Concentrateur parabolique solaire pdf


 

Mentouri. M. C. A. CHAKER. Examinateurs. Constantine. Univ. Mentouri. M. C. A. MOKHNACHE. Etude et Réalisation d'un Concentrateur Solaire parabolique. communément la ceinture solaire indiquée sur la figure 7.1, la ressource en cylindro-paraboliques, la plus économique et la plus robuste actuellement. .. homologues plans non concentrateurs captent également le rayonnement diffus. PDF | On Mar 24, 2016, Landoulsi Hanene and others published Étude numérique thermique solaire combiné utilisant un concentrateur cylindro- parabolique.

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Concentrateur Parabolique Solaire Pdf

Request PDF on ResearchGate | On Nov 28, 2018, Ikhlef Khaoula and others par voie de centrale solaire thermodynamique (Cylindro-parabolique). de puissance à concentrateur solaire pour la production d'énergie. 1 2017 La structure de concentrateur solaire d'étude était conçue et installée conception de concentrateur solaire cylindro-parabolique depuis les. Le miroir cylindro-parabolique est une des variantes du collecteur solaire thermique. mais inférieur cependant à celui obtenu par un concentrateur parabolique Stirling. Créer un livre · Télécharger comme PDF · Version imprimable.

Ben Salah 2, F. Askri 3, M. Ben Nasrallah 4 and F. The experimental devise consists of a dish of 2. Its interior surface is covered with a reflecting layer, and equipped with a disc receiver in its focal position. The orientation of the parabola is ensured by two semi-automatic jacks. Experimental measurements of solar flux and temperature distribution on the receiver have been carried out. These experimental results describe correctly the awaited physical phenomena. Keywords: Solar energy - Dish - Receiver - Solar flux. Two forms of solar energy are distinguished, direct radiation and diffused radiation. Solar high temperature designs require concentration systems, such as parabolic reflectors. Solar thermal power plants with concentration technologies are important candidates for providing the bulk solar electricity needed within the next few decades. Four concentrating solar power technologies are developed: parabolic trough collectors PTC , linear Fresnel reflector systems LF , power towers or central receiver systems CRS and dish engine systems DE [1]. El Ouederni et al.

Ben Nasrallah 4 and F. The experimental devise consists of a dish of 2. Its interior surface is covered with a reflecting layer, and equipped with a disc receiver in its focal position. The orientation of the parabola is ensured by two semi-automatic jacks.

Experimental measurements of solar flux and temperature distribution on the receiver have been carried out. These experimental results describe correctly the awaited physical phenomena. Keywords: Solar energy - Dish - Receiver - Solar flux. Two forms of solar energy are distinguished, direct radiation and diffused radiation.

Solar high temperature designs require concentration systems, such as parabolic reflectors.

Solar thermal power plants with concentration technologies are important candidates for providing the bulk solar electricity needed within the next few decades. Four concentrating solar power technologies are developed: parabolic trough collectors PTC , linear Fresnel reflector systems LF , power towers or central receiver systems CRS and dish engine systems DE [1].

El Ouederni et al.

Experimental study of a parabolic solar concentrator

Many researches related to parabolic concentrators are found. Kleih [2] has been setting up a test facility for parabolic dish systems with power conversion unit in their focus, R. Nuwayhid et al. Draou et al. As an alternative application, David et al. The manufacture of these systems remains enough expensive seen the quality of materials, the dimensions and the preciseness. Some authors made researches with applications targeted to reduce cost [7, 8]. Quincy [9] has been shown that a focus point of solar concentrator can be made from two troughs collectors by orienting their longitudinal axes in perpendicular directions and separating them by the difference of their focal lengths along the optical axis.

Jaramillo et al. The concentrated flux has been determined by using several calorimeters of different geometries Shuai et al. In this work, a solar concentrator system has been constructed and tested by using two discs as receivers. The first experience consists to place a thick disc in the focal position in order to carry out the solar temperature distribution on the lighted face of the thick disc. In a second step, a thin disc was placed in the focal region in order to determinate solar flux concentrated and efficiency of our system.

Different compounds of this design are described. An acquisition data system is adapted to measure temperature profile over the receiver in the experiment conditions.

A theoretical and experimental study of the thermal transfers is realized for better conception of the solar energy installation. Experimental measurements in this stage describe correctly the awaited results. Several practical applications could so be allocated to this concentrator. Its interior surface is covered with a reflecting layer. Which reflect solar rays on the face of a receiver placed at the focal position of the concentrator.

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The concentrator is posed on a directional support according to two axes to ensure the follow-up of the sun. The characteristics of the solar concentrator are shown in Table 1.

The characteristics of receivers are shown in Table 2.

The concentrator is oriented in front of sun according to two freedom degrees. First jack ensure the follow up of the hour angle. The second one permits movement of the concentrator according to declination angle.

This command system permits us to obtain a circular shape of sunspot.

The present design is equipped by a moving support in order to have the possibility to place our system in the best site. To determine the space-time evolution of the disk temperature, seven thermocouples were installed in equidistant positions along its diameter.

A data acquisition system Fig. Solar flux and the ambient temperature are given by a weather station installed on the site.

The concentrating solar dish unit assembly according to any one of claims 5 to 16, wherein the reinforcing elements are diagonal reinforcement bars. The concentrating solar dish unit assembly according to claim 17, wherein the three rails are tracks adapted for riveting with said diagonal reinforcement bars.

The concentrating solar dish unit assembly according to anyone of claims 5 to 18, wherein the two edge rails allow radial positioning of the parabolic solar collector and its holding it in a predetermined position.

The concentrating solar dish unit assembly according to anyone of claims 5 to 19, wherein the two edge rails are riveted to the parabolic solar collector. The concentrating solar dish unit assembly according to anyone of claims 1 to 21, wherein said heat transfer collector is made of a highly thermally conductive structural material. The concentrating solar dish unit assembly according to anyone of claims 1 to 21, wherein said heat transfer collector is made of a highly thermally conductive structural material coated with a 24.

The concentrating solar dish unit assembly according to anyone of claims 1 to 21, wherein said heat transfer collector is made of a highly thermally conductive structural material coated with a an electrodeposited chrome material.

EP0347444A1 - Agencement concentrateur - Google Patents

The concentrating solar dish unit assembly according to claim 5, wherein the mechanical system allows the unitary rigid parabolic self-supporting mirror to rotate on an axis to allow optimization of the capture of light beams. The concentrating solar dish unit assembly according to anyone of claims 5 and 25, wherein the solar beam detection system detects solar beams, evaluates their intensity and directs the mechanical system into steering the assembly towards optimal solar collection and if appropriate steers the structure to the non-use position.

A solar assembly series comprising at least two concentrating solar dish unit assemblies as defined in anyone of claims 1 to 26, connected together. The solar assembly series according to claim 27, wherein the concentrating solar dish unit assemblies are connected, two by two, in series. Use of a concentrating solar dish unit assembly as defined in anyone of claims 1 to 26 or of a solar assembly series as defined in anyone of claims 27 and 28, for heating a heat transfer fluid.

Use of the concentrating solar dish unit assembly as defined in anyone of claims 1 to 26 or of a solar assembly series as defined in anyone of claims 27 and 28, for producing industrial steam. Process for manufacturing the concentrating solar dish unit assembly according to anyone of claims 1 to 26 or for manufacturing a solar assembly series as defined in anyone of claims 27 and 28, by using assembling methods such as welding, moulding, riveting, coating, bending, laminating, extruding, screwing and combination of at least two of the latter technologies.

Easily transportable kit constituted by: - a unitary rigid parabolic self-supporting solar collector system comprising at least one solar mirror, at least one heat transfer element being positioned above a concave part of said unitary self-supporting solar collector and to receive light reflected from said unitary self-supporting p solar collector, said heat transfer element being connected in a solider way to the said unitary - a structural rotational system configured for positioning the unitary self- supporting solar collector system in an optimised positioning relative to the positioning of solar beams; and - a beam detection system configured to analyse the specifications of the solar beams, such as the positioning, of the solar beams and to send optimised positioning parameters to said 33.

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