集约化多级回热式太阳能海水淡化装置  

A Modularized Solar Seawater Desalination System with Multi-effect Evaporation and Heat Recovery

作　　者：肖红升[1,2] 刘振华[3] 陈振玉[1] 夏宁 

机构地区：[1]南通职业大学机械工程学院,江苏南通226007 [2]江苏省光热组件及控制工程技术研究中心,江苏南通226301 [3]上海交通大学机械与动力工程学院,上海200240 [4]桑夏太阳能股份有限公司,江苏南通226301

出　　处：《动力工程学报》2015年第12期1018-1022,1029,共6页Journal of Chinese Society of Power Engineering

基　　金：国家自然科学基金资助项目(51276113)

摘　　要：设计了一种由多个集热/回热单元组成的小型集约化多级回热式太阳能海水淡化装置,详细阐述了该装置的结构及组成.通过实验方法对该结构海水淡化装置的淡水制水量在不同天气情况和运行控制方式下进行比较研究,获得了进一步优化其制水性能系数、提高总效率的方法.结果表明:采用压力自由波动的方式控制蒸汽压力,装置的最高集热温度控制在130℃,2.31m2采光面积的淡化装置高峰时段制水量最高可达到1.982kg/(h·m^2),全天制水量可达到7.869kg/m^2,制水性能系数最高可达2.5左右,总效率最高可达1.35左右,系统集热效率可达0.4左右,性能较为优越.The structure and components of a newly-designed small-sized modularized seawater desalination system powered by solar energy with multi-effect heat recovery units were introduced in detail.Through tests under different weather conditions and in different pressure regulating ways,the freshwater yield of the solar seawater desalination system was analyzed,thus obtaining the ways to improve the performance ratio and total efficiency of the system.Results show that via the free pressure setting method to regulate the steam pressure,and by controlling the maximum collecting temperature at 130°C,the freshwater yield of unit collecting area in the modularized system with about 2.31 m^2 daylight gathering area can reach1.982kg/（h·m^2）,and the all-day freshwater yield is up to 7.869kg/m^2,with a highest performance ratio up to 2.5,the total efficiency up to 1.35,and the system collecting efficiency up to 0.4,indicating outstanding performance of the solar seawater desalination system.

关 键 词：太阳能 海水淡化 多级回热 CPC聚光板 

分 类 号：TK515[动力工程及工程热物理—热能工程]