A5049569341- Adsorption and Cooling Systems
- Chemical Looping and Thermochemical Processes
- Thermodynamic and Exergetic Analyses of Power and Cooling Systems
- Astrophysics and Cosmic Phenomena
- Solar Thermal and Photovoltaic Systems
- Dark Matter and Cosmic Phenomena
- Carbon Dioxide Capture Technologies
- Radio Astronomy Observations and Technology
- Neutrino Physics Research
- Biodiesel Production and Applications
- Oil, Gas, and Environmental Issues
- Gas Dynamics and Kinetic Theory
- Heat Transfer and Optimization
- Nuclear reactor physics and engineering
- Wind Turbine Control Systems
- Advanced Thermodynamics and Statistical Mechanics
- Moringa oleifera research and applications
- Power System Optimization and Stability
- Phase Change Materials Research
- Microgrid Control and Optimization
- Coffee research and impacts
- Combustion and flame dynamics
- Radiative Heat Transfer Studies
- Video Surveillance and Tracking Methods
- Radiation Detection and Scintillator Technologies
University of Lisbon
2007-2023
Instituto Politécnico de Lisboa
1998-2023
Institute for Systems Engineering and Computers
2022
Instituto de Novas Tecnologias
2022
LIP - Laboratory of Instrumentation and Experimental Particle Physics
2019
University of Coimbra
2018
Instituto Superior Técnico
1998-2007
The calcium-looping (CaL) process comprises an endothermic calcination reaction, where CaO and CO2 are generated from CaCO3, its reverse exothermic carbonation reaction. CaL is promising for thermochemical energy storage (TCES) in concentrating solar power plants. CaL-TCES includes: a calciner transformed into energy; carbonator the stored released; turbines electrical generation; tanks reaction products stored. In this work, simulated optimized using gPROMS Process. innovation lies...
The concept of a small, single-layer water Cherenkov detector, with three photomultiplier tubes (PMTs), placed at its bottom in $120^{\circ}$ star configuration (\emph{Mercedes} Water Detector) is presented. PMTs are near the lateral walls stations an adjustable inclination and may be installed inside or outside volume. To illustrate technical viability this obtain first-order estimation cost, engineering design was elaborated. sensitivity these to low energy Extensive Air Shower (EAS)...
The Calcium-looping process is a promising option for thermochemical energy storage in concentrating solar power plants. A crucial element of this the calcination reactor, where endothermic reaction CaCO3 occurs with formation CaO and CO2. that chemically stored products can be retrieved by exothermic carbonation when needed. In article, new computational model developed reactor process. takes place riser continuous circulating fluidized bed corresponds to an absorber tube exposed...
The detection of radioactive hot-spots and the identification radionuclides present have been a challenge for security sector, especially in situations involving chemical, biological, radiological, nuclear explosive threats, as well naturally occurring materials. This work proposes solution based on Machine Learning techniques, with focus artificial neural networks (NNs), order to localise, quantify identify sources. Firstly, created RHLnet model uses observations radiological intensity...
A new unidimensional computational model is developed to simulate a calcination reactor in Calcium-looping process for thermochemical energy storage concentrating solar power systems. The proposed an absorber tube exposed concentrated radiation. This also the riser of circulating fluidised bed where reaction takes place. heat transfer models are based on core-annulus and hydrodynamic modified version Kunii-Levenspiel model. considers change mass flow rate species density phases axial...
The monitoring of certain areas can be a tedious and non-interactive task that usually leads to some missed occurrences. With the development object-detection models, this problem mitigated reduced. In paper, rare application EfficientDet model analysis footage from an infrared camera in real-time is studied. will used detect deers, people cars images captured at surroundings classified facility where we do not yet have available. Consequently, show process creating discuss problems raised...
The production of expanded cork agglomerate involves significant heat demand, requiring superheated steam at temperatures ranging from 300°C to 370°C. energy required this process can be suitably provided by concentrating solar thermal collectors. This work considers the needs a real plant, presenting technical and economical analysis performed for industrial system using parabolic trough collectors preheat feedwater used boiler providing process.
Variable renewable energy sources (RES), wind and solar, are increasingly being used worldwide in the production of electricity. Its dissemination can substantially contribute to reducing ecological footprint minimizing external dependence importing countries. However, their increasing penetration into power systems has raised a number issues, linked characteristics both primary (variability dispatch ability) generators (less inertia available compared conventional synchronous generators)....
The detection of gravitational waves and neutrinos from astrophysical sources with gamma-ray counterparts officially started the era Multi-Messenger Astronomy. Their transient extreme nature implies that monitoring VHE sky is fundamental to investigate non-electromagnetic signals. However, limited effective area space-borne instruments prevents observations above a few hundred GeV, while small field view low duty cycle IACTs make them unsuited for extensive activities prompt response...
The development of new receivers for central receiver systems operating at high temperatures require the suitable tools able to accurately simulate heat and mass transfer processes. Such should be process complex geometries with nongray directionally nonideal surfaces. This work introduces a tool, HeatTracer, simulation radiative based on Monte Carlo method, directed study radiation exchange arbitrary user-defined cavity spectral and/or directional nonidealities. main characteristics this...
The detection of gravitational waves and neutrinos from astrophysical sources with gamma-ray counterparts officially started the era Multi-Messenger Astronomy. Their transient extreme nature implies that monitoring VHE sky is fundamental to investigate non-electromagnetic signals. However, limited effective area space-borne instruments prevents observations above a few hundred GeV, while small field view low duty cycle IACTs make them unsuited for extensive activities prompt response...