Analysis and optimization of LT-MED system powered by an innovative CSP plant
Analysis and optimization of LT-MED system powered by an innovative CSP plant
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DOI：
10.1016/j.desal.2017.03.019
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发表时间：
2017-07
期刊：
影响因子：
9.9
通讯作者：
Peyman Talebbeydokhti;A. Cinocca;R. Cipollone;B. Morico
中科院分区：
文献类型：
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作者：
Peyman Talebbeydokhti;A. Cinocca;R. Cipollone;B. Morico
在世界许多地区，饮用水的获取是一个日益严重的问题。海水淡化是提供淡水的主要来源。低温多效蒸馏（LT-MED）等热脱盐系统经历了许多发展阶段，以提高该系统的能源效率：该技术使用蒸汽作为其生产淡水过程的一部分。对热脱盐工艺的一些改进减少了能源消耗。为了进一步提高海水淡化厂的能源效率，应考虑和评估可再生能源，以满足全球对该技术的需求。本文介绍了一种新型抛物槽式聚光太阳能发电系统（PT-CSP）的低温多效蒸发系统，该系统的参考循环为DEC，即以空气为传热介质的离散埃里克森循环。本研究探讨了利用CSP-DEC工厂的余热为LT-MED技术提供燃料。还讨论了CSP-DEC + LT-MED装置的装置布局和性能。由于CSP-DEC可以在对发电效率影响较小的情况下为LT-MED提供蒸汽，因此CSP-DEC可以优化以降低比传统CSP更低的能量损失，同时仍然产生更多的淡水。
The access to drinking water is an increasing problem in the World in many geographical areas. The desalination of seawater is the main source to provide fresh water. The thermal desalination systems such as Low Temperature Multi-Effect Distillation (LT-MED) have gone through many stages of development to increase the energy efficiency of this system: this technology uses steam as part of its process to produce fresh water. Some improvements on the thermal desalination processes have resulted in less energy consumption. In order to further increase the energy efficiency in the desalination plants, renewable energy sources should be considered and evaluated in order to satisfy the worldwide demand of this technology. This paper presents an LT-MED system integrated with a novel Parabolic Trough Concentrated Solar Power (PT-CSP) plant whose reference cycle is calledDEC,Discrete Ericsson Cycle which uses air as heat transfer fluid. This study explores the use of the waste heat in CSP-DEC plant to feed an LT-MED technology. It also discusses the plant layouts and performances of CSP-DEC + LT-MED plant. Because CSP-DEC can perform steam supply for LT-MED with less affecting on the electricity generation efficiency, CSP-DEC can optimize to lower energy loss than conventional CSP, while still producing larger quantity of fresh water.