Double cascade organic Rankine cycle for solar-driven reverse osmosis desalination
Double cascade organic Rankine cycle for solar-driven reverse osmosis desalination
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DOI：
10.1016/j.desal.2006.12.017
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发表时间：
2007-10
期刊：
影响因子：
9.9
通讯作者：
Agustín M. Delgado-Torres;L. García-Rodríguez
中科院分区：
文献类型：
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作者：
Agustín M. Delgado-Torres;L. García-Rodríguez
本文介绍了抛物槽式太阳能集热器在双级有机朗肯循环反渗透海水淡化中的应用。两种不同的太阳能收集器使用热油或顶部循环的有机流体操作。太阳能热系统驱动海水反渗透系统，如果热能备份可用，淡水产量约为1000 m3/d。异戊烷是从文献中提出的具有类似顶部温度范围的有机朗肯循环的流体中预选的一组工作流体中选择用于低温循环。该循环与用甲苯或六甲基二硅氧烷操作的最高温度循环耦合。结果表明，顶循环直接驱动反渗透装置高压泵所需的太阳能系统也能提供底循环辅助设备的用电需求。
This paper deals with the application of parabolic trough solar collectors to a double cascade of organic Rankine cycles for reverse osmosis desalination. Two different solar collectors are operated either with thermal oil or with the organic fluid of the top cycle. The solar thermal system drives a seawater reverse osmosis system with around 1000 m3/d of fresh water production if a thermal energy backup is available. Isopentane is selected for the low temperature cycle from a set of working fluids preselected among fluids proposed in the literature for organic Rankine cycles with similar top temperature range. This cycle is coupled to a top temperature cycle operated with toluene or hexametildisiloxane. Results show that the solar system required to directly drive the high pressure pump of the reverse osmosis unit with the top cycle is also able to provide the electricity requirement of auxiliaries by the bottom cycle.