu(Shang dong Vniversity,lnstitue of Marince Science and Techology,Qing dao 266237,Shang dong Prorice,China;School of Mechanical Engineering,Shandong University,Key Laboratory of High Efficiency and Clean Mechanical Manufacture,Jinan 250061,Shandong Province,China;The First Institute of Oceanography,Ministry of Natural Resources,Qingdao 266061,Shandong Province,China)

机构地区：[1]山东大学海洋研究院,山东青岛266237 [2]山东大学机械工程学院“高效洁净先进制造”教育部重点实验室,山东济南250061 [3]自然资源部第一海洋研究所,山东青岛266061

出　　处：《海洋技术学报》2020年第3期68-74,共7页Journal of Ocean Technology

基　　金：国家自然科学基金资助项目(51709055)。

摘　　要：本文研究了使用引射器来提高海洋温差能热力循环效率,热力循环采用氨-水混合工质,通过对使用引射器与没使用引射器的热力循环进行数值模拟和对比分析,探究不同工质浓度、透平进口压力和温、冷海水温度对循环净输出功和热力循环效率的影响。研究结果表明,使用引射器后循环净输出功和热力循环效率都得到了提高。随着氨工质浓度的增加,循环净输出功不断增加,热力循环效率先增大后减小;随着透平进口压力的变化,循环净输出功和热力循环效率均先增大后减小;循环净输出功和热力循环效率随温海水温度的升高而升高,随冷海水温度的升高而减小。Ejectors are used to improve the efficiency of thermal cycle of Ocean thermal energy conversion in this paper,ammonia-water mixture is used as working medium,The effects of different working medium mass fraction,turbine inlet pressure,and warm and cold seawater temperature on the net output and the thermal cycle efficiency were investigated in the thermal cycle with and without the ejector by numerical simulation and comparative analysis.It is found that the net output and the thermal cycle efficiency are improved by using the ejector.The net output increases continuously and the thermal cycle efficiency increases first and then decreases with the increase of ammonia working medium mass fraction;the net output and the cycle thermal efficiency both increase first and then decrease with the increase of the inlet pressure of the turbine;The net output and the thermal cycle efficiency increase with the increase of warm seawater temperature and decrease with the increase of cold seawater temperature.

关 键 词：海洋温差能 引射器 工质浓度 透平进口压力 热力循环效率 净输出功 

分 类 号：P743.4[天文地球—海洋科学]