Document Type : Original Article


1 Faculty of Chemical and Materials Engineering, Shahrood University of Technology, Shahrood, Iran

2 Faculty of Mechanical Engineering, Shahrood University of Technology, Shahrood, Iran



The current research focuses on the utilization of three waste water streams from a power plant located in southwestern Iran for desalination purposes and to prevent the waste of heat from the boiler blowdown stream while reducing carbon dioxide emissions by preheating the cooling water. Three different scenarios are simulated using the Thermoflow-GT master 23 software, considering the conditions of power plant. The optimal values for the top brine temperature (TBT) of cooling water and the mass flow rate of the hot steam are selected by sensitivity analysis. The premier scenario consists of eight stages, with five stages dedicated to heat recovery (HGS) and three stages for heat rejection section (HRS). The optimal value for the TBT of cooling water is determined to be 90℃, the produced freshwater capacity in the desalination unit is found to be 1.69 kg/s, and the gain output ratio (GOR) of the system is about 3.60. The proposed unit requires 0.47 and 10.15 kg/s of hot steam and cooling water, respectively and the overall heat transfer coefficient is 2069.2 W/m2 ℃. In addition, the feasibility of utilizing a solar farm to generate the necessary thermal energy for the system is being evaluated.


Main Subjects

[1]     H. Birch, Desalination & Reuse Handbook 2022-2023. 2023.
[2]     T. Taner, A. S. Dalkilic, “A Feasibility study of solar energy-techno economic analysis from Aksaray city , Turkey,” 2017.
[3]     H. Eshghi, M. Zamen, and M. Kahani, “Energy and environmental investigation on photovoltaic system performance by application of square cross ‑ sectional two ‑ phase closed thermosyphon,” Environ. Sci. Pollut. Res., 2023, doi: 10.1007/s11356-023-27865-7.
[4]     H. Eshghi, M. Kahani, and M. Zamen, “Cooling of Photovoltaic Panel Equipped with Single Circular Heat Pipe : an Experimental Study,”, doi: 10.22044/rera.2022.11523.1097.
[5]     M. Zamen, M. Kahani, B. Rostami, and M. Bargahi, “Application of Al2O3/water nanofluid as the coolant in a new design of photovoltaic/thermal system: An experimental study,” Energy Sci. Eng., doi: 10.1002/ese3.1067.
[6]     T. Taner, “Economic analysis of a wind power plant: A case study for the Cappadocia region,” J. Mech. Sci. Technol. , doi: 10.1007/s12206-018-0241-6.
[7]     T. Taner, S. A. H. Naqvi, and M. Ozkaymak, “Techno-economic Analysis of a More Efficient Hydrogen Generation System Prototype: A Case Study of PEM Electrolyzer with Cr-C Coated SS304 Bipolar Plates,” Fuel Cells, doi: 10.1002/fuce.201700225.
[8]   Syed Arslan Hassan Naqvi, Tolga Taner, Mehmet Ozkaymak, and Hafiz Muhammad                              Ali, "Hydrogen Production through Alkaline Electrolyzers: A Techno-Economic and     Enviro-Economic Analysis", Chemical Engineering Thechnology, 8-          https://doi.: 10.18186/journal-of-thermal-engineering.331755.
[9]     T. Taner, “The micro-scale modeling by experimental study in pem fuel cell,”, Journal of Thermal Engineering, December 2017,
 [10] M. Alsehli, J. Choi, and M. Aljuhan, “A novel design for a solar powered multistage flash desalination,” Sol. Energy, doi: 10.1016/j.solener.2017.05.082.
[11]  L. Yang et al., “Photovoltaic-multistage desalination of hypersaline waters for simultaneous electricity, water and salt harvesting via automatic rinsing,” Nano Energy, doi: 10.1016/j.nanoen.2021.106163.
[12]  M. Zamen, M. Kahani, and G. Zarei, “Seawater Greenhouse Equipped with a Novel Solar Humidification-Dehumidification Desalination Unit in MAKRAN Coast: Fabrication and Experimental Study,” Water (Switzerland), doi: 10.3390/w15030539.
[13]  M. Zamen, M. Kahani, J. Yazdanpanahi, R. Abedini, and M. H. Ahmadi, “Modeling of a direct-contact humidification-dehumidification desalination unit in a 256 MW steam power plant using effluent streams: Case study,” Case Stud. Therm. Eng., doi: 10.1016/j.csite.2023.102966.
[14]  M. M. Aboelmaaref, “Hybrid solar desalination systems driven by parabolic trough and parabolic dish CSP technologies: Technology categorization, thermodynamic performance and economical assessment,” Energy Convers. Manag., doi: 10.1016/j.enconman.2020.113103.
[15]  I. Darawsheh, M. D. Islam, and F. Banat, “Experimental characterization of a solar powered MSF desalination process performance,” Therm. Sci. Eng. Prog., doi: 10.1016/j.tsep.2019.01.018.
[16]  N. El Moussaoui and K. Kassmi, “Modeling and Simulation studies on a multi-stage solar water desalination system,” Proc. 2019 Int. Conf. Comput. Sci. Renew. Energies, ICCSRE 2019 , doi: 10.1109/ICCSRE.2019.8807623.
[17]  B. Ghorbani, M. Mehrpooya, and M. Sadeghzadeh, “Developing a tri-generation system of power, heating, and freshwater (for an industrial town) by using solar flat plate collectors, multi-stage desalination unit, and Kalina power generation cycle,” Energy Convers. Manag., December 2017, doi: 10.1016/j.enconman.2018.03.040.
[18]  A. Al-Othman, M. Tawalbeh, M. El Haj Assad, T. Alkayyali, and A. Eisa, “Novel multi-stage flash (MSF) desalination plant driven by parabolic trough collectors and a solar pond: A simulation study in UAE,” Desalination, doi: 10.1016/j.desal.2018.06.005.
[19]  W. Teplitz-Sembitzky, “The use of Renewable Energies for Seawater Desalination - a Brief Assessment Technical Information W10e,” Tech. Inf.
[20]  C. Méndez and Y. Bicer, “Integrated system based on solar chimney and wind energy for hybrid desalination via reverse osmosis and multi-stage flash with brine recovery,” Sustain. Energy Technol. Assessments, February 2021, doi: 10.1016/j.seta.2021.101080.
[21]  M. . Eladawy, E. Elgendy, and S. Shaaban, “Performance Enhancement of an Integrated Solar Combined Cycle with Multi-Stage Flash Desalination Cycle as Bottoming Cycle,” Eng. Res. J., doi: 10.21608/erj.2020.132139.
[22]  S. Kabiri, M. H. Khoshgoftar Manesh, M. Yazdi, and M. Amidpour, “New procedure for optimal solar repowering of thermal power plants and integration with MSF desalination based on environmental friendliness and economic benefit,” Energy Convers. Manag., March 2021, doi: 10.1016/j.enconman.2021.114247.
[23]  G. Wang, B. Dong, and Z. Chen, “Design and behaviour estimate of a novel concentrated solar-driven power and desalination system using S–CO2 Brayton cycle and MSF technology,” Renew. Energy, doi: 10.1016/j.renene.2021.05.091.
[24]         B. Ghorbani, M. Mehrpooya, and M. Sadeghzadeh, “Developing a tri-generation system of power, heating, and freshwater (for an industrial town) by using solar flat plate collectors, multi-stage desalination unit, and Kalina power generation cycle,” Energy Convers. Manag., March 2018, doi: 10.1016/j.enconman.2018.03.040.