Energy-Optimal Control of RO Desalination
| Autor: | Han Gu, Larry Xingming Gao, Yoram Cohen, Panagiotis D. Christofides, Anditya Rahardianto |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Membrane permeability
business.industry General Chemical Engineering General Chemistry Optimal control Desalination Industrial and Manufacturing Engineering Volumetric flow rate Variable-frequency drive Control theory Control system Environmental science Process engineering business Energy (signal processing) |
| Zdroj: | Industrial & Engineering Chemistry Research. 53:7409-7420 |
| ISSN: | 1520-5045 0888-5885 |
| Popis: | A novel model-based control system for the operation of a spiral-wound RO membrane desalination system was developed with a focus on maintaining energy-optimal operation. The control scheme utilized an operational model for spiral-wound RO desalting with a supervisory controller providing real-time updates of membrane permeability and the appropriate feed pressure set-points for maintaining the target permeate productivity at the lowest feasible specific energy consumption. System RO feed pressure and flow rates were controlled by a lower-level RO controller through adjustment of the RO high pressure feed pump, variable frequency drive, and RO concentrate valve. Seawater desalination tests with an RO plant, capable of permeate productivity up to 18 000 gallons/day, demonstrated effective self-adaptive energy-optimal operation, subject to feed salinity fluctuations, constraints imposed by the system’s physical limitations (i.e., minimum and maximum feasible operational pressures and flow rates), and the th... |
| Databáze: | OpenAIRE |
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