.................................................................................................. iii Tiivistelmä ............................................................................................... v Preface ...................................................................................................... i List of abbreviations ....................................................

HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L’archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau...

Natural gas produced at high pressure (50-70 bar) is the only industrial source of helium (He). A membrane separation process may offer a more efficient production system with smaller footprint and lower operational cost than conventional cryogenic system. Inorganic membranes with high mechanical strength are known to exhibit good stability at high pressure. In this work, two inorganic membrane...

World today is characterized by rapid transformations in all aspects of human’s life where innovation, technological change and technological progress play the most significant role. Therefore, technologyintensive organizations by engaging in strategic alliances, clusters and networks tend to extract maximum benefits i.e. to enable entry into the international markets and to develop core compet...

Munksøgård is a housing community near the city of Roskilde, Denmark. In 2014, Munksøgård's residents have agreed to change the existing heat supply system. The choice of future heat supply was narrowed to heat pumps, new biomass boiler and connection to nearby district heating network. The present paper compares results from techno-economic energy system analysis, simple private-economic analy...

Abstract Remote areas of Nepal suffer from limited or no access to electricity. Providing electricity in remote is one the foremost challenges any developing country. The purpose this study develop and propose a reliable low-cost model for electrification. presents an optimized choice between decentralized renewable-energy systems grid expansion. Opting analytical method modelling analysis elec...