摘要:
A new Compact Linear Fresnel Reflector (CLFR) "Etendue-Matched" concentrator designed for two evacuated tubular receivers with a double set of TERC (Tailored Edge Ray Concentrator) type asymmetric second stage secondary and a double set of second stage asymmetric CEC (Compound Elliptical Concentrator) combinations, aiming at operating temperatures above 560ºC.
摘要:
A support system for holding solar mirrors of a solar trough system includes a frame for supporting the mirrors. The system includes a rib attached to the frame. The system includes at least a first roller engaged with the rib along which the rib moves as the frame moves. A method for moving a frame supporting solar mirrors of a solar trough system includes the steps of moving the frame on a roller guided by a rib engaged with the roller and attached to the frame bottom to a first position. There is the step of moving the frame on the roller guided by the rib engaged with the roller and attached to the frame bottom to a second position. A roller for engaging with a rib attached to a frame that holds mirrors of a solar trough system. An apparatus for cleaning solar mirrors on a frame of a solar trough system. A method for cleaning mirrors on a framework of a solar trough system. A rib for a frame that holds solar mirrors of a solar trough system which engages with a roller. A support system for mirrors of a solar trough system.
摘要:
A device (1; 10; 11; 12) for storage and transfer of thermal energy associated with an incident solar radiation, which used in a solar plant for the production of energy, based on an optical plant configuration which makes solar radiation converge from above, and comprises: —a containment casing (2); and—a dual bed (31, 32) of fluidizable particles received inside the casing (2) and arranged the one circumscribed to the other one, wherein the casing (2) has at least one receiving cylindrical cavity (20) which extends through the bed (3) of particles and has a open top inlet (21) for receiving the solar radiation concentrated by a field of heliostats and an open or closed bottom (22) at the level of the base of the bed of particles, the overall arrangement being such that one of the beds of particles (31) is arranged in contact with the side skirt (23) of the cylindrical cavity (20) for storing thermal energy received from the solar radiation and the other one bed of particles (32) is arranged in contact with pipe bundles (41) crossed by the working fluid.
摘要:
A system for collecting solar energy using a plurality of energy collection elements arranged in a planar array within a stationary base structure, each comprising: an energy capture unit with optical means of focusing directional sunlight parallel to its axis onto one or more sunlight-to-electricity converters within itself, and means of sensing divergence of its axis from the sun's direction; and an angular positioning unit that orients said capture unit about two nested axes by slidably mounting two arcuate tracks in opposed and perpendicular arcuate slots, a convex track within said energy capture unit and a concave track within said base structure, each said slot equipped with a drive apparatus that engages its respective track and moves the positioner along it. The invention provides methods for determining the shapes and arrangement of such elements so as to maximize aperture efficiency while preventing collisions of adjacent elements.
摘要:
Ein Strahlungsenergiesammler (1) zum Sammeln von Strahlungsenergie einer Quelle, insbesondere der Sonne, hat einen ersten Träger (4) und eine am Träger (4) angebrachten Fluidführung (3). Er hat eine oder mehrere direkt oder indirekt am Träger (4) befestigten Lamellen (2) im Strahlungsweg vor der Fluidführung (3) und/oder direkt oder indirekt am Träger (4) befestigten Anbringungsvorrichtungen (5) hierfür. Ein paneelartiger Strahlungsenergiesammler (1) zum Sammeln von Strahlungsenergie einer Quelle, insbesondere der Sonne, hat einer Fluidführung (3) und eine mit der Fluidführung (3) direkt oder indirekt verbundene Isolierschicht (11), die von der Quelle aus betrachtet hinter der Fluidführung (3) liegt und als Wärmedämmung eines den Strahlungsenergiesammler (1) tragenden Dach- oder Wandbereichs eines Gebäudes ausgelegt ist.
摘要:
In an energy wave solar reflector assembly (12) for an energy concentrator (10), the assembly has a support structure (21) with support arms (22) extending from a central zone (24), and an array of concentric annular reflective elements (28) spacedly arranged on the support arms or on elongate mounting strips fixed to each or selected supported arms. The reflective elements having a reflective surface shaped to reflect incident energy waves, and a holding arrangement having holding devices (40, 74) arranged to hold the reflective elements in an orientation to direct the reflected energy waves thereof in a direction towards a focal zone (16) of the reflective elements.
摘要:
A linear concentrating solar collector includes two trough-type reflectors (130-1,130-2) having respective curved reflective surfaces (132-1,132-2) that define respective focal lines (FL1, FL2), and are connected along a common edge in a decentered arrangement such that the focal lines are parallel and spaced-apart, and such that solar radiation reflected by the curved reflective surfaces is concentrated and overlaps in a defocused state. In one embodiment a solar cell is disposed in the overlap region to receive the all of the reflected radiation from the curved reflective surfaces (132-1,132-2) in a defocused state. An optional solid optical structure is used to support and position the trough-type reflectors and solar cell, and to facilitate self-forming of the curved reflective surfaces. In other embodiments, two solar cells are mounted on the rear surface of the optical element, and the curved reflective surfaces reflect sunlight at angles that produce total internal reflection of the sunlight onto the solar cells.
摘要:
The aim of the invention is to build central receiver solar power plants in which the heliostat fields can be used more efficiently. To achieve said aim, a heliostat field consisting of a near field (1636) having a uniform reflector surface density ϱ of more than 60% is preferably combined with a far field (1638) whose reflector surface density ϱ decreases as the distance from the receiver increases. The invention also comprises central receiver solar power plants which consist exclusively of a near field having a uniform reflector surface density ϱ of more than 60%. The high reflector surface density ϱ in the near field (1636) and in areas of the far field (1638) is achieved by the use of heliostats having rectangular reflectors and a rigid horizontal axle suspension (FHA) or, alternatively, by heliostats having rectangular reflectors and a rigid quasipolar axle suspension (FQA). The heliostat field concentrates the solar radiation on a receiver (1610) whose target surface, aperture, thermal absorber or photovoltaic absorber has a normal vector which is directed downward to the heliostat field that extends below the receiver in the directions North, East, South and West. The receiver (1610) is mounted in a suspended manner to a support structure that extends over the heliostat field.
摘要:
Methods and apparatuses to increase a speed of airflow through a heat exchanger are described. An optoelectronic device comprising a heat exchanger is coupled to an airflow accelerator. The airflow accelerator comprises a surface to guide the airflow towards the heat exchanger. An optical element is coupled to concentrate light onto the optoelectronic device. The size of the surface, position of the airflow accelerator relative to the heat exchanger, or both can determine increase in speed of the airflow. A photovoltaic (“PV”) system comprises rows of receivers; rows of optical elements to concentrate light onto the receivers, and rows of airflow accelerators coupled to the receivers to increase the speed of airflow through heat exchangers. The airflow can be deflected by an airflow accelerator towards a heat exchanger. A wind load can be reduced by the airflow accelerator.