Thermal desalination from rejected heat of power cycles working with CO2-based working fluids in CSP application: A focus on the MED technology

• DOI: 10.1016/j.seta.2023.103481
• Publication Date: 2023-10-11T16:18:55Z
• Authors: Michele Doninelli; Ettore Morosini; Giancarlo Gentile; Lorenza Putelli; Gioele Di Marcobe...; Marco Binotti; Giampaolo Manzolini
• Keywords: Cogeneration; Working fluid; Rankine cycle

This work analyses the integration of concentrated solar power plants based on innovative sCO2 cycles and transcritical CO2-based mixtures with thermal desalination adopting conventional MED technology. In these cogeneration plants, all heat rejected from cycle is exploited by system, avoiding any parasitic electric consumption fans air-cooled rejection unit. The layout proposed exploits both latent effects, 3 to 8, sensible match at best temperature level which available cycles, delivered plant through an intermediate loop demineralized water. cogenerative solution designed in its components this as a 100 MWel tower CSP located Sevilla, resulting yearly production around 400 GWhel/year between 3.5 4.2 Mm3 freshwater produced, depending configuration analysed. Various layouts are investigated, working CO2 + C6F6 mixture fluids. Regarding plant, detailed models for field optical analysis receiver adopted. seawater when coupled category presents 180 140 kWh/m3. Finally, performances compared terms levelized cost electricity, slight edge water, range 1 2 $/m3.