Hydrogen generation through electrolyzers has gained a growing interest from researchers and industries to decarbonize transportation and electricity production. The performance of electrolyzers is strongly dependent on their operating conditions, such as the supply current, temperature, and pressure. To meet near-zero emissions, the electrolyzer must be supplied by low-carbon energy sources. Therefore, renewable energy sources must be considered. However, these sources are strongly linked with the weather conditions, so they have a high dynamic behavior. Therefore, this article is focused on the investigation of the effects of these dynamic solicitations on the electrical and thermal performance of electrolyzers. In this study, a proton exchange membrane (PEM) has been chosen to carry out this investigation. Experimental tests have been performed, emphasizing the relationship between the electrical and thermal performance of the PEM electrolyzer. The purpose of this work is to provide an optimal scenario of the operation of the electrolyzer under dynamic solicitations and consequently, to decrease the degradation of the electrolyzer.

Every year the Indian government is involved in the construction of nearly two million new buildings excluding the tertiary sector. These homes are not only intended primarily to house Indian populations, but the authorities concerned have also placed emphasis on sustainable development, since as all over the world the residential sector is the one that consumes the most energy. Indeed, active and passive strategies to reduce the energy consumption of dwellings have been established and even applied. Among the passive strategies, the global shape of the building, initially specific to modular architecture impacts the aesthetic part of the building but also its energetic bills. The concept of modular architecture is mainly the assembly of identical cells and, in different ways, the overall energy consumption depends on the initial assembly of the cells and therefore on the resulting shape of this assembly. The purpose of this article is to determine the impact of the shape on the energy balance. For this study, the container is the archetype used, in fact the metal box being a standardized, economical and easily transformable product in living space. The complex system resulting from the assembly of several containers offers a new way of thinking about housing from an architectural, economic, aesthetic and energetic point of view. In this article, we will focus on studying the impact of the overall shape of container-type housing on annual energy bill, with the aim of optimizing energy efficiency and achieving an eco-container model that meets international eco-sustainability criteria. The results demonstrate the undeniable correlation between geometric and energy aspects, the latter being mainly related to the internal thermal comfort of the container housing cells.

A study is presented on the feasibility of an approach based on the combination of Phase Change Materials (PCM) with metal walls in container-type houses. This line of research finds its motivations in recent trends in the energy and building sectors about energy consumption reduction. Another important objective concerns possible improvements in the comfort provided by such houses during the summer period. The results obtained through numerical solution of the governing equations accounting for heat transfer and latent heat effects associated with the PCM show that the indoor temperature can be reduced with a varying degree of success depending on the considered conditions.

Today, the building sector represents 44% of the energy consumed in France, far ahead of transportation, which makes it one of the key areas in the fight against global warming and invite the community to the energy transition. The shape, now is just a factor that is considered only aesthetically and not for its energy impact. The objective consumption of the various surfaces of the living space plays a crucial role in encouraging the energy transition in the building and civil engineering sector. In addition, the shape of the building as a whole, as well as the interior design, and the distribution of spaces have a significant influence on energy efficiency [1]. Our contribution in this paper is to make a numerical analysis of the impact of a building conception on its energy bill, more precisely, the influence of the geometry resulting from the assembly of these containers as well as their layout, and their orientations. The container represents a unit that is part of a complex and multiple systems, which offers a new opportunity for architects to rethink their designs both in terms of aesthetics and impact on the skyline as well as in the use of innovative, environmentally friendly and sustainable materials. In this paper we will focus on a purely formal analysis first with TRNSYS, and then we will start with an elementary modelling meeting the criteria of sustainability (eco-container), in those to lead to a design that is economical and energy efficient.

Cost-competitive and clean green energy is crucial for the realisation of the industry, mobility, and household realms. The global goal is to minimise carbon footprints worldwide and transitioning to sustainable energy sources, such us green hydrogen. The Bosch company – the global supplier of technology and services committed to climate neutrality status in 2020. Indeed, with the support of the German Federal Ministry of Economic Affairs and Climate Action, KoNSTanZE project was funded. The project concerned green hydrogen, from generation to final end use in the Bosch Homburg plant, in Germany. Actually, green hydrogen is used concurrently in several critical applications in the factory. For instance, in the hardening shop, for the facture of high-quality metallic products. Furthermore, KoNSTanZE project has provisions that involve storage, the mobility and transport sector. Indeed, a mobile hydrogen refuelling station and hydrogen stationary refuelling station have also been included in this project. Moreover, the components of the project are continuously monitored. The resulted data are managed and stored in the so-called Bosch Energy Platform. This platform, guarantees the functionality of the refuelling stations, and its safety. This study involves detailed data analysis employed method, aiming to provide insights into the effectiveness and efficiency of green H2 production and utilisation, by examining various metrics and performance indicators.