On-Off Control Strategy in a BWRO System under Variable Power and Feedwater Concentration Conditions
| Autor: | I. Nuez, A. Ruiz-García |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Boiler feedwater
02 engineering and technology process control 010501 environmental sciences lcsh:Technology 01 natural sciences Desalination lcsh:Chemistry desalination reverse osmosis 020401 chemical engineering Process control General Materials Science 0204 chemical engineering Process engineering Reverse osmosis lcsh:QH301-705.5 Instrumentation 0105 earth and related environmental sciences Fluid Flow and Transfer Processes Brackish water lcsh:T business.industry Process Chemistry and Technology General Engineering Process (computing) lcsh:QC1-999 Computer Science Applications Renewable energy Power (physics) lcsh:Biology (General) lcsh:QD1-999 lcsh:TA1-2040 variable regime Environmental science lcsh:Engineering (General). Civil engineering (General) business optimization lcsh:Physics |
| Zdroj: | Applied Sciences Volume 10 Issue 14 Applied Sciences, Vol 10, Iss 4748, p 4748 (2020) |
| ISSN: | 2076-3417 |
| DOI: | 10.3390/app10144748 |
| Popis: | Although reverse osmosis (RO) is the technology of choice for solving water shortage problems, it is a process that consumes large amounts of energy. Brackish water (BW) desalination is more efficient than seawater desalination due to the lower salinity of the feedwater source. This makes coupling renewable energy sources with BWRO systems attractive. The operation of this type of systems is complex and requires the design of control strategies to obtain optimal operation. The novelty of this work was to propose a simple on-off control strategy for operating a BWRO system that can work with one and two stages and with different configurations considering six spiral wound membrane elements per pressure vessel (PV). The feedwater quality variations of a real groundwater well were used together with a computational tool to simulate the response of the different configurations with the purpose of selecting the most appropriate depending on the input power to the BWRO system. The most suitable configurations were found to be 1:0, 2:1 and 3:2 (PV first stage:PV second stage). It was additionally found that increased feedwater concentrations resulted in shorter operating ranges to maximize permeate water production for the 1:0 and 2:1 configurations, and that the 3:2 configuration was the most suitable for most of the operating range. |
| Databáze: | OpenAIRE |
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