|March 2016 - Present||Senior Lecturer, Southern Cross University ‐ School of Environment, Science and Engineering|
|March 2014 - March 2016||Postdoc Research Fellow, Commonwealth Scientific and Industrial Research Organisation ‐ CSIRO Energy Centre|
|June 2011 - February 2014||Assistant Professor, Universidad del Norte - Colombia|
|August 2006 - May 2011||Research Assistant, University of South Florida ‐ Clean Energy Research Center|
Honors and Awards
- Silver Medal for best GPA in Mechanical Engineering Department, Universidad del Norte, 2001
- Young Researcher, COLCIENCIAS, 2001-2002
- Best Dissertation and Summa cum Laude Master in Mechanical Engineering, Universidad del Norte, 2004
- Best Student Paper Award, Advanced Energy Systems Division, ASME 2014
- Principles of Solar Engineering
- Thermal Engineering
|August 2006 - May 2011||PhD, University of South Florida ‐ Department of Chemical and Biomedical Engineering|
|February 2001 - June 2004||MSc(ME), Universidad del Norte - Colombia ‐ Department of Mechanical Engineering|
|February 1996 - December 2000||BS(ME), Universidad del Norte - Colombia ‐ Department of Mechanical Engineering|
PO Box 157
Lismore NSW 2480
Telephone: +61 2 6620 3783
Journal articles (31)
Dynamic modeling of solar radiation disturbances based on a biomimetic cloud shading model Journal of Solar Energy Engineering (2018)
Variation in direct solar radiation is one of the main disturbances that any solar system must handle to maintain efficiency at acceptable levels. As known, solar radiation profiles change due to earth’s movements. Even though ...
Dynamic performance of an aiming control methodology for solar central receivers due to cloud disturbances Renewable Energy (2018)
An appropriate control of the heat flux distribution over the solar central receiver is essential to achieve an efficient and safe operation of solar tower systems. High solar radiation variation due to moving clouds may ...
Experimental and theoretical analysis of the Goswami cycle operating at low temperature heat sources Journal of Energy Resources Technology (2018)
The Goswami cycle is a cycle that combines an ammonia–water vapor absorption cycle and a Rankine cycle for cooling and mechanical power purposes by using thermal heat sources such as solar energy or geothermal steam. ...
Multivariable closed control loop methodology for heliostat aiming manipulation in solar central receiver systems Journal of Solar Energy Engineering (2018)
Maintaining receiver’s thermal stresses and corrosion below the material limits are issues that need careful attention in solar thermal towers. Both depend on heliostats’ aiming points over the central receiver and available direct solar radiation ...
Optimizing orientation of piezoelectric cantilever beam for harvesting energy from human walking Energy Conversion and Management (2018)
Harvesting energy from human body motion for powering small scale electronic devices is attracting research interest in recent years. Piezoelectric energy harvester (PEH) capable of harvesting energy from vibratory movement is a suitable candidate for ...
Characteristics of auto-ignition in internal combustion engines operated with gaseous fuels of variable methane number Journal of Energy Resources Technology (2017)
This paper explores the feasibility of using Syngas with low methane number as fuel for commercial turbocharged internal combustion engines. The effect of methane number (MN), compression ratio (CR), and intake pressure on auto-ignition tendency ...
Energy, exergy and economic evaluation comparison of small-scale single and dual pressure organic rankine cycles integrated with low-grade heat sources Entropy (2017)
Low-grade heat sources such as solar thermal, geothermal, exhaust gases and industrial waste heat are suitable alternatives for power generation which can be exploited by means of small-scale Organic Rankine Cycle (ORC). This paper combines ...
Thermal and exergetic analysis of the Goswami cycle integrated with Mid-Grade heat sources Entropy (2017)
This paper presents a theoretical investigation of a combined Power and Cooling Cycle that employs an Ammonia-Water mixture. The cycle combines a Rankine and an absorption refrigeration cycle. The Goswami cycle can be used in ...
A biomimetic approach for modeling cloud shading with dynamic behavior Renewable Energy (2016)
Clouds are a complex phenomenon which is the result of a strong interaction between multiple variables. Modeling its behavior through physical principles is a task that requires time and is computationally demanding. One of the ...
Maximum power from fluid flow by applying the first and second law of thermodynamics Journal of Energy Resources Technology (2016)
The application of equilibrium thermodynamics in the study of thermal plant performance under real operating conditions is a constant challenge. In this paper, an analysis of a reservoir pressure piston working between two linear flow ...
Measuring reliability of hybrid photovoltaic-wind energy systems: a new indicator Renewable Energy (2016)
The integration of renewable energy systems has increased in the last decades because of the need for new energy sources freely available and environmental friendly. In this sense, photovoltaic-wind hybrid energy systems are an attractive ...
Multi-objective thermodynamic optimisation of supercritical CO2 Brayton cycles integrated with solar central receivers International Journal of Sustainable Energy (2016)
In this paper, optimisation of the supercritical CO Brayton cycles integrated with a solar receiver, which provides heat input to the cycle, was performed. Four S-CO Brayton cycle configurations were analysed and optimum operating conditions ...
Response surface optimization of an ammonia-water combined power/cooling cycle based on exergetic analysis Journal of Energy Resources Technology (2016)
Finding optimal operating conditions of solar-based power and cooling systems is always a challenge. Performance of these systems is highly dependent on several important parameters, which not only influence the long-term efficiency but also its ...
Thermodynamic feasibility of alternative supercritical CO2 Brayton cycles integrated with an ejector Applied Energy (2016)
Supercritical CO2 Brayton cycle has emerged as an alternative power block for Concentrated Solar Thermal (CST) systems and nuclear plants. In order to optimise the thermal performance of the Supercritical CO2 Brayton cycles, a combination ...
An exergy analysis of recompression supercritical CO2 cycles with and without reheating Energy Procedia (2015)
Concentrated Solar Power using supercritical CO2 (S-CO2) recompression Brayton cycles offer advantages of similar and even higher overall thermal efficiencies compared to power cycles using superheated or supercritical steam. The high efficiency and compactness of ...
Continuous and semicontinuous reaction systems for high-solids enzymatic hydrolysis of lignocellulosics Brazilian Journal of Chemical Engineering (2015)
An attractive operation strategy for the enzymatic hydrolysis of lignocellulosics results from dividing the process into three stages with complementary goals: continuous enzyme adsorption at low-solids loading (5% w/w) with recycling of the liquid phase; ...
Effect of pressure drop and reheating on thermal and exergetic performance of supercritical carbon dioxide Brayton cycles integrated with a solar central receiver Journal of Solar Energy Engineering (2015)
Concentrated solar power using supercritical carbon dioxide (S-CO2) Brayton cycles offers advantages of similar or higher overall thermal efficiencies than conventional Rankine cycles using superheated or supercritical steam. The high efficiency and compactness of S-CO2, ...
Exergetic analysis of supercritical CO2 Brayton cycles integrated with solar central receivers Applied Energy (2015)
Concentrated Solar Power (CSP) is a promising alternative for generating renewable energy. One of the most prominent CSP technologies is the central receiver tower with heliostat field, which has received attention in the last decade ...
Experimental characterization of thermal hydraulic performance of louvered brazed plate fin heat exchangers Revista Facultad de Ingeniería Universidad de Antioquia (2015)
Louvered fins are commonly used in compact heat exchangers to increase the surface area, turbulence, and initiate new boundary layer growth required to improve the heat transfer performance without a significant increase in pressure drop ...
Auto-ignition control in turbocharged internal combustion engines operating with gaseous fuels Energy (2014)
Control strategies for auto-ignition control in turbocharged internal combustion engines operating with gaseous fuels are presented. Ambient temperature and ambient pressure are considered as the disturbing variables. A thermodynamic model for predicting temperature at the ...
Automatic control strategies for hybrid solar-fossil fuel power plants Renewable Energy (2014)
Solar electrical generating systems are a class of solar energy systems which use parabolic trough collectors (PTC) to produce electricity from sunlight. In order to provide power production, one of the major challenges is to ...
Exergy analysis of an industrial sulphuric acid plant International Journal of Emerging Technology and Advanced Engineering (2014)
This paper presents an exergy analysis of an industrial 45 Ton/day sulphuric acid plant. Magnitude and location of irreversibilities for the main equipment of the process have been quantified. Gross irreversibilities represent 78.4% and exergy ...
Exergy analysis of parabolic trough solar receiver Applied Thermal Engineering (2014)
This paper presents an exergy analysis to study the effects of operational and environmental parameters on the performance of Parabolic Trough Collectors. The exergy analysis is based on a previous heat transfer model published by ...
Simulation and optimization of a parabolic trough solar power plant in the city of Barranquilla by using System Advisor Model (SAM) Energy Procedia (2014)
Solar energy is one of the most mature technologies to produce electricity from renewable energy. This papers analyses the solar radiation potential in the city of Barranquilla (Colombia), located at 10°59’16” north and 74°47’20” west, ...
Exergy analysis of a combined power and cooling cycle Applied Thermal Engineering (2013)
This paper presents a comprehensive exergy analysis of a combined power and cooling cycle which combines a Rankine and absorption refrigeration cycle by using ammonia–water mixture as working fluid. A thermodynamic model was developed in ...