Techno-economic optimization of a scaled-up solar concentrator combined with CSPonD thermal energy storage
Author(s)Musi, Richard; Grange, Benjamin; Diago, Miguel; Topel, Monika; Armstrong, Peter; Calvet, Nicolas; Slocum, Alexander H; ... Show more Show less
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A molten salt direct absorption receiver, CSPonD, used to simultaneously collect and store thermal energy is being tested by Masdar Institute and MIT in Abu Dhabi, UAE. Whilst a research-scale prototype has been combined with a beam-down tower in Abu Dhabi, the original design coupled the receiver with a hillside heliostat field. With respect to a conventional power-tower setup, a hillside solar field presents the advantages of eliminating tower costs, heat tracing equipment, and high-pressure pumps. This analysis considers the industrial viability of the CSPonD concept by modeling a 10 MWe up-scaled version of a molten salt direct absorption receiver combined with a hillside heliostat field. Five different slope angles are initially simulated to determine the optimum choice using a combination of lowest LCOE and highest IRR, and sensitivity analyses are carried out based on thermal energy storage duration, power output, and feed-in tariff price. Finally, multi-objective optimization is undertaken to determine a Pareto front representing optimum cases. The study indicates that a 40° slope and a combination of 14 h thermal energy storage with a 40-50 MW[subscript e] power output provide the best techno-economic results. By selecting one simulated result and using a feed-in tariff of 0.25 $/kWh, a competitive IRR of 15.01 % can be achieved.
DepartmentMassachusetts Institute of Technology. Department of Mechanical Engineering
AIP Conference Proceedings
Musi, Richard, et al. "Techno-Economic Optimization of a Scaled-up Solar Concentrator Combined with CSPonD Thermal Energy Storage." AIP Conference Proceedings,1850.1 (2017): p. 110010.
Final published version