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Most existing solar atlases cover a continent or a country with a spatial resolution coherent with such visualization. These atlases generally depict yearly sum of Global Horizontal Irradiation (GHI). Thus they give a good idea of the large scale solar trends, which are particularly suited for an application of identification of wide areas of high solar potential. However, these large scale atl...

Model-based control of the outlet temperature of a distributed solar collector eld is studied. An energy-based controller is derived using internal energy as a storage function and controlled variable. The controller relies on a distributed parameter nonlinear plant model and includes feedforward from the solar irradiation and inlet temperature. Stability of the closed loop is proved, and the m...

Introduction: The origin of short-lived nuclides in the solar nebula is a long standing controversial issue. There are two major explanations: injection from neighboring supernovae or AGB stars [1-3], or in situ irradiation of nebular dust and gas by solar energetic particles (SEP) [4-7]. The distribution of short-lived nuclides in the solar nebula is a key test of these models. Unlike

The solar radiation reaching the ground level on horizontal surfaces is of paramount importance in many applications, from climate to health (ESRA, 2000), and of course for the production of energy: heat, electricity. This communication deals with the amount of energy received during a day on a surface of 1 m2 located at ground surface and integrated over the whole spectrum of the solar radiati...

The Martian regolith is exposed to solar irradiation in the near-UV (200-390 nm). Basalt is one of the main components of the dust on Mars surface. The near-UV irradiation of basalt dust on Mars is simulated experimentally in order to determine the transmittance as a function of the mass and thickness of the dust. This data can serve to quantify the absorption of dust deposited on sensors aimin...

This paper proposes a novel concentrator photovoltaic (CPV) system with improved irradiation uniformity and system efficiency. CPV technology is very promising its for highly efficient solar energy conversion. A conventional CPV system usually uses only one optical component, such as a refractive Fresnel lens or a reflective parabolic dish, to collect and concentrate solar radiation on the sola...

A scheme is presented for an analog investigation of long term irradiation of ices and organics following the cyclic evolution of interstellar dust. The irradiation is proposed to be performed at cryogenic temperatures on a space platform, and with an enhancement of the solar ultraviolet flux using a concave mirror, grating combination which eliminates the visual and infrared from the sample su...

In the future, solar energy will be a very important energy source. Several studies suppose that more than 45% of the energy in the world will be generated by photovoltaic array. Therefore it is necessary to concentrate our forces to reduce the application costs and to increment their performance. In order to reach the last aspect, it is important to note that the output characteristic of a pho...

In this paper, a simulation study of the maximum power point tracking (MPPT) for a photovoltaic system using an artificial neural network is presented. Maximum power point tracking (MPPT) plays an important role in photovoltaic systems because it maximizes the power output from a PV solar system for all temperature and irradiation conditions, and therefore maximizes the power efficiency. Since ...