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Luceño Sánchez, José Antonio Martín Martín, Mariano 2025-12-11T10:23:30Z 2025-12-11T10:23:30Z 2019 José A. Luceño, Mariano Martín, Optimal design of aging systems: A-frame coolers design under fouling, Computers & Chemical Engineering, Volume 122, 2019, Pages 47-58, ISSN 0098-1354, https://doi.org/10.1016/j.compchemeng.2018.05.015. (https://www.sciencedirect.com/science/article/pii/S0098135418304757) 0098-1354 http://hdl.handle.net/10366/168228 10.1016/j.compchemeng.2018.05.015 [EN]This work presents a parametric programming framework for the optimal design and operation of systems with performance loss over time. A two-stage procedure is proposed. The unit is designed for the operating conditions just before maintenance. In a second stage, a multiperiod problem is solved for the optimal the operation of the unit over time including cleaning costs. The minimum operating cost as a function of the cycle length determines the operating cycle and the unit design. The methodology is applied to A-frame cooling systems under fouling conditions, where fouling affects the pressure drop and the global heat transfer coefficient. The sigmoidal deposition profile results in an optimal cycle time of 8 years. This design allows reducing the energy required to around 4% of the energy produced by the concentrated solar power plant. It is a promising result that can be affected by plant layout and ground availability. The authors acknowledge the TCUE fellowship from Fundación Universidad – Empresa USAL 2015 application/pdf eng ELSEVIER Attribution-NoDerivatives 4.0 Internacional http://creativecommons.org/licenses/by-nd/4.0/ info:eu-repo/semantics/openAccess Energy Concentrated solar power Dry cooling Mathematical Optimization Simultaneous unit design and operation 3303 Ingeniería y Tecnología Químicas Optimal design of aging systems: A-frame coolers design under fouling info:eu-repo/semantics/article info:eu-repo/semantics/submittedVersion https://doi.org/10.1016/j.compchemeng.2018.05.015 Computers & Chemical Engineering 122 47 58