Solar Power Limited

Bethany Beach, DE, United States

Solar Power Limited

Bethany Beach, DE, United States

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A torque tube (10) of a support structure (1) for supporting at least one reflector (2) for reflecting sunlight (3) is provided. The torque tube (10) comprises following limitations: The torque tube (10) comprises at least one first external torque tube surface (101). The torque tube (10) comprises at least one second external torque tube surface (102). Each of the external torque tube surfaces (101, 102) comprises at least one lug (1011, 1021) for frictional connections of the torque tube (10) with the support structure (1). Each of the lugs (1011, 1021) protrudes the respective external torque tube surface (101, 102). In addition, the lugs (1011, 1021) are connected directly to each other. The lugs (1011, 1021) form a single elongated piece. In addition, a solar collector assembly (2000) with at least one support structure (1) for supporting at least one reflector (2) for reflecting sunlight (3) is provided, wherein the support structure (1) comprises at least one of that torque tube (10). Finally, a use of the solar collector assembly for a solar field of solar thermal power plant for converting solar energy into electrical energy is provided. With the solar field solar radiation is collected by the solar collector assemblies, transferred into thermal energy for generating steam with which a stream turbine is driven for producing electricity.


A support structure (1) for supporting of at least one reflector (2) for reflecting sunlight (3) with following limitations is provided: At least one support base (10), at least two fixed support elements (11) for holding the reflector (2), wherein the fixed support elements (11) are mounted to the support base (10) via a firm connection (110) and at least two flexible support elements (12) for holding the reflector (2), wherein each of the two flexible support elements (2) are mounted to the support base (10) via at least one rotatable joint (120) for a rotatable movement of the flexible support element (12) towards the support base (10). In addition, a solar collector assembly (2000) with at least one such support structure (1) for supporting of at least one reflector (2) for reflecting sunlight (3) is provided. Finally, a use of the solar collector assembly for a solar field of solar thermal power plant for converting solar energy into electrical energy is provided. With the solar field solar radiation is collected by the solar collector assemblies, transferred into thermal energy for generating steam with which a stream turbine is driven for producing electricity.


Heat receiver tube (1) for absorbing solar energy and for transferring absorbed solar energy to a heat transfer fluid (111) which can be located inside of at least one core tube (11) of the heat receiver tube (1) is provided. The core tube (11) comprises a core tube surface (112) with at least one solar energy absorptive coating for absorbing solar radiation (2). The core tube (11) is enveloped by at least one enveloping tube (10). The enveloping tube (10) comprises at least one enveloping tube wall (101) which is at least partly transparent for the solar radiation (2). The enveloping tube wall (101) comprises at least one inner enveloping tube surface (102). The core tube (11) and the enveloping tube (10) are coaxially arranged to each other such that an inner heat receiver tube space (3) is formed which is bordered by the core tube surface (112) and the inner enveloping tube surface (102). The heat receiver tube (1) comprises at least one inlet port (4) for pouring in of at least one inert gas (5) into the inner heat receiver tube space (3). The inert gas is preferably Xenon. This reduces the thermal loss of the heat receiver tube.


A heat receiver tube for absorbing solar energy and for transferring absorbed solar energy to a heat transfer fluid which can be located inside of at least one core tube of the heat receiver tube is provided. The core tube includes a core tube surface with at least one solar energy absorptive coating for absorbing solar radiation. The core tube is enveloped by at least one enveloping tube. The enveloping tube includes at least one enveloping tube wall which is at least partly transparent for the solar radiation. The enveloping tube wall includes at least one inner enveloping tube surface. The core tube and the enveloping tube are coaxially arranged to each other such that an inner heat receiver tube space is formed which is bordered by the core tube surface and the inner enveloping tube surface.


A heat receiver tube for absorbing solar energy and for transferring absorbed solar energy to a heat transfer fluid which can be located inside of at least one core tube of the heat receiver tube is provided. The core tube includes a core tube surface with at least one solar energy absorptive coating for absorbing solar radiation. The core tube is enveloped by at least one enveloping tube. The enveloping tube includes at least one enveloping tube wall which is at least partly transparent for the solar radiation. The enveloping tube wall includes at least one inner enveloping tube surface. The core tube and the enveloping tube are coaxially arranged to each other such that an inner heat receiver tube space is formed which is bordered by the core tube surface (and the inner enveloping tube surface.


Heat receiver tube (1) for absorbing solar energy and for transferring absorbed solar energy to a heat transfer fluid (111) which can be located inside of at least one core tube (11) of the heat receiver tube (1) is provided. The core tube (11) comprises a core tube surface (112) with at least one solar energy absorptive coating for absorbing solar radiation (2). The core tube (11) is enveloped by at least one enveloping tube (10). The enveloping tube (10) comprises at least one enveloping tube wall (101) which is at least partly transparent for the solar radiation (2). The enveloping tube wall (101) comprises at least one inner enveloping tube surface (102). The core tube (11) and the enveloping tube (10) are coaxially arranged to each other such that an inner heat receiver tube space (3) is formed which is bordered by the core tube surface (112) and the inner enveloping tube surface (102). The heat receiver tube (1) comprises at least one pressure adapting device (4) for adapting a space pressure of the inner heat receiver tube space (3).


Patent
Solar Power Limited and SolarCity | Date: 2017-05-17

A system is described for fabricating solar cells in a large-scale solar cell fabrication facility. The system includes a first processing station, a second processing station, and a wafer-storage apparatus positioned between the first processing station and the second processing station. A microenvironment within the wafer-storage apparatus is substantially separate from a large environment of the large-scale solar cell fabrication facility, and the microenvironment is filtered to reduce chemicals, moisture, and volatile organic compound. The wafer-storage apparatus is configured to temporarily store wafers emerging from the first processing station and queuing for processing at the second processing station.


Heat receiver tube (1) for absorbing solar energy and for transferring absorbed solar energy to a heat transfer fluid (111) which can be located inside of at least one core tube (11) of the heat receiver tube (1). The core tube (11) comprises a core tube surface (112) with at least one solar energy absorptive coating (1121) for absorbing solar radiation (2). The core tube (11) is enveloped by at least one enveloping tube (10). The enveloping tube (10) comprises at least one enveloping tube wall (101) which is at least partly transparent for the solar radiation (2). The enveloping tube wall (101) comprises at least one inner enveloping tube surface (102). The core tube (11) and the enveloping tube (10) are coaxially arranged to each other such that an inner heat receiver tube space (3) is formed which is bordered by the core tube surface (112) and the inner enveloping tube surface (102). The inner heat receiver tube space (3) comprises an inert gas (5). The heat receiver tube (1) comprises at least one dimension adapting device (6) with a flexible adapting device wall (60) for compensation of a thermally induced change of at least one dimension of the heat receiver tube (1). The enveloping tube (10) and the dimension adapting device (6) are joined together by at least one heat receiver tube skirt (103) with at least one heat receiver tube skirt wall (1031). The heat receiver tube skirt wall (1031) comprises at least one inlet port (4) for pouring in of at least one inert gas (Xe or Kr) into the inner heat receiver tube space (3). The inlet port (4) is sealed by an inlet port sealing (40) for inhibiting a leakage of the inert gas (5) out of the inner heat receiver tube space (4). The inlet port sealing (4) comprises at least one metal (41).


A solar energy absorptive coating for absorbing sunlight energy is provided. The coating includes a multilayer stack including, a first absorbing layer with first absorbing layer material for absorbing an absorption radiation of a certain spectrum of the sunlight, a transmission dielectric layer with a transmission dielectric layer material for a transmission of the absorption radiation, and a second absorbing layer with a second absorbing layer material for absorbing the absorption radiation, wherein at least one of the absorbing layer materials has an absorbing layer material refractive index for the absorption radiation, between 1.5 and 4.0, and an absorbing layer material extinction coefficient for the absorption radiation, between 0.8 and 3.0, and the transmission dielectric layer material has a dielectric layer material refractive index for the absorption radiation, between 1.0 and 3.0, and a dielectric layer material extinction coefficient for the absorption radiation, between 0.0 and 0.2.


A heat receiver tube for absorbing solar energy and for transferring absorbed solar energy to a heat transfer fluid which can be located inside at least one core tube of the heat receiver tube is provided. The heat receiver tube comprises following limitations: The core tube comprises a core tube surface with at least one solar energy absorptive coating for absorbing solar radiation of the sunlight. The core tube is enveloped by at least one enveloping tube. The enveloping tube comprises at least one enveloping tube wall which is transparent for the solar radiation. The enveloping tube wall comprises at least one inner enveloping tube surface. The core tube and the enveloping tube are coaxially arranged to each other with an inner heat receiver tube space which is bordered by the core tube surface and the inner enveloping tube surface. At least one internal sunlight reflector unit with at least one internal sunlight reflecting surface for directing sunlight radiation to the core tube surface is arranged in the inner heat receiver tube space. The solar collector comprises a parabolic mirror having a sunlight reflecting mirror surface for directing sunlight to a focal line of the sunlight reflecting mirror surface. The heat receiver tube is arranged in the focal line of the sunlight reflecting mirror surface such that at sunlight which is reflected by the mirror surface strikes the internal reflecting surface.

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