Power production from renewable energy resources is increasing day by day. In the case of Spain, in 2009 it represented 26.9% of installed power and 20.1% of energy production. Wind energy makes the most important contribution to this production. Wind generators are greatly affected by the restrictive operating rules of electricity markets because, as wind is naturally variable, wind generators may have serious difficulties in submitting accurate generation schedules on a day-ahead basis, and in complying with scheduled obligations. Weather forecast systems have errors in their predictions depending on wind speed. Therefore, if wind energy becomes an important actor in the energy production system, these fluctuations could compromise grid stability. In the previous paper in this brief series, [1] we showed technical results of the proposed solution, which consists of combining wind energy production with a biomass gasification system and a hydrogen generation system based on these two sources. In the present paper we show the economic results of the study, considering the most profitable technical configurations and three possible economic scenarios.
ElsevierSánchez Díaz, C.; Abad, B.; Hübner, S.; Alfonso-Solar, D.; Segura Heras, I. (2011). Wind park reliable energy production based on a hydrogen compensation system. AbstractPower production from renewable energy resources is increasing day by day. In the case of Spain, in 2009, it represents the 26.9% of installed power and 20.1% of energy production. Wind energy has the most important contribution of this production. Wind generators are greatly affected by the restrictive operating rules of electricity markets because, as wind is naturally variable, wind generators may have serious difficulties on submitting accurate generation schedules on a day ahead basis, and on complying with scheduled obligations. Weather forecast systems have errors in their predictions depending on wind speed. Thus, if wind energy becomes an important actor in the energy production system, these fluctuations could compromise grid stability. In this study technical and economical viability of a large scale compensation system based on hydrogen is investigated, combining wind energy production with a biomass gasification system. Combination of two systems has synergies that improve final results. In the economical study, it is considered that all hydrogen production that is not used to compensate wind energy could be sold to supply the transportation sector.
With the aim of facilitating sustainability assessment through Life Cycle Assessment, the Eduardo Torroja Institute of Construction Sciences. CSIC is developing a public database of environmental information: OpenDAP. One of the objectives of this database is to be compatible with other European databases but to be fully open, public and free of charge. With the participation in the project “Wood for Sustainable Construction Task Force”, whose coordinator was the University of Cordoba, 10 EPDs have been developed for different wood products and species, with a detailed study of each stage, using a spreadsheet and field studies for data collection.In this article we aim to demonstrate the need for environmental quantification of services and products in the construction sector, due to the importance of the global impact of this sector. With common procedures that allow us to obtain comparable and useful results for the final client who selects them. Both for generic and specific products, being stable and exportable. Allowing us to compare, reduce and improve our sustainability.
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