Annual thermoeconomic analysis of a concentrating solar power + photovoltaic + multi-effect distillation plant in northern Chile
A detailed annual performance and thermoeconomic analysis of a Concentrated Solar Power plant coupled to a Photovoltaic and a Multi-Effect Distillation plants (CSP + PV + MED) were performed using an extensive methodology based on an hourly simulation. The aim was to assess the impact of the PV integration into the CSP + PV plant and to evaluate the sizing of the plant in terms of the design parameters (PV plant size, solar multiple, Thermal Energy Storage capacity, and numbers of MED units) that allow achieving the lowest thermoeconomic electric and water costs (TCE and TCW). Results show that PV integration mainly increases the electric output but could increase the water production depending on the PV and CSP plants' sizes. Moreover, the PV plant cost is mainly allocated to electricity, decreasing the TCE, while on the TCW it has a moderate impact. Finally, it was found that the PV plant and the CSP plant size has contradictory roles between the costs, where the minimum TCE is obtained for large PV plant with an undersized CSP plant and one MED unit, and the minimum TCW is obtained for small PV plant with an oversized CSP plant and a large MED plant (5 units). ; CONICYT/REDES "Solar-Assisted Desalination: perspectives and potential for Chile" 180174 Fraunhofer Chile Research -Center of Solar Energy Technologies by the CORFO project 13CEI2-21803 Comision Nacional de Investigacion Cientifica y Tecnologica (CONICYT) CONICYT FONDAP 15110019 Spanish Government ENE2017-83973-R CONICYT PFCHA/Doctorado Nacional 2019/21191591 2018/21181537