摘要:
System for manufacturing facets comprising a frame, a series of mirrors and multiple securing parts in which said parts are the key to the invention and are formed by a rod and a circular metal sheet provided with a series of small circular perforations, where the rod and the circular sheet are attached by electric arc welding or any other means that ensures an equivalent fixation and the purpose of which is to secure a curved mirror to the rear structure or frame of a heliostat, thereby forming the so-called facet.
摘要:
A light collection and concentration system includes a primary light concentrator, a light transport structure, and a light directing structure optically associated with the primary light concentrator. The system may include an optional secondary light concentrator. Each unit-system includes a plurality of the primary light concentrators and a respective plurality of the light directing structures, and only a single light transport structure. A photo-voltaic (PV) cell may advantageously be associated with each unit-system. Solar radiation is focused by the primary concentrators onto respective light directing structures incorporated in a low aspect ratio, sheet-type waveguide light transport structure. Each respective light directing structure intercepts the focused light and deflects it transversely to travel along the length of the light transport structure primarily via total internal reflection (TIR) towards an exit-end of the light transport structure, where it can be input to the PV cell. The optional secondary light concentrator may further concentrate the light out-coupled from the transport structure into the PV cell.
摘要:
A solar concentration plant which uses water/steam as a heat-carrying fluid, in any thermodynamic cycle or system for the exploitation of process heat, which is comprised of an evaporation subsystem, where saturated steam is produced under the conditions of pressure of the system, and a superheater subsystem through which the steam reaches the required conditions of pressure and temperature at the turbine inlet, and in which an attemperation system (10) may be incorporated, these being physically separated and interconnected by means of a drum (5) in which the separation of water and steam takes place, and in which a strategic control of the pointing of the field of heliostats (1) towards either of the subsystems (evaporator or superheater) may be carried out, with individual or group pointing of the heliostats, in such a way that they jointly control both the pressure within the drum (5) and the outlet temperature of the superheated steam (11).
摘要:
The invention relates to a photovoltaic solar tracker with a structure comprising a post (1) with foundations in the ground, configured to transmit the loads of the structure to the ground, an actuating mechanism and a plurality of solar collection elements. The solar tracker has a lower mass than those known in the state of the art, and better bears the forces given that it comprises at least a number of main beams (4, 6) between which are located a plurality of structural modules (7), in which the solar collection elements are accommodated, which are joined rigidly to one another and to a central longitudinal beam (4) and an external longitudinal beam (6) facing same. The solar tracker preferably also comprises an upper support structure that works with traction in order to reduce the deformations in the structure.
摘要:
Hybrid system of parametric solar thermal cylinder (14) and photovoltaic receiver (3), which comprises a thermal absorber receiver (2) through which a heat-carrier fluid circulates, and, additionally at least one spectral separation filter (4), situated between the photovoltaic receiver (3) and the thermal absorber receiver (2), which receives the light reflected from the primary mirror (1) of the parametric cylinder (14) and which permits the selective separation of the solar spectrum, directing a part thereof towards the photovoltaic receiver (3) and the remainder towards the thermal absorber receiver.
摘要:
Selective solar absorbent coating and manufacturing method, with solar absorption and low emissivity properties. The coating comprises a substrate (1) of metal, dielectric or ceramic material, at least one highly reflective metal layer (2) in mid-far infrared applied to the substrate itself which provides low emissivity properties, a multi-layer structure of alternating dielectric and metallic layers (3) of subnanometric thickness applied to the reflective metal layer and at least one dielectric layer (4) that acts as an anti-reflective layer for the solar spectrum. The coating is applicable as a selective absorbent coating in absorbent tubes for parabolic-trough solar collectors, in solar panels for hot water, heating or domestic cooling, both in the form of absorbent tubes and absorbent sheets, in capture systems in tower solar thermoelectric power plants, and in capture systems in Stirling disk systems.
摘要:
Device for connection between adjacent solar receiver tubes of the type which are at the end of the solar receiver tube (1) to be joined with another adjacent solar collector tube, comprising: - An expansion compensating element with at least two concentric bellows (7, 8) that are connected to each other and to a rigid ring (9) by means of a welded joint, which keeps them concentric in the expansion and compression process and joined to the glass tube (4) by the cover (12) and glass- metal transition element (21), - A connection flange (5) to connect the solar receiver tube (1) to the one adjacent thereto, the flange (5) being a round metal plate with a hole that houses the absorber tube (3), - Some through bolts (20) passing through the connection flange (5) to attach it with flange of the adjacent receiving tube (1).
摘要:
The invention relates to a sol-gel method for producing an anti-reflective coating from alcoxide-type precursors, that can subsequently be applied to glass or plastic substrates by spraying. The invention also relates to optical and thermoelectrical devices that have been coated with said anti-reflective material. This coating increases the transmittance of the transparent substrates over which it is applied, as a result of which it is useful to apply over high concentration solar modules (HCPV), for both primary lenses and secondary lenses, in conventional silicon or in CSP tubes.