Submerged PV Solar Panel for Swimming Pools: SP3

Abstract The possibility to use photovoltaic (PV) modules submerged in water or simply covered by a water veil suggest the possibility to use this renewable energy source (RES) integrated with swimming pools or with decorative pools and fountains. SP3 solution (Submerged PV Solar Panel for Swimming Pools) is discussed for underflow pools as well as for pools with skimmer. The extension of this concept to the possibility to store solar radiation for heating the water of the pool is explored using the results of experimentation already done for hybrid photovoltaic/thermal (PV/T) modules. Simulation results for Mediterranean latitudes are discussed

RAST: RoundAbout Solar Tracking

Abstract Roundabouts became popular worldwide as a tool to reduce the number of car accidents and the EU encourages and promotes this technology as a solution to the problems of urban and extra-urban traffic. RAST (Roundabout Solar Tracking) systems are designed to exploit the available space in roundabouts, which are already equipped and monitored, in order to produce electricity with a photovoltaic single axis tracking system. The energy produced can be used directly by the surrounding facilities or stored and consumed later or channelled to nearby car charge points. The amount of energy that can be produced on a single roundabout is limited by the land size and is normally in the range 100-400 kWp, but the number of suitable roundabouts in cities is high. Therefore, RAST could make an important contribution to the energy production

Axial and Vector Correlator Mixing in Hot and Dense Hadronic Matter

We study the manifestations of chiral symmetry restoration which have a significance for the parity mixing. Restricting to pions and nucleons we establish a formalism for the expression of the vector correlator, which displays the mixing of the axial correlator into the vector one and unifies the cases of the heat bath and the dense medium. We give examples of mixing cross-sections. We also establish a link between the energy integrated mixing cross-sections and the pion scalar density which governs the quenching factors of coupling constants, such as the pion decay one, as well as the quark condensate evolution.Comment: 12 pages, Latex, 4 PostScript Figure

supplying historic buildings with energy without impinging on their historic and cultural values

Abstract The Venetian Villas are an historic body of 3782 buildings in Veneto and Friuli from the XVI century to the XVIII century. UNESCO has certified 24 villas of Andrea Palladio as World Heritage Sites. The Regional Institute for the protection of these sites has launched a competition to find innovative technological solutions that contribute to the energy needs of the villas without interfering with the architectural and landscape quality of the same. The paper illustrates the technological solution that won the competition. The possibility of powering the historical Venetian Villas with renewable energy sources is explored. The realization of submerged PV plants integrated with existing water basin is suggested as the best solution. Energy yield is adequate and landscape quality is conserved. Technical details and architectural layouts are discussed

Isotope effect in total muon capture rates on nuclei and isotensor effective potential

Isotope effects are considered in the framework of the energy-weighted sum rule treatment of muon capture on nuclei. The possibility of exploiting total capture rates to convey information on nuclear structure is pointed out