Reducing electric energy consumption in linear Fresnel collector solar fields coupled to thermal desalination plants by optimal mirror defocusing

In many parts of the world, desalination is the only viable and economic solution to the problem of fresh water shortage. The current commercial desalination technologies rely on fossil fuels and are thus associated with high greenhouse gas emissions that are a major cause of climatic changes. Solar thermal-driven multi-effect distillation with thermal vapor compression is a clean alternative to conventional desalination technologies. To comprehend this process, as well as its features and limitations, extensive modeling is required. In this work, we proposed a plant design based on a solar field with a linear Fresnel collector that supplies heat to a multi-effect distillation plant with thermal vapor compression. The solar desalination plant model is implemented in the Engineering Equation Solver (EES). The system performance is investigated and a control strategy for reducing electric pumping is proposed. Results showed that 1 m2 of the solar field produces 8.5 m3 of distillate per year. The proposed control strategy resulted in a 40% reduction in electric pumping energy. Our results highlight the versatility of the linear Fresnel collector when coupled with thermal desalination.

[1]  Fahad A. Al-Sulaiman,et al.  Entropy, exergy, and cost analyses of solar driven cogeneration systems using supercritical CO2 Brayton cycles and MEE-TVC desalination system , 2016 .

[2]  Lourdes García-Rodríguez,et al.  Experimental assessment of connection of an absorption heat pump to a multi-effect distillation unit , 2010 .

[3]  Mokhtar Bidi,et al.  Effects of tracking modes on the performance of a solar MED plant , 2016 .

[4]  B. Bouchekima.  A solar desalination plant for domestic water needs in arid areas of South Algeria , 2003 .

[5]  Benjamin Boillot,et al.  MED seawater desalination using a low-grade solar heat source , 2016 .

[6]  Osman A. Hamed,et al.  Concentrating solar power for seawater thermal desalination , 2016 .

[7]  Matthew D. Stuber,et al.  Pilot demonstration of concentrated solar-powered desalination of subsurface agricultural drainage water and other brackish groundwater sources , 2015 .

[8]  Lidia Roca,et al.  Economic optimal control applied to a solar seawater desalination plant , 2014, Comput. Chem. Eng..

[9]  Lourdes García-Rodríguez,et al.  Design recommendations for a multi-effect distillation plant connected to a double-effect absorption heat pump: A solar desalination case study , 2010 .

[10]  Guillermo Zaragoza,et al.  Large-scale solar desalination by combination with CSP: Techno-economic analysis of different options for the Mediterranean Sea and the Arabian Gulf , 2015 .

[11]  A. S. Nafey,et al.  Exergy and thermo-economic analyses of a combined solar organic cycle with multi effect distillation (MED) desalination process , 2011 .

[12]  Saffa Riffat,et al.  Opportunities for solar water desalination worldwide: Review , 2013 .

[13]  Ali M. El-Nashar,et al.  Solar Thermal Processes , 2009 .

[14]  Mehmet Sait Söylemez,et al.  Design and computer simulation on multi-effect evaporation seawater desalination system using hybrid renewable energy sources in Turkey , 2012 .

[15]  Sami G. Al‐Ghamdi,et al.  Energy efficient multi-effect distillation powered by a solar linear Fresnel collector , 2018, Energy Conversion and Management.

[16]  Mehran Ameri,et al.  Techno economic feasibility analysis of Linear Fresnel solar field as thermal source of the MED/TVC desalination system , 2016 .

[17]  A. S. Nafey,et al.  Thermo-economic analysis of solar thermal power cycles assisted MED-VC (multi effect distillation-vapor compression) desalination processes , 2011 .

[18]  Khaled M. Bataineh,et al.  Multi-effect desalination plant combined with thermal compressor driven by steam generated by solar energy , 2016 .

[19]  Soteris A. Kalogirou,et al.  Seawater desalination using renewable energy sources , 2005 .

[20]  Eli Feinerman,et al.  Potential of solar desalination in Israel and in its close vicinity , 2001 .

[21]  Ali M. El-Nashar,et al.  The economic feasibility of small solar MED seawater desalination plants for remote arid areas , 2001 .

[22]  Miss A.O. Penney.  (b) , 1974, The New Yale Book of Quotations.

[23]  Ashraf S. Hassan,et al.  A techno-economic review of solar-driven multi-effect distillation , 2017 .

[24]  H. K. Abdulrahim,et al.  Impacts of tube bundle arrangement and feed flow pattern on the scale formation in large capacity MED desalination plants , 2015 .

[25]  Hassan E.S. Fath,et al.  A comprehensive techno-economical review of indirect solar desalination , 2011 .

[26]  R. Hashemi,et al.  A Review of Desalination Trends in the Gulf Cooperation Council Countries , 2014 .

[27]  Ashraf S. Hassan,et al.  A review of Qatar’s water resources, consumption and virtual water trade , 2017 .

[28]  Patricia Palenzuela,et al.  Concentrating Solar Power and Desalination Plants , 2019, Solar Resources Mapping.

[29]  Noreddine Ghaffour,et al.  Technology development and application of solar energy in desalination: MEDRC contribution , 2011 .

[30]  M. Chaibi.  An overview of solar desalination for domestic and agriculture water needs in remote arid areas , 2000 .

[31]  Carmelo Mineo,et al.  MED parallel system powered by concentrating solar power (CSP). Model and case study: Trapani, Sicily , 2015 .

[32]  C. Tsallis.  Entropy , 2022, Thermodynamic Weirdness.

[33]  Thomas de Quincey.  [C] , 2000, The Works of Thomas De Quincey, Vol. 1: Writings, 1799–1820.

[34]  Mohamed Darwish,et al.  Performance of thermal vapor compression , 2014 .

[35]  Lidia Roca,et al.  Dynamic modeling and performance of the first cell of a multi-effect distillation plant , 2014 .

[36]  Guillermo Zaragoza,et al.  Steady state model for multi-effect distillation case study: Plataforma Solar de Almería MED pilot plant , 2014 .

[37]  M. Darwish,et al.  Multi-effect boiling systems from an energy viewpoint , 2006 .