Evaluation of a solar-driven adsorption desalination system for Brazilian semiarid region

IF 5.7 3区环境科学与生态学 Q1 WATER RESOURCES

Applied Water Science Pub Date : 2024-09-05 DOI:10.1007/s13201-024-02265-5

Roberto Capparelli Marçal, Mário Benjamim Baptista de Siqueira

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Abstract

In this study, the effect of using a hybrid solar thermal-activated adsorption desalination system for brackish water is evaluated under the climatic conditions of the Brazilian semiarid region. The proposed theoretical model utilizes climatic data from the meteorological station in Campina Grande, PB, and adsorptive kinetics data of Fuji Davison RD 260 silica gel to predict the performance indices of the specific daily water production (SDWP), specific cooling power (SCP), and coefficient of performance (COP) performance coefficients over a characteristic day. The SDWP value of 6.26 m3/ton, SCP ranging from 50 to 300 W/kg, and an average COP of 0.5 were obtained, considering variations in global horizontal irradiance in the ACDS system and transient ambient temperature. It was observed that both the production of desalinated water and the refrigeration effect increase with the rise in daily solar irradiance. The variation in the number of solar collectors used in the system and their optimality, as well as the variation in the salinity index of the feed source, impacted the evaluated performance coefficients.

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评估巴西半干旱地区的太阳能驱动吸附海水淡化系统

本研究评估了在巴西半干旱地区的气候条件下使用混合太阳能热激活吸附海水淡化系统淡化苦咸水的效果。所提出的理论模型利用巴西坎皮纳格兰德气象站的气候数据和富士戴维森 RD 260 硅胶的吸附动力学数据，预测了特定日产水量（SDWP）、特定冷却功率（SCP）和性能系数（COP）等性能指标。考虑到 ACDS 系统中全球水平辐照度和瞬态环境温度的变化，得出 SDWP 值为 6.26 立方米/吨，SCP 为 50 至 300 瓦/千克，平均 COP 为 0.5。据观察，随着日太阳辐照度的增加，淡化水的产量和制冷效果都会增加。系统中使用的太阳能集热器数量及其优化程度的变化，以及进料源盐度指数的变化，都对所评估的性能系数产生影响。

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