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Combining concentrating solar power with multiple effect distillation at inland locations - An economically viable option for Northern Chile?

: Branke, R.; Fluri, T.P.; Lefort, P.V.


Mancilla, Rodrigo (Ed.) ; American Institute of Physics -AIP-, New York:
23rd SolarPACES 2017, International Conference on Concentrating Solar Power and Chemical Energy Systems. Proceedings : 26-29 September 2017, Santiago, Chile
Woodbury, N.Y.: AIP, 2018 (AIP Conference Proceedings 2033)
ISBN: 978-0-7354-1757-1
Art. 160001, 9 pp.
International Conference on Concentrating Solar Power and Chemical Energy Systems (SolarPACES) <23, 2017, Santiago>
Conference Paper
Fraunhofer ISE ()

In several previous studies only coastal locations are considered to be suitable for concentrating solar thermal power plants integrated with multiple effect distillation (CSP+MED), even though inland locations provide a better solar resource. The presented paper presents the concept of pumping seawater to inland locations for desalination by means of CSP+MED plants. For selected locations in Northern Chile it is shown that solar resource and altitude are the two most important factors for the identification of suitable locations for CSP+MED cogeneration plants. A substantially higher solar resource at inland locations can compensate the effect of increasing altitude on pumping power. For the case study it could be shown that inland CSP+MED plants are economically viable in Northern Chile. For locations in the Antofagasta region with high annual DNI sum up to 2,600 kWh/(m²a) plants located 90 km away from the coast are preferable, in the Copiapó region with moderate annual DNI sums of around 2,000 kWh/(m²a) plants located 15 to 30 km away from the coast provide the best economic performance.