Hybrid renewable energy systems (HRES) are a trendy alternative to enhance the renewable energy deployment worldwide. They effectively take advantage of scalability and flexibility of these energy sources, since combining two or more allows counteracting the weaknesses of a stochastic renewable energy source with the strengths of another or with the predictability of a non-renewable energy source. This work presents an optimization methodology for minimum life cycle cost of a HRES based on solar photovoltaic, wind and biomass power. Biomass power seeks to take advantage of locally available forest wood biomass in the form of wood chips to provide energy in periods when the PV and wind power generated are not enough to match the existing demand. The results show that a HRES combining the selected three sources of renewable energy could be installed in a rural township of about 1300 dwellings with an up-front investment of US $7.4 million, with a total life cycle cost of slightly more than US $30 million. Such a system would have benefits in terms of energy autonomy and environment quality improvement, as well as in term of job opportunity creation.
OPEN ACCESSSustainability 2015, 7 12788
En este escrito se pretende recuperar, para la historia política de la filosofía española, la polémica desatada, en los al- bores de 1968, entre Manuel Sacristán y Gustavo Bueno. A partir de esta línea histórica se proponen al final algunas reflexiones sugerentes sobre la actualidad de la polémica.
La interrupción como elemento de transformación ha tenido distintos efectos a lo largo del tiempo. En la actualidad la interrupción de mayo del 68 no es solamente la más cercana en el tiempo, sino que es aquella que mejor revela sus efectos en el presente actual. La individualización que representó continúa siendo el elemento configurador del motor de institucionalización que las sociedades occidentales viven. De ahí que concepciones como la democracia emergente e institucional puedan ser revividas en la actualidad a partir de fenómenos como los indignados, las primaveras árabes, o los más recientes como los acontecido en Cataluña en 2017 y los actuales procesos en Colombia y Chile.
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