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Siting and building-massing considerations for the urban integration of active solar energy systems
摘要： This paper aims to determine the optimum geometry of the building blocks in order to ensure the viable building integration of active solar energy systems in the urban fabric. Through literature review, similar research objectives are reported and analysed, whilst the building integration of active solar systems in urban areas is explored. The motivation for the proposed research emanates for a need for an analysis at the scale of urban blocks and of building massing configurations at the scale of a cluster of buildings rather than that of an individual building. These sets of physical characteristics are examined to arrive at simplified archetypes, while at the same time the habitation density is held constant. A set of twelve simplified building block configurations is created, whereby the geometrical parameters examined include the width of the streets separating the building blocks, the height of existing and proposed buildings and the massing configurations of the buildings that can be accommodated in the proposed building blocks. These parameters are manipulated to effect changes in collective building massing and siting decisions that result in the optimal integration of active solar energy systems that may be integrated on a building cluster's facades and roofs. Subsequently, the energy production potential of the buildings' integrated systems was calculated for each case so that the twelve simplified massing and siting configurations could be compared and contrasted, so as provide architectural designers as well as planning authorities a way of quantifying solar planning decisions at the neighbourhood scale.
关键词： Solar planning,Building integration,Sustainable development,Building massing,Urban design,Building insolation
更新于2025-09-23 15:22:29
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Insertion of Photovoltaic Solar Systems in Technological Education Institutions in Brazil: Teacher Perceptions Concerning Contributions towards Sustainable Development
摘要： Teaching spaces are seen as institutions presenting relevant power to promote sustainability. Thus, in addition to knowledge (re)producers, they must also assume ethical obligations to incorporate daily sustainability-oriented actions. In this context, this study evaluates faculty perceptions regarding contributions to the teaching–learning process and the di?usion of a pedagogical practice adhering to sustainability assumptions, arising from the insertion of photovoltaic solar systems in educational institutions. A study was conducted at the Rio Grande do Norte Federal Institute of Education Science and Technology, with 2.2 photovoltaic MWp distributed throughout its 21 campuses. This study investigated teacher knowledge and attitudes towards renewable energy sources in their school practice, as a way of understanding these issues and presenting propositions that will strengthen their role in daily school life. Teachers are aware of the importance of these sources, but their knowledge does not form links with their practice. Thus, the necessary connections to promote sustainability from the existence of institutional photovoltaic systems were proven insu?cient. They did not support the concept, nor the adoption of pedagogical practices linked to this technology. In addition, teacher inability to bring knowledge related to renewable energies to the classroom and link them to daily student lives was also noted. The adoption of renewable energy to promote a sustainability culture demands the formation of teacher knowledge and attitudes, and this training must follow a continuous path.
关键词： sustainability,photovoltaic,teaching–learning,renewable energy,sustainable development,education,school,teachers
更新于2025-09-19 17:13:59
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An Eco-Friendly Disposable Plasmonic Sensor Based on Bacterial Cellulose and Gold
摘要： In several application fields, plasmonic sensor platforms combined with bio-receptors are intensively used to obtain biosensors. Most of these commercial devices are based on a disposable chip. Usually a gold chip, functionalized with a specific bio-receptor, inside a costly sensor system, is used. In this work, we propose a low-cost and small-size sensor system, used for monitoring a disposable plasmonic chip, based on an innovative optical waveguide made of bacterial cellulose (BC). In particular, we have sputtered gold on the green slab waveguide that is able to excite localized surface plasmon resonance (LSPR). Experimental results are presented on the capabilities of using the BC-based composite as an eco-friendly plasmonic sensor platform, which could be exploited for realizing disposable biosensors. The sensor has been used with optical fibers and simple equipment. More specifically, the fibers connect the green disposable LSPR sensor with a light source and with a spectrometer. The novel plasmonic sensing approach has been tested using two different optical waveguide configurations of BC, with and without ions inside BC.
关键词： bacterial cellulose,localized surface plasmon resonance,eco-friendly disposable sensors,optical sensors,sustainable development
更新于2025-09-16 10:30:52
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A Green Slab Waveguide for Plasmonic Sensors Based on Bacterial Cellulose
摘要： We use as optical waveguide a green composite, based on bacterial cellulose (BC). More specifically, we have sputtered a thin gold film on this innovative slab waveguide for obtaining a Localized Surface Plasmon Resonance (LSPR) sensor. Experimental results confirm the possibility of using the BC based composite as an environmental friendly optical sensor platform with plasmonic capabilities, which could be exploited for realizing disposable biosensors. The new optical sensor has been used by combining it with optical fibers. The fibers connect the green disposable optical sensor with a light source and with a spectrometer. The device has been tested by measuring the refractive index of different water-glycerin solutions.
关键词： refractive index measurement,sustainable development,localized surface plasmon resonance,bacterial cellulose,optical sensors
更新于2025-09-12 10:27:22
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Scalable Solar dc Micrigrids: On the Path to Revolutionizing the Electrification Architecture of Developing Communities
摘要： There is a worldwide focus on the electrification of developing regions, as is evident from the sustainable development goals (SDGs) of the United Nations. In particular, the aim of SDG 7 is to ensure universal access to affordable, reliable, sustainable, and modern energy services for all by 2030. Because of these sustained efforts, more than 1 billion people worldwide have gained access to electricity since 2000. During this course, the electrification architecture of developing regions has taken different forms, ranging from extensive utility grid extensions to limited off-grid solutions. Off-grid solutions generally offer cost-effective and lower up-front cost alternatives in comparison to utility grid extensions and are deemed more suitable for developing economies. In developing economies, these off-grid electrification solutions have evolved from individual solar home-based systems to community-based microgrids in pursuit of achieving higher efficiency and reliability on a village scale. Community grids responsible for the electrification of developing regions are further categorized based on architecture, type of generation, and mode distribution.
关键词： sustainable development goals,electrification,rural electrification,solar PV,developing regions,dc microgrids
更新于2025-09-09 09:28:46