Simulation studies and experimental validation on solar multi - effect desalination system

Solar Compass Pub Date : 2025-02-10 DOI:10.1016/j.solcom.2025.100110

Thilagan K., Advaith S., Mani A.

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Abstract

A solar energy-based multi - effect desalination (MED) system simulation model is developed for each system-level component using sea water as a working fluid. The solar flat plate collector arrays are modelled on the TRNSYS 18 platform. Thiruvananthapuram weather data is made to link with a flat plate module. Flash chamber, multi - effect evaporator, condenser and ejector are modelled in the MATLAB 2016b platform. Output from solar flat plat collector field and weather data from TRNSYS 18 platform are live linked with the platform using TRNSYS - MATLAB live link plugin mode. Thermophysical properties of sea water are modelled based on temperature, pressure and salinity. The simulation helps to understand the MED’s systematic behaviour using sea water properties. Besides, this gives an in-depth understanding of the component-level behaviour of solar MED system with respect to incident solar energy. Also, this system-level model is capable of predicting distillate output from the system with different operating conditions. Using this model, the simulation results are validated with the experiments conducted on a solar MED system with 10 m³ of fresh water as a capacity in Vivekananda Kendra, Kanyakumari, India. It is observed that the average freshwater production rate was 300 kg.h^{\protect \relax \special {t4ht=−}1} during peak production between 10:00 to 15:00 h both in simulation and experimental systems.

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太阳能多效海水淡化系统的仿真研究与实验验证

以海水为工作流体，建立了基于太阳能的多效脱盐（MED）系统仿真模型。太阳能平板集热器阵列在TRNSYS 18平台上建模。Thiruvananthapuram的天气数据与平板模块相连。在MATLAB 2016b平台上对闪蒸室、多效蒸发器、冷凝器和喷射器进行了建模。利用TRNSYS - MATLAB实时链接插件模式，将太阳能平板集热器现场输出和TRNSYS 18平台的天气数据实时链接到平台上。海水的热物理性质是根据温度、压力和盐度建立模型的。模拟有助于利用海水的特性来理解地中海的系统行为。此外，这使我们对太阳能MED系统在入射太阳能方面的组件级行为有了深入的了解。此外，该系统级模型能够预测不同操作条件下系统的馏分输出。利用该模型，在印度Kanyakumari的Vivekananda Kendra以10 m3淡水为容量的太阳能MED系统上进行了实验，验证了模拟结果。在模拟和实验系统中，在10:00 ~ 15:00 h的生产高峰期，平均淡水产量为300 kg.h\protect \relax \special {t4ht=−}1。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Solar Compass

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