César Nieto-Londoño

Dr. César Nieto-Londoño

Universidad Pontificia Bolivariana, Medellín, Antioquia, Colombia
orcid

Research Focus & Metrics

Academic Career Length

23Years (2004-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 November 2020 in International Journal of Thermofluids
Verified
Journal Article
Open access
JFJosé J. Fierro
José J. Fierro
AEAna Escudero-Atehortua
Ana Escudero-Atehortua
César Nieto-LondoñoCésar Nieto-Londoño
César Nieto-Londoño
MGMauricio Giraldo
Mauricio Giraldo
Hussam JouharaHussam Jouhara
Hussam Jouhara
LWLuiz C. Wrobel
Luiz C. Wrobel

10 June 2023 in Energy
Verified
Journal Article
Open access
CMCarlos A. Marenco-Porto
Carlos A. Marenco-Porto
JFJosé J. Fierro
José J. Fierro
César Nieto-LondoñoCésar Nieto-Londoño
César Nieto-Londoño
LLLeonardo Lopera
Leonardo Lopera
AEAna Escudero-Atehortua
Ana Escudero-Atehortua
Hussam JouharaHussam Jouhara
Hussam Jouhara

4 February 2022 in Sustainability
Verified
Journal Article
Open access
PDF file
AOAna M Osorio
Ana M Osorio
LÚLuisa F. Úsuga
Luisa F. Úsuga
Rafael E VásquezRafael E Vásquez
Rafael E Vásquez
César Nieto-LondoñoCésar Nieto-Londoño
César Nieto-Londoño
MRMaria E. Rinaudo
Maria E. Rinaudo
Walter Leal FilhoWalter Leal Filho
Walter Leal Filho
This paper addresses the path followed by two private higher education institutions (HEI) in Colombia towards achieving carbon neutrality. The methodology followed by these universities to achieve a carbon-neutral certification, based on the Greenhouse Gas (GHG) Protocol, is first described. The process of developing the GHG inventory, projected towards the carbon neutrality of these organisations while using the standard ISO 14064:2006, involved a series of steps that were consolidated in three phases: (i) definition of the scope, collection of data and emissions quantification; (ii) analysis of results and mitigation actions; and (iii) verification and compensation strategies. Results for the HEIs are shown in terms of the organisational context, carbon footprint measurement, reduction, verification, and compensation. The case is presented for Universidad Pontificia Bolivariana, a multi-campus university that became the first carbon-neutral university in Latin America in 2017, and Universidad Ean, a single-campus university that became the second carbon-neutral university in Colombia in 2021, as verified by the Colombian Institute of Technical Standards and Certification (ICONTEC). This work shows that universities can play a key role in regional and global agendas with their contribution through the incorporation of sustainability strategies, since HEIs can not only achieve carbon neutrality, but they can help other organisations by delivering graduates who are aware of sustainability and provide specific training towards building a sustainability culture, which is needed for regenerative development.

28 October 2020 in Energies
Verified
Journal Article
Open access
PDF file
José Torres-MadroñeroJosé Torres-Madroñero
José Torres-Madroñero
César Nieto-LondoñoCésar Nieto-Londoño
César Nieto-Londoño
JSJulián Sierra
Julián Sierra
The use of fossil resources for electricity production is one of the primary reasons for increasing greenhouse emissions and is a non-renewable resource. Therefore, the electricity generation by wind and solar resources have had greater applicability in recent years. Hybrid Renewable Energy Systems (HRES) integrates renewable sources and storage systems, increasing the reliability of generators. For the sizing of HRES, Artificial Intelligence (AI) methods such as Genetic Algorithms (GA) and Particle Swarm Optimization (PSO) stand out. This article presents the sizing of an HRES for the Colombian context, taking into account the energy consumption by three typical demands, four types of wind turbines, three types of solar panels, and a storage system for the system configuration. Two optimization approaches were set-up with both optimization strategies (i.e., GA and PSO). The first one implies the minimization of the Loss Power Supply Probability (LPSP). In contrast, the second one concerns adding the Total Annual Cost (TAC) or the Levelized Cost of Energy (LCOE) to the objective function. Results obtained show that HRES can supply the energy demand, where the PSO method gives configurations that are more adjusted to the considered electricity demands.

28 April 2021 in Energies
Verified
Journal Article
Open access
PDF file
SGSandra Giraldo
Sandra Giraldo
DRDavid la Rotta
David la Rotta
César Nieto-LondoñoCésar Nieto-Londoño
César Nieto-Londoño
Rafael E VásquezRafael E Vásquez
Rafael E Vásquez
AEAna Escudero-Atehortua
Ana Escudero-Atehortua
The United Nations established 17 Sustainable Development Goals (SDGs), and the fulfillment of the 7th, defined as “Ensure access to affordable, reliable, sustainable, and modern energy for all”, requires energy industry transitions and digital transformations, which implies that diverse stakeholders need to move fast to allow the growth of more flexible power systems. This paper contains the case report that addresses the commercial digital transformation process developed at AES Colombia, through the implementation of a modern platform based on specialized applications that use Industry 4.0 tools. The Chivor hydropower project, a 1000-MW powerplant that covers 6% of Colombia’s demand, which is owned by AES Colombia and constitutes its primary asset, is first described. Then, a description of Colombia’s complex market (energy matrix, trading and dispatch mechanisms, and future projects) is presented. Then, the methodology followed for the digital transformation process using modern tools is described. The project, conceived as a broad framework, comprises applications for the management of hydrological, operational, and market information, commercial information systems and platforms to facilitate consultation and analysis by different users. Such an innovative project in the Latin American context has been developed in order reduce risks and to contribute to a sustainable energy supply for the future.

1 January 2019 in Composite Structures
Verified
Journal Article
Closed access
CHCamilo Herrera
Camilo Herrera
MCMariana Correa
Mariana Correa
VVValentina Villada
Valentina Villada
JVJuan D. Vanegas
Juan D. Vanegas
JGJuan G. García
Juan G. García
JSJulián Sierra
Julián Sierra