摘要:
Method for actuating upon a hydraulic solar collector tracking system, said system (100) comprising at least one hydraulic cylinder (3, 5) to tilt a solar collector surface (2) of the hydraulic solar collector tracking system (100) with respect to at least one elevation axis (Y) to cause the solar collector tracking system (100) to go into a wind stow position. The pressure of at least one of the chambers of at least one hydraulic cylinder (3, 5) of the system (100) is measured, the actuation upon the hydraulic cylinder (3) in charge of causing the solar collector tracking system (100) to go into the wind stow position being regulated depending on said measured pressure, to cause the solar collector tracking system (100) to go into the wind stow position.
摘要:
The invention relates to a method for determining corrections for platforms of solar trackers, which can be used to compensate mainly for azimuth deviation and the inclination of the tracker. Depending on the embodiment of the invention, it may also be possible to perform an additional elevation correction. In multiple different embodiments, the invention includes a central processing unit that acts on driving means, providing commands that take account of the corrections calculated to generate set values appropriate for the driving means, thereby obtaining the correct orientation for the platform.
摘要:
Hybrid plant with a combined solar-gas cycle and operating method with two circuits, one air circuit and one steam circuit, the air circuit having a gas turbine with an intercooler with a natural gas supply, and the steam circuit having a steam turbine and storage systems. The steam circuit can have steam or salt solar receiver. Said plant can work more reliably by reducing the working temperature of the air in the receiver.
摘要:
The invention relates to a portable mixing platform for producing a heat-transfer fluid on site and on an industrial scale, said fluid consisting of a eutectic mixture of diphenyl (DP) and diphenyl oxide (DPO). The platform includes a device that stores DPO in liquid state, a device for supplying DP in solid state, a mixing device in which both components are mixed in liquid state and in the right amount for forming a eutectic mixture, and a device for inerting and treating gases which maintains the DPO and mixing devices under inert atmosphere, as well as drawing the gases vented from both devices to pass said gases through an activated-carbon filter prior to expelling same into the atmosphere. The present invention also relates to the method for producing the eutectic mixture of DP and DPO using the described portable mixing platform.
摘要:
It is lighter and easier to assemble. It comprises a) an anchoring sub-structure (10) for anchoring to the ground; b) a tracking sub-structure (20), mounted on the anchoring sub-structure (10) and such that it can rotate about an azimuth axis; c) a driving sub-structure (30) comprising two coaxial hoops (31) formed by a plurality of assembled stamped segments (33), said hoops (31) being joined by tie-rods (32); the driving sub-structure (30) being capable of elevation rotation in relation to the tracking sub-structure (20); d) a supporting sub-structure (50), in the form of a cradle, designed to support a reflective surface; and e) a modular connection sub-structure (40), manufactured with stamped elements, whereon the supporting sub-structure (50) is mounted, and fixed on the inside of the driving sub-structure (30).
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:
Superheated steam tower receiver with a well-defined configuration that benefits the transfer of heat between the surface of the component and the working fluid. Composed of at least four subpanels that define the circulation circuit for the steam by means of internal passages. The component is provided with saturated steam and for the production of said steam it is possible to use other solar concentrator technology. The proposed configuration minimizes the technological risks inherent in superheated steam receiver technology where drawbacks arise in the structure of the material owing to the thermal cycles to which the solar component is subjected.
摘要:
The present invention describes a method for the preparation of graphene or graphenic material films by the carbonization of biopolymers. The method comprises the following stages: - preparation of an aqueous solution of a non-crystallizable water-soluble biopolymer or a derivative of said biopolymer at the suitable pH, - coating of the substrate with the aqueous solution of the biopolymer prepared in the previous stage by immersion of the substrate in said solution or by using the spin coating technique, - conditioning of the aqueous solution of the biopolymer by means of a hydrothermal process consisting of subjecting the coated surface to a flow of nitrogen saturated with water vapor at the temperature of between 100 and 250 °C for a time between 30 minutes and several hours, - thermal decomposition of the biopolymer deposited on the substrate in the absence of oxygen at temperatures below 1200 °C. Among the biopolymers preferred in the present invention there are polysaccharides such as alginate, chitosan, starch and carragenates and derivatives thereof. Due to the properties of graphene, the substrates coated by this process have application in the industry of microelectronics, photovoltaics, as components of solar cells, etc..
摘要:
Support for facets that maintains the facet (10) attached to the structure of a heliostat (20), which comprises a connecting plate (8), a threaded bolt (4), a fixed attachment of the connecting plate (8) to the facet (10) and a movable attachment between the connecting plate (8) and the threaded bolt (4). The movable attachment enables assembling and disassembling the facet without having to reorient thereof as well as it enables to orientate the facet without having to place the facet.