Browsing by Author "Cardemil, José M."

Now showing 1 - 2 of 2
  • No Thumbnail Available
    Item
    A detailed multi-component heat configuration assessment for complex industrial plants through Monte Carlo simulations: a case study for the cement industry
    (2025) Wolde Ponce, Ian; Starke, Allan R.; da Silva, Alexandre K.; Cardemil, José M.
    The decarbonization of industrial plants involves the integration of cleaner and more efficient energy processes, which might include electrification, renewable energy sources, waste heat recovery, and thermal energy storage. The technical viability of each assisting technology is usually assessed through direct simulations of the integrated system, which makes evaluation often difficult. This study proposes a methodology for estimating the heat demands of different configurations of a generic cement plant, aiming to assess the fuel consumption for the several integration cases considered. The waste heat and the mass flow rate of the internal streams are considered variable parameters, which lead to 32 distinct integration cases and 16,000 plant simulations. The operating conditions are generated through a Monte Carlo approach, ensuring the probability distribution of the results. The waste heat measures increase the plant’s heat demand and hinder its efficiency. A linear regression for fuel heat demand shows results ranging from 113.72MW to 492.62MW
  • Thumbnail Image
    Item
    Green Hydrogen Cogeneration Through Solid-Particle Concentrated Solar Power System Integrated With Proton Exchange Membrane Stacks
    (2025) Arias Olivares, Ignacio Javier; Gesser Battisti, Felipe; Cardemil, José M.; Valenzuela, Loreto; Escobar, Rodrigo
    This paper presents a techno-economic analysis of third-generation (Gen3) Concentrated Solar Power (CSP) systems using solid particles and Proton Exchange Membrane (PEM) stacks for green hydrogen production. The study assesses the Levelized Cost of Hydrogen (LCOH2) as a key metric. A 100 MWe CSP plant can achieve a LCOE of 55-60 $/MWh, with a Solar Multiple (SM) of 3 and Thermal Energy Storage (TES) capacity between 7 h and 16 h. Results show that a 1:1 ratio between PEM and CSP capacities is not needed to optimize hydrogen production, enabling hybrid schemes for electricity and hydrogen co-generation. However, the achieved LCOH2 does not meet IEA’s 2030 target of below 4 $/kg-H2. Key challenges include reducing PEM costs for large-scale applications and ensuring a cost of electricity below 55 $/MWh. Addressing these issues will be crucial for the economic viability of Gen3 CSP+PEM systems in the transition to sustainable hydrogen production.