Journal
APPLIED ENERGY
Volume 278, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.apenergy.2020.115586
Keywords
Drinking water; Energy; Nanofiltration; Scenario-based methods; Water-energy-nexus
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Funding
- Texas A&M Engineering Experiment Station (TEES)
- Texas A&M Energy Institute
- NSF [ECCS-1611301, CCF-1934904]
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This paper studies a co-design of solar generation-based nano-grid and water treatment in remote areas. The goal is to provide the minimum essential drinking water and electricity needs to communities in remote, underdeveloped regions such as Colonias in South Texas at the United States-Mexico border. It is shown that a portable nanofiltration treatment unit, powered by only a few photovoltaic (PV) panels augmented with batteries and supplemented with water storage tanks, offers crucial flexibility in accommodating solar-powered electricity service which is intermittent in its nature. Given the lack of infrastructure and associated primitive conditions in Colonias, the proposed planning and operation of the nano-grid leverages the flexibility of power consumption for the water filtration process to compensate for the fluctuating solar PV generation. A risk-tunable, scenario based optimization is formulated to quantify the risks associated with the design, given different weather scenarios. The case study based on bench-scale experiments, optimization, and economic considerations coupled with historical weather data for targeted Colonias in Texas suggest the unique benefits of joint optimization of both electricity and water needs.
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