Nearly all energy conversion systems, and especially electricity generation plants do not operate at nominal conditions throughout their useful life: periodic or semi-periodic changes in the availability of the resource affect solar (thermal and PV), wind, hydraulic and geothermal plants, which in reality operate at off-design conditions for most of their life. To a smaller scale, fossil-fuelle...

This work analyses the two most diffused technologies for biogas upgrading, namely water scrubbing and membrane separation. In order to carry out such analysis, these are coupled with photovoltaic panels an electric energy storage system. The optimal renewable plant achieves a primary saving of 5.22 GWh/year operating cost 488 k€/year, resulting in best plant. It was compared reference system b...

This study evaluates the viability of an industrial salinity gradient solar pond during two operating seasons (2014 and 2015). The Granada was built to supply low-temperature heat (up 60 °C) satisfy temperature requirements flotation unit in a mineral processing plant (Solvay Minerales (Spain)). Energy analysis indicates that non-convective zone (NCZ) upper convective (UCZ) have low efficiencie...