Mejoras en el sistema autónomo de generación de energía instalado en la Base Esperanza de la Antártida

Un sistema autónomo alimentado con una batería a combustible hidrógeno con tecnología propia estuvo funcionando en la Base Esperanza de la Antártida desde enero de 2007 hasta mayo de 2008, cuando volvió al continente para su reciclado. Describimos aquí la detección del origen de fallas, las mejoras introducidas y los resultados obtenidos en su funcionamiento nuevamente en la Base Esperanza a partir de octubre de 2008 hasta la fecha.An autonomous system powered by a hydrogen fuel cell stack was running at Base Esperanza (Antarctica) since January 2007 until May 2008, when it returned to the continent for recycling. It is described in this work the evidence of detection of failures and the improvements introduced to our own tecnology. Results obtained for de recycled stack once again at Base Esperanza are also shown (october 2008 to date).Asociación Argentina de Energías Renovables y Medio Ambiente (ASADES

Mejoras en el sistema autónomo de generación de energía instalado en la Base Esperanza de la Antártida

Un sistema autónomo alimentado con una batería a combustible hidrógeno con tecnología propia estuvo funcionando en la Base Esperanza de la Antártida desde enero de 2007 hasta mayo de 2008, cuando volvió al continente para su reciclado. Describimos aquí la detección del origen de fallas, las mejoras introducidas y los resultados obtenidos en su funcionamiento nuevamente en la Base Esperanza a partir de octubre de 2008 hasta la fecha.An autonomous system powered by a hydrogen fuel cell stack was running at Base Esperanza (Antarctica) since January 2007 until May 2008, when it returned to the continent for recycling. It is described in this work the evidence of detection of failures and the improvements introduced to our own tecnology. Results obtained for de recycled stack once again at Base Esperanza are also shown (october 2008 to date).Asociación Argentina de Energías Renovables y Medio Ambiente (ASADES

Estudio sistemático del comportamiento de electrodos de acero inoxidable 316L picados con HCl para su uso en electrolizadores bipolares alcalinos

Los electrolizadores alcalinos, combinados con formas limpias de energía primaria (eólica, solar), son una alternativa prometedora para la producción de hidrógeno. Son muchos los sistemas aerogeneradores-electrolizador y paneles fotovoltaicos-electrolizador que se han probado pero la ventaja adicional que presentan los panales solares es que suministran energía eléctrica directamente sin la necesidad de utilizar un conversor. Aunque la tecnología de electrolizadores es bien conocida, todavía deben superarse obstáculos: reducción de consumo energético, costo, mantenimiento, e incremento de eficiencia. Estudiamos en este trabajo el comportamiento de electrodos de acero inoxidable 316L luego de someterlos al tratamiento químico de picado con HCl 1 M. Los resultados preliminares indican que la aplicación del tratamiento al cátodo mejora parámetros como la densidad de corriente en 19% y disminuye la resistencia en 20% con respecto a los electrodos en estado original. En cambio, comparados con los resultados obtenidos cuando se trata solamente el ánodo o ambos electrodos, la mejora es menos significativa.Alkaline electrolysers are a potential alternative to produce hydrogen if they are combined with primary energy sources like wind or solar. There are many systems (wind turbine-electrolyser and photovoltaic generators-electrolyser) that have been proved but the photovoltaic generator has the additional advantage of suppling direct electrical power current to the electrolyser. Although the electrolysers represent a well known technology, the challenges to use them are to reduce energy consumption, cost, and maintenance and increase their performance. In this work, we study the behavior of stainless steel 316L electrodes after applying a pickling treatment with hydrochloric acid 1 M. The preliminary results show that pickling on cathode increases 19% the performance in parameters such as current density and decreases 20% the resistance compared to the electrodes in their original state. Otherwise, if we compare these results with the ones we have obtained by pickling just the anode or both electrodes we find the performance is not lower.Asociación Argentina de Energías Renovables y Medio Ambiente (ASADES

Estudio sistemático del comportamiento de electrodos de acero inoxidable 316L picados con HCl para su uso en electrolizadores bipolares alcalinos

Los electrolizadores alcalinos, combinados con formas limpias de energía primaria (eólica, solar), son una alternativa prometedora para la producción de hidrógeno. Son muchos los sistemas aerogeneradores-electrolizador y paneles fotovoltaicos-electrolizador que se han probado pero la ventaja adicional que presentan los panales solares es que suministran energía eléctrica directamente sin la necesidad de utilizar un conversor. Aunque la tecnología de electrolizadores es bien conocida, todavía deben superarse obstáculos: reducción de consumo energético, costo, mantenimiento, e incremento de eficiencia. Estudiamos en este trabajo el comportamiento de electrodos de acero inoxidable 316L luego de someterlos al tratamiento químico de picado con HCl 1 M. Los resultados preliminares indican que la aplicación del tratamiento al cátodo mejora parámetros como la densidad de corriente en 19% y disminuye la resistencia en 20% con respecto a los electrodos en estado original. En cambio, comparados con los resultados obtenidos cuando se trata solamente el ánodo o ambos electrodos, la mejora es menos significativa.Alkaline electrolysers are a potential alternative to produce hydrogen if they are combined with primary energy sources like wind or solar. There are many systems (wind turbine-electrolyser and photovoltaic generators-electrolyser) that have been proved but the photovoltaic generator has the additional advantage of suppling direct electrical power current to the electrolyser. Although the electrolysers represent a well known technology, the challenges to use them are to reduce energy consumption, cost, and maintenance and increase their performance. In this work, we study the behavior of stainless steel 316L electrodes after applying a pickling treatment with hydrochloric acid 1 M. The preliminary results show that pickling on cathode increases 19% the performance in parameters such as current density and decreases 20% the resistance compared to the electrodes in their original state. Otherwise, if we compare these results with the ones we have obtained by pickling just the anode or both electrodes we find the performance is not lower.Asociación Argentina de Energías Renovables y Medio Ambiente (ASADES

Preface

Because of the travel restrictions between China and other countries of our keynote speaker, the 9th annual 2021 International Conference on Material Science and Environmental Engineering [MSEE2021] was held on November 27th, 2021 (Virtual Conference). The conference was held via Tencent Meeting Application. MSEE2021 aims to bring researchers, engineers, and students to the areas of Material Science and Environmental Engineering. MSEE2021 features unique mixed topics of Material Science and Advanced Materials, Material Engineering and Application, Environmental Science and Engineering and Mechanical Design and Technology. We received over 197 submissions from various parts of the world. The Technical Program Committee worked very hard to have all manuscripts reviewed before the review deadline. All the accepted papers have been submitted to strict peer-review, and selected based on originality, significance and clarity for the purpose of the conference. The conference program is extremely profound and featuring high-impact presentations of selected papers and additional late-breaking contributions. We sincerely hope that the conference would not only show the participants a broad overview of the latest research results on related fields, but also provide them with a significant platform for academic connection and exchange. There are two keynote speakers and four invited sessions. The keynote speakers are internationally recognized leading experts in their research fields, who have demonstrated outstanding proficiency and have achieved distinction in their profession. The proceedings would be published by IOP Journal of Physics Conference Series. We would like to express our sincere gratitude to all the members of Technical Program Committee and organizers for their enthusiasm, time, and expertise. Our deep thanks also go to many volunteers and staffs for the long hours and hard work they have generously given to MSEE2021. Last but not least, we would like to thank all the authors, speaker and participants for their great contributions to the success of MSEE2021. MSEE2021 Organizing Committee List of Committee of MSEE2021 are available in this pdf.</jats:p