18 documents found, page 1 of 2
Detection of corrosion on silvered glass reflectors via image processing
Wiesinger, Florian; Baghouil, Sarah; Le Baron, Estelle; Collignon, Romain; Santos, Filipa; Cunha Diamantino, Teresa; Catarino, Isabel; Facão, JorgeABSTRACT: A novel characterization technique based on image analysis is presented, intended to complement state-of-the-art reflectometer measurements. The technique is developed by experts from different laboratories (OPAC, AGC, CEA and LNEG), which subsequently conduct two Round Robin experiments on corroded solar reflectors for validation. Regarding the inter-comparability, it is found that parameters like th...
Como o trabalho do LNEG apoia a concretização do PNEC: Plano Nacional de Energi...
Simoes, Sofia; Simões, Teresa; Barbosa, Juliana Pacheco; Rodrigues, Carlos; Azevedo, Pedro; Cardoso, João; Facão, Jorge; Costa, Paula Silva
Parameter identification and uncertainty evaluation in quasi-dynamic test of so...
Rodrigues, João Carlos Teixeira; Facão, Jorge; Carvalho, Maria JoãoABSTRACT: This work presents a comparison between two methods used for parameter identification and calculation of parameter uncertainty applied to the measured data of solar thermal collectors when tested according to ISO 9806:2017. One method is using a weighted least square (WLS) fit and the partial derivative approach described in the GUM (the Guide to the Expression of Uncertainty in Measurement). The seco...
Estimativa de potenciais técnicos de energia renovável em Portugal: eólico, sol...
Simoes, Sofia; Simões, Teresa; Barbosa, Juliana; Rodrigues, Carlos; Azevedo, Pedro; Cardoso, João P.; Facão, Jorge; Costa, Paula SilvaExecutive Summary: There is a clear need to accelerate the energy transition, including the implementation of renewable electricity production plants, as well as the increase in consumption of other renewable energy carriers in buildings, industry, transport and other sectors. This work provides key information to make this transition possible, that is, the technical renewable energy potentials for Portugal. Th...
Solar Resource and Energy Demand for Autonomous Solar Cooking Photovoltaic Syst...
Cardoso, João P.; Couto, António; Costa, Paula; Rodrigues, Carlos; Facão, Jorge; Loureiro, David; Wambugu, Anne; Banda, Sandra; Da Silva, IzaelABSTRACT: The challenges associated with traditional cooking methods in African countries, particularly the use of firewood and charcoal, which have negative impacts on the environment, health and human and economic development and safety, are addressed in this work. Given the high annual solar irradiation on the African continent, photovoltaic-powered electric cooking alternatives, such as electric pressure co...
The use of key enabling technologies in the nearly zero energy buildings monito...
Lourenço, José Marco; Aelenei, Laura Elena; Facão, Jorge; Goncalves, Helder; Aelenei, Daniel; Pina, João MurtaABSTRACT: The 2018 revision of the European Performance Building Directive (EPBD) requires that from the year 2020 onwards, all new buildings will have to be "nearly zero energy buildings". It also further promotes smart building technologies, raising awareness amongst building owners and occupants of the value behind building automation. The European Commission also identified, in 2011, Key Enabling Technologi...
Thermal behavior of a BIPV combined with water storage: an experimental analysis
Lourenço, José Marco; Aelenei, Laura Elena; Sousa, Miguel; Facão, Jorge; Goncalves, HelderABSTRACT: Buildings play an active role in the global energy consumption and are required to not only minimize their energy use, but also generate energy in a sustainable manner. The integration of renewable energies in building elements can improve their overall performance, as they are able to replace common construction materials, while offering both electrical and thermal energy. The scope of this paper is ...
Infraestrutura nacional de investigação na área de energia: NZEB_LAB - Integraç...
Aelenei, Laura Elena; Goncalves, Helder; Carvalho, Maria João; Facão, Jorge; Joyce, A; Cunha Diamantino, Teresa; Rodrigues, Carlos; Salema, DavidRESUMO: NZEB_LAB representa uma infraestrutura nacional de investigação na área da integração de sistemas de energia solar em edifícios, localizada nas instalações do Laboratório Nacional de Energia e Geologia coordenada pelo Laboratório Nacional de Energia e Geologia (LNEG) e localizada nas suas instalações do Lumiar, em Lisboa. A plataforma experimental do NZEB_LAB oferece condições únicas para desenvolver e ...
Aplicação das tecnologias facilitadoras essenciais (TFE) na gestão, controlo e ...
Lourenço, José Marco; Aelenei, Laura Elena; Facão, Jorge; Aelenei, Daniel; Pina, João MurtaRESUMO: A partir de 31 de dezembro de 2020, pretende-se que todos os edifícios novos na União Europeia sejam nZEB, edifícios com necessidades energéticas quase nulas. No edifício Solar XXI, em Lisboa, encontra-se uma sala laboratorial sob monitorização equipada com sistemas de controlo de temperatura. O objetivo deste estudo é validar uma simulação da sala em EnergyPlus com os dados obtidos experimentalmente e ...
Conversão de edifícios existentes em nzeb através da integração de energias ren...
Estanqueiro, Ana; Joyce, A; Aelenei, Laura Elena; Facão, Jorge; Rodrigues, Carlos; Loureiro, David; Teixeira, J.; Correia, J.B.; Ramalho, ÁlvaroRESUMO: O Projeto IMPROVEMENT “Integration of combined cooling, heating and power microgrids in zero-energy public buildings under high power quality and continuity of service requirements” é um projeto financiado pelo Programa INTERREG SUDOE, de cariz marcadamente multidisciplinar e que reúne competências da área de integração e modelação de sistemas energéticos, da gestão de energia em edifícios, de energias ...