RESUMO: Este documento descreve a metodologia utilizada para a implementação da ferramenta LNEG-LCOH versão 01.2024, a descrição dos módulos, incluindo exemplos de uso e valores de referência. O objetivo da LNEG-LCOH - Calculadora do Custo Nivelado do Hidrogénio (ferramenta LNEG-LCOH) é fornecer um serviço gratuito para a estimativa rápida dos custos em diferentes componentes da cadeia de valor do hidrogénio. A...
ABSTRACT: This document describes the methodology used for the implementation of the LNEG-LCOH tool version 01.2024, the description of the modules, including examples of use and reference values. The purpose of the LNEG-LCOH - Levelised Cost of Hydrogen Calculator (LNEG-LCOH Tool) is to provide a free service for the quick estimation of costs over different components of the hydrogen’s value chain. The tool is...
ABSTRACT: This work presents a numerical investigation of a novel control system for a new hybrid wave-wind energy floating platform. It comprises the design of a control system for controlling the variable pneumatic chamber volumes coupled with the hydrodynamics of the floating platform to maximise wave power production. The numerical model is developed in the object-oriented non-casual language Modelica, for ...
ABSTRACT: his work presents an integrated numerical modelling approach implemented in Modelica language, which combines a multipurpose wave energy floating platform made of multiple oscillating water columns and the production and storage of green hydrogen in the same platform. The modelling approach comprised the simulation of the platform in WAMIT from which the hydrodynamic coefficients were obtained that se...
ABSTRACT: The work presents the process of model design and testing and the experimental results for the OctaPlat, a new wave energy floating platform, conceived at IST/ULisboa. A physical model was designed on the basis of the Octaplat concept, which comprises five oscillating water columns (OWCs). The physical model design considered only three of the five OWCs due to infrastructure constraints and was made o...
ABSTRACT: Portugal has a vast coastal area and significant offshore wind resources. The country has set ambitious targets and designated specific areas for offshore wind development. Current national policies are actively encouraging investment in these projects. This report compiles the latest strategies for offshore wind and green hydrogen in Portugal. It introduces the Power-to-X (P2X) concept, explores pote...
ABSTRACT: This work focuses on the techno-economic analysis of a novel floating offshore hybrid wind-wave platform. Floating multi-purpose platforms can potentially reduce costs associated with floating offshore wind. This work is based on the OctaPlat, a barge-type hybrid wind-wave floating platform designed at Instituto Superior Técnico, University of Lisbon. The paper presents the concept and numerical model...
RESUMO: O Hidrogénio (H2) Verde perspetiva-se como um vetor energético indispensável para alcançar a neutralidade carbónica em 2050, porém a economia deste vetor está em desenvolvimento e os agentes económicos precisam de fontes de informação confiáveis e ajustadas ao contexto nacional e Europeu. Neste sentido, o LNEG desenvolve investigação em vários domínios relacionados com o H2 verde, desde o estudo e desen...
ABSTRACT: Among the different applications in which hydrogen technology has become the protagonist, the transport sector should be particularly mentioned. It is expected that, by 2030, 1 in 12 cars sold in Germany, Japan, California, and South Korea will be powered by hydrogen, and that more than 350,000 hydrogen trucks will be able to transport large quantities of goods, while thousands of trains and ships can...
RESUMO: O Hidrogénio (H2) Verde perspetiva-se como um vetor energético indispensável para alcançar a neutralidade carbónica em 2050, porém a economia deste vetor está em desenvolvimento e os agentes económicos precisam de fontes de informação confiáveis e ajustadas ao contexto nacional e Europeu. Neste sentido, o LNEG desenvolve investigação em vários domínios relacionados com o H2 verde, desde o estudo e desen...