摘要:
Portable spectrophotometer and method for characterizing solar collector tubes for simultaneously and on-field characterizing reflection and transmission coefficients. This device includes all the components needed to take this measurement, such as a module that takes the measurement of the reflection coefficient (R) of the inner tube (1'), a module that takes the measurement of transmission coefficient (T) of the outer tube (1"), an electronic data acquisition and processing system (12), an external computer (13) for controlling the device and sending the measured data (17) and a communication system (15) between device and the computer (13).
摘要:
This invention relates to a solar energy collector that converts solar radiation into both electrical and thermal energy. More specifically this invention relates to a concentrating solar energy collector with an integrated construction that minimizes cost, bulk, and weight, and maximizes overall efficiency. Typical non-concentrating solar collectors use photovoltaic cells over the entirety of their surface. These solar cells are the most expensive part of the collector. This invention discloses using a reflector to concentrate the incident radiation on photovoltaic cells with one-twentieth the area of the reflector, and transferring the co-generated thermal energy into a working fluid pumped through the cell support structure.
摘要:
A solar thermal energy system (20) includes a plurality of modules (22), which are connected end-to-end to define an extended solar trough. Each module includes a frame, having an outer edge of circular profile and an inner edge of parabolic profile, having a focus at a geometrical center of the circular profile. The frame includes first and second end segments (42) at respective first and second ends of the module, and a pair of rigid torque tubes (44) connected longitudinally between the first and second end segments. A motorized drive (46) engages and rotates the outer edge of the frame about the geometrical center. Multiple mirror segments (40) are fitted to the inner edge of the frame. At least one heat transfer tube segment (24) is held stationary at the geometrical center of the frame.
摘要:
Working method for a system for partial mirroring of glass tubes and said system, made up by an tube supply facility, a chain where the mirroring is carried out in different fixed stations and a tube output facility, in which the main partial mirroring steps are the following: - cleaning the glass tube - sensitizing the surface - washing - optional activation or super-sensitization step - washing - plating - washing - drying in the case of external partial mirroring, the following steps are added: - depositing the copper layer - washing - depositing anti-corrosion paint - depositing mechanical and UV protective paint - curing the paint - external drying of the tube
摘要:
An apparatus is disclosed including: a trough shaped reflector extending along a longitudinal axis and including at least one reflective surface having a shape which substantially corresponds to an edge ray involute of the absorber.
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:
Vacuum enhancing system or non-evaporable getter of the type used en solar-receptor vacuum tubes which comprises a series of non-evaporable getter material pads the geometry of which is that of a prism with rounded corners and said pads are drilled through the centre thereof and linked by means of a cable ending in a quick-fit closure that allows the fitting thereof to be automated. This system is placed downstream of the expansion-compensating device in the form of non-radial bellows in the longitudinal direction and in the void defined by the vessel that is the interface part between the absorber tube and the expansion-compensating device. A getter system is placed in a radial arrangement, at each of the two ends of the receptor tube, resulting in a receptor tube of completely symmetrical geometry.
摘要:
A solar collector with external reflector. A solar collector includes a glass housing having a heat pipe disposed within the housing and a light reflector disposed external to the housing.
摘要:
A solar panel comprises a conduit which in the usual way is designed to comprise a heat carrying medium for heat transfer between the solar panel and the surrounding environment. The conduit is placed so that it can be heated by the rays from the sun. The solar panel comprises a chemical heat pump of the type hermetically sealed unity tube with a reactor part, an evaporator/condenser part and a passage there between. The part of the unity tube comprising the reactor part of the chemical heat pump is positioned in heat conducting contact with the first conduit and thereby the part of the unity tube with the reactor part will be heated. The unity tube may be surrounded by a heat insulating part of vacuum jug type comprising an evacuated space between an outer wall and an inner wall. The inner wall may at its outwards facing surface comprise a radiation receiving part adapted to transform solar radiation to heat and which is in heat conducting contact with the first area and the first conduit.
摘要:
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.