 A new combined power and desalination system driven by low grade heat for concentrated brineChennan Li, D. Yogi Goswami, Andrew Shapiro, Elias K. Stefanakos and Gokmen Demirkaya Energy, 2012, vol. 46, issue 1, 582-595 Abstract: A new combined power and desalination system is proposed. This system is driven by low grade heat sources such as solar energy, geothermal or waste heat. This system combines a supercritical organic Rankine cycle (SORC), an ejector and a multi-effect distillation (MED) desalination system, which could be used for seawater or concentrated brine such as frac flowback water produced during natural gas mining. A theoretical model is presented and partially validated based on experimental results from the literature. The thermal performance of the proposed system is analyzed using the model and a parametric sensitivity analysis is carried out to quantify the performance of this combined power and water system. The combined system has an overall exergy efficiency close to 40% for salt concentration of 35 g/kg using a low temperature heat source at 150 °C The proposed system could treat concentrated brine up to 55 g/kg salt concentration with no additional energy input except heat supplied to the power cycle. Keywords: Multi-effect distillation (MED); Supercritical organic Rankine cycle (SORC); Ejector; Concentrated brine; Low grade heat; Cogeneration (search for similar items in EconPapers) Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:46:y:2012:i:1:p:582-595 DOI: 10.1016/j.energy.2012.07.050 Access Statistics for this article Energy is currently edited by Henrik Lund and Mark J. Kaiser More articles in Energy from Elsevier |
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