摘要:
The invention relates to a method for producing a solar power receiving tube and to the resulting tube, which is of the type that includes: an outer glass tube, an inner metal absorber through which a heat-transfer fluid flows, and an intermediate area in which the vacuum is produced. The method comprises the following steps: i. Production of the metal tubes ii. Production of the glass tubes: namely a longer central glass tube and two shorter glass tubes for the ends. iii. Process for the production of the Kovar rings or glass-metal transition elements iv. Process for the welding of the Kovar rings to the tubes v. Process for the production of the bellows or expansion compensating devices assemblies vi. Assembly of the products obtained in the preceding operations vii. Creation of the vacuum and anodising of the welds
摘要:
Transparent panes made of glass or of synthetic material, which simultaneously create good light trapping properties by linear structural elements and allow a thermal treatment and hardening of the glass without warping. Groups of parallel elements for which the orientation of the longitudinal extension of the elements alternates from one group to another are formed globally on the surface of the substrate. Moreover, the parallel elements can include a curvature superimposed on their longitudinal extension, which makes it possible to obtain a non-oriented reflected image with a weak screen effect. These panes can be used as covering for photovoltaic components designed to use solar energy, and can also serve a decorative purpose in the construction industry, for example for glazed doors or panes for furniture.
摘要:
The subject of the invention is a transparent substrate (6) having at least one antireflection coating, made from a film (A) comprising multiple thin layers of alternately high and low refractive indexes.The multilayer film comprises, in succession: a high-index first layer (1), having a refractive index n1 of between 1.8 and 2.3 and a geometrical thickness e1 of between 5 and 50 nm; a low-index second layer (2), having a refractive index n2 of between 1.30 and 1.70 and a geometrical thickness e2 of between 5 and 50 nm; a high-index third layer (3), having a refractive index n3 of between 1.8 and 2.3 and a geometrical thickness e3 of at least 100 nm; a low-index fourth layer (4), having a refractive index n4 of between 1.30 and 1.70 and a geometrical thickness e4 of at least 80 nm. This antireflection coating can be used in solar modules.
摘要:
A daylighting system for structures consisting of a solar energy collector means including a modified Cassegrainian optical system, a means of moving said collector means to an attitude tracking the sun's position in the sky during daylight hours, a heat separation means for removing heat from the concentrated beam of sunlight and for applying said heat to other uses, and one or more hollow members each comprising a reflective internal surface for distributing the sunlight inside said structure.
摘要:
The invention relates to a transparent medium comprising pearl lustre pigments having angle-selective reflection and/or transmission properties and to the use thereof, especially in transparent thermal insulation systems (TIMs).
摘要:
It is provided a solar energy module for converting solar radiation to thermal energy. The module includes a thermally insulating element transmissive to solar radiation and having low transmissivity to thermal infra-red radiation, an absorbing element, a sealed enclosure, and a variable portion in the envelope of the sealed enclosure. This portion is adapted for varying the volume available to gas enclosed in the enclosure in accordance with changing temperature of the enclosed gas. Also, it is provided a solar energy module which includes a thermally insulating element, an absorbing surface and liquid pipes for absorbing the solar radiation, and an air duct thermally coupled thereof. The heated liquid and the heated air are usable for a variety of thermal applications. A heat storage may be thermally coupled to the absorbing surface and to the liquid pipes. The air duct has several air valves, and is associated with a controller for regulating air flow through the air duct. The controller may regulate heat flow in accordance with an optimization program, receiving inputs from several sources, like a sensor monitoring a building, a sensor monitoring the solar energy module, and an environment sensor.
摘要:
In one embodiment a solar collector is provided. The collector has a modular heat transfer component, which includes a heat transfer core to heat up a heat transfer fluid in the form of an aerogel. The heat transfer core positioned comprises a light absorption element, and a fluid transfer element in the form of an aerogel. The aero gel comprises voids shaped and dimensioned to support passive pumping of the heat transfer fluid therethrough.
摘要:
A method of manufacturing a transparent pane, in particular a glass pane, which includes on at least one of its main surfaces a surface structure including an assembly of specified individual motifs in relief, in particular pyramids, cones, or truncated cones, created by embossing or by rolling. A structure is created on the surface of the pane constituted by individual motifs, based on one or more basic motifs but which are distinguished from each other by their depth, their height, and/or the perimeter of their base area, and/or by the position of their peak with respect to their base. With this variation, formation of intensity peaks of the reflected light is prevented and at the same time a high quality of light trapping is obtained by panes suitable, for example, for solar applications.
摘要:
In one embodiment a solar collector is provided. The collector has a modular heat transfer component, which includes a heat transfer core to heat up a heat transfer fluid. The collector makes use of the heat transfer fluid itself to prevent heat loss through radiation.
摘要:
Solar thermal collector comprising a plurality of parallel vertical tubes, connected to each other by one upper horizontal tube and one lower horizontal tube through which a heat carrying fluid flows, a glass surface that covers the parallel vertical tubes, the upper horizontal tube and the lower horizontal tube, and a dissipating device installed in an upper part of the solar thermal collector, the heat dissipating device comprising a thermostatic valve, a heat exchanger and a return pipe, wherein the thermostatic valve is housed in the upper horizontal tube, the thermostatic valve and the heat exchanger being connected to a pipe by way of an inverted U-shaped tube provided at a greater height than the inlet to the heat exchanger, such that, under normal working conditions, energy losses by heat transfer by convection from the thermostatic valve to the heat exchanger are interrupted.