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The present work focuses on the effects of pressure on the quality of char and primary tar produced from fast pyrolysis of lignocellulosic biomass. Heat treatment has been carried out in a heated strip reactor (HSR) at 1573 K in nitrogen at 2, 4, 8 bar, with holding times of 3 s and heating rate of 104 K/s. The equipment allows quenching the volatiles as soon as they are emitted from the particles and collecting them for further chemical analyses. The char samples are also collected for thermogravimetric analysis in air. The DTG curves in air of char prepared at 2 bar shows two resolved peaks. Increasing the pressure of heat treatment from 2 to 4 bar has a minor effect on char reactivity, whereas further increase to 8 bar drastically changes the char combustion patterns, and the DTG curves exhibit only one well defined peak. For all the process conditions investigated, Oxo-aromatics are the dominant species in the tar. Benzendiol prevails in the 2 bar tar, followed by oxo-aromatic compounds related to lignin structure, while PAHs are mainly present as Fluorene. When pressure increases, Phenols compounds drastically prevail, and PAHs as Anthracene and Pyrene appear.

Geothermal energy has similar social acceptability issues as other renewable energy technologies. The territory of a geothermal project should be known in depth, understood and respected, including the public and its value, the energy issues and the entire socio-economic and political context as well. This knowledge can only be acquired with the tools provided by social sciences. It will be the key to build a project adapted to the territory, to communicate with and engage the public in a suitable way. Three tools helpful in fostering constructive interactions with the public have been examined: information sharing, creating local benefits, and public participation.

Energy dependence and an increasing concern with climate change are currently major challenges faced by European Union (EU) countries. Implementing Energy Efficiency (EE) measures and Renewable Energy Sources (RES) are privileged approaches to contribute to reduce both EU energy consumption and climate vulnerability while contributing to implement the Sustainable Development Goals 7 - Affordable and clean energy and 11 - Make cities and human settlements inclusive, safe, resilient and sustainable. However, the implementation of EE measures and RES options in Municipal Public Buildings (MPBs) is hampered not only by a general lack of financial resources, but also by an insufficient knowledge of public authorities on the buildings' features and consumption, as well as on the potentially most effective options to improve their energy performance. One of the challenges for making the public building sector more sustainable is to be able to develop solutions adapted to various regional contexts, level of urbanization of the area, availability of energy resources and types of buildings. Moreover, publics buildings with different usage, (i.e. swimming pools, health centres, sports centre, schools, office buildings) have associated different energy services (e.g. space heating and cooling, water heating, lighting, other electric equipment) and consumption profiles. Public authorities have to manage varied building stocks and thus need to enhance their institutional capacity in the field of EE and use of RES to contribute to the Energy Performance of Buildings and the Energy Efficiency EU Directives. The PrioritEE project, funded by the Interreg MED programme, aims at strengthening the capacities of public administrations in selecting and implementing efficient and cost-effective energy solutions in their public building stock. This work describes the Excel based Decision Support Tool (DST) under development for the ranking and selection of measures for improving EE and increasing RES adoption in MPBs. The tool is being co-developed, validated and tested by local public authorities and professional institutions from five country pilots with the aim of reducing energy consumption and prioritize EE investments. The pilots are located in regions with significant climatic differences: Potenza, Italy (HDD=1762); Leziria do Tejo, Portugal (HDD=893); Teruel, Spain (HDD=1725); West Macedonia, Greece (2508) and Karlovac, Croatia (2364); allowing to test the DST in different European contexts. A comprehensive set of key performance indicators is an integral part of the DST and will be used to compare different scenarios of interventions and monitor energy consumption, assessing the effects of the proposed strategies. The DST components, namely its main features (e.g. analytical database), building typologies and energy services addressed, as well as the results obtained to over 100 MPBs within the five pilot regions will be discussed as a ranking per investment (total, per user, per m2, payback period), and energy savings (total, per user, per m2), among others. Moreover, a focus on how results are being used by local public authorities will be presented, evaluating the DST transferability to other countries, cities and regions.

Efforts to realize thin-film solar cells on unconventional substrates face several obstacles in achieving good energy-conversion efficiency and integrating light-management into the solar cell design. In this report a technique to circumvent these obstacles is presented: transferability and an efficient light harvesting scheme are combined for thin-film silicon solar cells by the incorporation of a NaCl layer. Amorphous silicon solar cells in p-i-n configuration are fabricated on reusable glass substrates coated with an interlayer of NaCl. Subsequently, the solar cells are detached from the substrate by dissolution of the sacrificial NaCl layer in water and then transferred onto a plastic sheet, with a resultant post-transfer efficiency of 9%. The light-trapping effect of the surface nanotextures originating from the NaCl layer on the overlying solar cell is studied theoretically and experimentally. The enhanced light absorption in the solar cells on NaCl-coated substrates leads to significant improvement in the photocurrent and energy conversion efficiency in solar cells with both 350 and 100 nm thick absorber layers, compared to flatsubstrate solar cells. Efficient transferable thin-film solar cells hold a vast potential for widespread deployment of off-grid photovoltaics and cost reduction.