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The production of municipal waste is increasing all over the world. Although a significant part of the waste is collected as commingled waste, much of it is recyclable if disposed of properly. Thus, separate deposition and collection plays an extremely important role today, more than ever, not only in terms of preventing pollution but also from the point of view of recycling as a driver of circular economy and of efficient use of resources. This work is focused on the development of compaction equipment to be applied to containers, which allows a more efficient approach to the process of collecting waste for recycling. As a management option, recycling depends on collective behavior which is based on individual acts. Therefore, individual use of plastic/metal compaction systems can help meet recycling targets, even as a complement to conventional bins. Thus, herein a proposal is presented for a plastic/metal collection station with a built-in compaction element that allows for the compacting of the separated waste, individually, in an easily accessible drawer. Sorting and compacting waste before collection will result in a reduction of the number of collection/transport stops, which will also translate into higher energy efficiency, cost savings, optimization of the transported tons/km ratio, and profitability., This work was financially supported by Base Funding–UIDB/50022/2020 (LAETA) of INEGI–Institute of Science and Innovation in Mechanical and Industrial Engineering, Portugal, and UIDB/04730/2020 of CIETI–Center for Innovation in Industrial Engineering and Technology, LA/P/0045/2020 (ALiCE), UIDB/00511/2020 and UIDP/00511/2020 (LEPABE), funded by national funds through the FCT/MCTES (PIDDAC), Portugal.

Energy challenges are crucial issues to achieve Sustainable Development and its goals. Energy availability and affordability are pillars for ending poverty, giving access to commodities as well as water, etc. Modern lives rely on appliances and gadgets based on electric energy being its price a key issue making it worth to analyze and promote simple models able to predict electric energy prices to support in decision-making processes and in management. This work studied the correlation of electricity price with variables such as the electricity mix, GDP (gross domestic product), energy productivity, electricity consumption per capita, fossil fuel reserves, and diesel price, using Spearman correlation. To the significant correlations found it was then applied the Kruskal–Wallis test and the variables that presented statistically significant differences were then considered to model electricity price based on these macro variables. Our findings revealed that the best models were a logarithmic and a linear model of energy productivity to predict electricity price, which is fundamental to achieve Sustainable Development Goals (SDG), specifically SDG7. In the validation process, these models presented an average deviation of 10.3% and 11.7%, respectively, which is reasonable considering the simplicity of the models developed., This work was financially supported by Base Funding – UIDB/04730/2020 of Center for Innovation in Engineering and Industrial Technology, CIETI – funded by national funds through the FCT/MCTES (PIDDAC), Portugal.

Rural farms are typically energy-intensive facilities with relatively low energy efficiency. In this sector, the introduction of renewable energies and integrated resource management technologies has been slower than in the domestic and industrial sector. The introduction of renewable energy sources was an mportant step in the past, but they are currently insufficient, as they do not allow for adequate energy management. The development of new solutions with integrated energy control is especially attractive for these installations as they present the least limitations in terms of space and adaptation to new technologies. This work describes a solution that was developed and implemented in a farm located in central Portugal. The results show that 83.2% reduction in energy from the grid can be achieved, with 5527 kg CO2 savings, and the return on investment (of C 32,434) is about 8 years. However, this period can be shortened if evolutionary options are taken, such as upgrading to electric driven agricultural equipment, This work was financially supported by Base Funding – UIDB/04730/2020 of Center for Innovation in Engineering and Industrial Technology, Portugal, CIETI – funded by national funds through the FCT/MCTES (PIDDAC), Portugal; LA/P/0045/2020 (ALiCE) and UIDB/00511/2020 - UIDP/00511/2020 (LEPABE) funded by national funds through FCT/MCTES (PIDDAC).

The reliability of the electrical grid depends on the availability and performance of crucial components such as power transformers. A failure in these expensive devices threatens supply energy warranty and system overhaul reliability. As transformers approach their end of life, the failure rate tends to increase and, therefore, both equipment diagnostics and working condition assessment are important to detect oncoming faults. In this work, we develop a state assessment methodology, able to evaluate power transformers health conditions. The study is about the transformer operation analysis and the associated status index calculation. This index value classifies the transformer general operation, according to the information of five partial indexes, reflecting the work conditions of most critical equipment: insulating oil and paper, winding and bushings. This contribution also presents an extensive transformer state analysis, backed up by in-service equipment., Neutro �� Terra, N.�� 22 (2018): Revista T��cnico-Cient��fica (Segundo Semestre)

This paper presents a Cyber Physical System (CPS) laboratory based on Open Design, called Open Science Laboratory for Manufacturing (OSLab4Man), with educational and research purpose and the potential contribute and (direct and indirect) effects regarding the 17 Sustainable Development Goals (SDGs). A short introduction describing the 17 SDG, the education for sustainability role, and the relevance of the framed CPS. A literature review of CPS laboratories that are addressed to sustainability is presented. The OSLab4Man is describe in the educational purpose lens. Then, the contribute of the OSLab4Man as an education tool for sustainability regarding the 17 SDGs is reflected. Finally, the conclusions of this work and future works are highlighted., This work was financially supported by (1) National Funds through the Portuguese funding agency, FCT - Fundação para a Ciência e a Tecnologia, within project UIDB/50014/2020, by (2) the Memória Plural – Associação to purchase components for the presented labo- ratory and the authors acknowledge the Department of Mechanical Engineering of the School of Engineering, Polytechnic of Porto, for providing 3D printers to produce parts of the manufacturing equip- ment of the laboratory, and (3) Base Funding – UIDB/04730/2020 of Center for Innovation in Engineering and Industrial Technol- ogy, CIETI – funded by national funds through the FCT/MCTES (PIDDAC).

Sustainable Development (SD) is an increasingly important topic. Humanity has an absolutely vital dependence on a set of natural and artificial resources. The advancement of knowledge needed to adequately manage these resources has traditionally been achieved through specialization. In this strategy of dividing and ruling, what was gained in depth was lost in coverage. Yet, the most recent problems are intensely interdisciplinary, revealing that the previous specialization strategy is currently not wrong, but clearly insufficient. Strangely (or not), various courses in higher education continued to follow the traditional specialization strategy. As a result of this state-of-affairs, several conferences currently exist, both in the field of Education or in the field of Sustainability, but it has been particularly difficult to attract participants to deepen the theme of Teaching Sustainability. As an attempt to contribute to clarifying the needs of the present and future, this TEEM’21 track presents itself as a space for presenting results and debating works and strategies that involve both domains: Teaching and Sustainability., This work was financially supported by Base Funding – UIDB/04730/2020 of Center for Innovation in Engineering and In- dustrial Technology, CIETI – funded by national funds through the FCT/MCTES (PIDDAC)