25 results about "Parabolic trough" patented technology

The invention belongs to the technical field of trough type solar thermal power generation, and discloses a medium-free preheating method and system for a trough type heat collector, which are suitable for a trough type photo-thermal power station taking fused salt, heat-conducting oil and the like as heat collecting media and can be applied to preheating before the heat collector is put into operation for the first time, restarting preheating after maintenance and conventional preheating scenes in a low-temperature environment. The invention further discloses a medium-free preheating system for the trough type heat collector, the medium-free preheating system is used for achieving the corresponding medium-free preheating method, the medium-free preheating system comprises a trough type heat collector body, a driving control system, a medium injection unit, a temperature monitoring device and an irradiation sensing unit, and all the components are connected through signal lines or pipelines to cooperatively complete the preheating and medium injection process. The invention further discloses a temperature monitoring device of the medium-free preheating system for the groove type heat collector, the temperature monitoring device comprises a temperature sensing module, a signal transmission module and a data processing module, a distributed arrangement mode is adopted, and the temperature monitoring device is used for collecting multi-point temperature data of the pipe wall of the heat collecting pipe in real time and providing a reliable basis for regulation and control in the preheating process.

An electricity generation system including an electricity generating plant with a turbine, a dynamo and a solar power plant having an absorber tube for a parabolic trough solar power plant that includes a glass pipe which extends from a first end to a second end of a parabolic trough, a helical pipe enclosed within the glass pipe. A sand filled pipe is surrounded by the helical pipe. An inner pipe extends from the first end to the second end of the parabolic trough along the central axis of the glass pipe. A solenoid valve is configured to block the water from entering the inner pipe when the solenoid valve is closed and release the water to the inner pipe when the solenoid valve is opened. The turbine is fluidly connected to the solar power plant to receive the steam and produce mechanical energy which rotates the dynamo.

A measurement method and a measurement device for profile accuracy of parabolic trough reflector are provided, which solves the problem of existing technology relying on the final assembly plant for detection and the inability to detect on the final application site, as well as the high requirements of existing optical detection device for the plant. The method and device of the present disclosure use light emitted from a light source to simulate the light emitted from the focal point of a parabolic reflector to be detected, then emitting onto the parabolic reflector to be detected. The shape and position accuracy of the parabolic reflector to be detected are measured based on the deviation of the reflected light, and it no longer rely on the final assembly plant and can detect the final profile accuracy of parabolic reflectors on the application site or after regular operation, significantly reducing costs.

A parabolic trough collector module with an absorber tube with a central axis; a parabolic reflector which focuses solar radiation onto the absorber tube and which includes a reflector surface; and a stand device, on which the parabolic reflector is pivotally mounted, the stand device having at least one stand post and the absorber tube being mounted on the stand post. In the reflector surface, the parabolic reflector has a cut-out section running perpendicularly to the longitudinal direction, and a support device extends through the cut-out section and has an absorber tube mount that forms a linear guide, on which mount the absorber tube is slidingly mounted in the longitudinal direction.

A parabolic trough solar collector for concentrated solar power (CSP) applications includes a solar concentrator, a central mount to which the solar concentrator is coupled, and a receiver tube fixed at a focal point above the solar concentrator. The solar concentrator is operable to actuate relative to a single axis through the receiver tube. The surface of the solar concentrator is arranged with a fixed slope relative to a horizontal plane.

Parabolic trough collector module (1) with an absorber tube (3) having a central axis (A), with a parabolic reflector (5) focusing solar radiation onto the absorber tube (3) and having a reflector surface (7), wherein the parabolic reflector (5) has two longitudinal sides (5b) extending parallel to the central axis (A) of the absorber tube (3) and two end faces (5a), and with a support (9) comprising a first support (9a) and a second support, each arranged on one of the end faces (5a) of the parabolic reflector (5), wherein the parabolic reflector (5) has a support structure (11) extending along the two longitudinal sides (5b) and the two end faces (5a), wherein the parabolic reflector (5) is rotated about an axis of rotation via the support structure (11) by means of a radial bearing (10) on an upper section (9b) of the first support (9a). (D) is pivotably mounted, and with a drive device (19),which pivots the parabolic reflector (5) around the axis of rotation (D) to track the sun's position and return it to a starting position, wherein the drive device (19) comprises a drive motor (20) and an output device (22) connected to the support structure (11), the drive motor driving the output device (22) to transmit the rotational movement to the parabolic reflector (5), the output device (22) being axially mounted on a lower section (9c) of the first stator (9a) to form an axial bearing (24) for the parabolic reflector (5).

1. Name of the product in this design: Parabolic trough solar heating device. 2. Purpose of this design: for solar heating. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

A method for generating electricity with a system having a water tank, an electricity generating plant and a parabolic trough solar power plant including transferring water from the water tank to the solar power plant. The water is received in a helical pipe located within a glass pipe encasing an absorber tube of a parabolic trough solar power plant. The glass pipe and the helical pipe extend from a first end to a second end of a parabolic trough along a central axis of the glass pipe an. During periods of high irradiance the water is converted in the helical pipe to steam by focusing solar radiation on the absorber tube. A sand filled pipe extends from the first end to the second end of the parabolic trough along the central axis of the glass pipe Steam is expelled from the helical pipe. During periods of low irradiance the water is released the water within the helical pipe to the inner pipe located within the sand filled pipe, converting the water to steam with the heated sand in the sand filled pipe, expelling the steam, transferring the steam to a turbine to generate mechanical energy in the turbine, and transferring the mechanical energy to generate electricity.

A solar collector includes a conduit for a working fluid and a parabolic trough reflector arranged to focus reflected sunlight onto the conduit. The parabolic trough reflector is arranged to pivot around the conduit.

This invention belongs to the field of photogrammetry technology and relates to a rapid photogrammetry system and installation method for a parabolic trough solar collector support. It includes: an image acquisition device positioned above the parabolic trough solar collector support to be measured; multiple first reflective markers, each comprising a reflective coating and a circular exposed area on the surface of the reflector support component of the parabolic trough solar collector support; multiple second reflective markers detachably mounted on the ends of the parabolic trough solar collector support and on the collector tube supports of the parabolic trough solar collector support; a measuring scale spaced apart from the parabolic trough solar collector support; and a data processing device connected to the image acquisition device. This invention significantly reduces the installation work of the reflective markers, thereby significantly improving the efficiency of photogrammetry operations.

The present invention proposes a water-heat cogeneration system based on a solar-powered multi-heat-source heat pump, which integrates a concentrating photovoltaic system, a parabolic trough solar collector, a semi-effect absorption heat pump, a geothermal source heat pump, an air source heat pump, a transcritical CO2 power cycle system and an LT-MED system to simultaneously meet the user's thermal energy and fresh water needs; the photovoltaic waste heat of CPV is used to drive the semi-effect absorption heat pump, thereby fully utilizing solar energy and improving the system's heating efficiency; the heat energy generated by the PTSC system is used as a heat source to drive the TCPC system and the LT-MED system; the electrical energy generated by the CPV and the TCPC is used to drive the heat pump equipment, realizing self-production and self-sale of energy and effectively reducing system power consumption.

The invention relates to the technical field of solar heat utilization, in particular to a method for analyzing the influence of environmental factors on the heat efficiency of a parabolic trough type solar heat collector. Establishing a three-dimensional geometric model of the heat collector and carrying out grid division; setting boundary conditions and a physical model; based on a six-band radiation transmission model and a Bouger's law, calculating attenuation of the aerosol to solar radiation; constructing an aerosol two-dimensional classification method based on the optical thickness and the relative optical thickness; analyzing the influence of the operation parameters, the space-time environment, the aerosol type and the visibility on the thermal efficiency; and finally calculating and outputting thermal efficiency based on an energy balance formula. According to the method, action mechanisms of different environmental factors can be accurately analyzed, the accuracy of performance prediction of the heat collector in the complex atmospheric environment is remarkably improved, and a reliable theoretical basis is provided for system site selection, operation optimization and efficiency evaluation.

The invention discloses a photo-thermal supply system and method for LOHC dehydrogenation, and belongs to a solar energy application and hydrogen energy storage and transportation technology, the system comprises an LOHC dehydrogenation reactor and an HTF circulating pipeline, the HTF circulating pipeline passes through the LOHC dehydrogenation reactor and a parabolic trough heat collector, and a PCM energy storage module; a high-temperature pump is installed on the HTF circulating pipeline and used for driving a heat exchange medium to conduct heat transfer between the parabolic trough heat collector and the LOHC dehydrogenation reactor and between the parabolic trough heat collector and the PCM energy storage module through the HTF circulating pipeline. The phase change material with an optimized formula is integrated in the PCM energy storage module, the defect that heat supply is unstable due to the intermittent characteristic of a solar parabolic trough heat collector can be overcome by matching with an HTF circulating pipeline, and the phase change material releases latent heat to support continuous operation of the LOHC dehydrogenation reactor at night or in the period of insufficient sunlight. By switching the flowing direction of the heat exchange medium in the HTF circulating pipeline, the stability and continuity of heat supply can be guaranteed in the daytime and at night or when sunlight is insufficient.

A concentrating reflector, comprising a transparent curved sheet; a flexible reflective sheet fastened to the convex outer side of the transparent curved sheet; optionally, a protective backing covering the flexible reflective sheet, including, optionally, an undercut on its rim; optionally, means for fastening concentrating reflector to an external structure; some variants: one comprising a plurality of petals or identical radial divisions of the above concentrating reflector and a central plate holder, including a plurality of insertion clips for holding each said petal; another variant, comprising a transparent parabolic trough; a flexible reflective sheet fastened to the convex outer side of the transparent parabolic trough; a backing support covering the flexible reflective sheet, a plurality of parabolic supports; and a structural beam; and another variant, comprising a transparent cylinder; flexible reflective sheet spread partly on and fastened to the convex outer side of the transparent cylinder; and, optionally, a backing support.

A parabolic trough collector module (1) comprising an absorber tube (3) with a central axis (A), comprising a parabolic reflector (5) which focuses solar radiation onto the absorber tube (3) and has a reflector surface (7), the parabolic reflector (5) having two longitudinal sides (5b), which extend parallel to the central axis (A) of the absorber tube (3), and two end sides (5a), and comprising a stand system (9) having a first stand (9a) and a second stand, which are each arranged on one of the end sides (5a) of the parabolic reflector (5), the parabolic reflector (5) having a support structure (11) which extends along the two longitudinal sides (5b) and the two end sides (5a), and the parabolic reflector (5) being mounted on an upper portion (9b) of the first stand (9a) pivotably about an axis of rotation (D) via the support structure (11) by means of a radial bearing (10) in each case, and comprising a drive device (19), which pivots the parabolic reflector (5) about the axis of rotation (D) for tracking according to the position of the sun and for returning to a starting position, the drive device (19) having a drive motor (20) and an output device (22) which is connected to the support structure (11), the drive motor driving the output device (22) in order to transmit the rotational movement to the parabolic reflector (5), the output device (22) being axially mounted on a lower portion (9c) of the first stand (9a) in order to form an axial mount (24) for the parabolic reflector (5).

A solar collector with a support is described, which has supporting sections arranged side by side, which are fixed to adjacent surfaces (2) arranged on both sides of the support (1) and consist of an open plastic shell (3), the supporting section having side edge flanges (17) with a predetermined parabolic groove for accommodating a reflector section (16) and a central rib (8) protruding from the shell bottom (7) starting from the adjacent side end face, which forms a reflector support surface (18) following the direction of the parabolic groove. In order to ensure good shape stability, it is proposed that the central rib (8) ends before the outlet side end face opposite to the adjacent side end face, at least one side rib (11) protrudes from the shell bottom (7) between the central rib (8) and the side shell wall (10), the at least one side rib (11) starts from the continuous end wall (9) of the outlet side end face and ends before the adjacent side end face, and forms a reflector support surface (18) following the direction of the parabolic trough, and the side shell wall (10) protruding from the shell bottom (7) and the wall (12) of the central rib (8) form a stepped shoulder (13).

The parabolic trough solar concentrator described within is sized for shipping in containers and mounting on existing structures without requiring specialized labor or equipment. Besides achieving a proximity to the thermal load not previously achievable economically and preserving precious land, the concentrator array shelters the area below from the sun reducing its energy requirement for cooling and making it more inhabitable when cooling is not provided. As the troughs are generally mounted on an incline on roof structures, they can provide for rainwater collection.

A solar collector that comprises a conduit for a working fluid, and a parabolic trough reflector arranged to focus reflected sunlight onto the conduit. The parabolic trough reflector is arranged to pivot around the conduit.

The invention belongs to the technical field of solar comprehensive utilization and methanol synthesis, and relates to a solar-driven methanol synthesis and water electrolysis coupling system. The device comprises a solar energy light-electricity-heat coupling unit, the solar energy light-electricity-heat coupling unit is composed of a water tank, a preheater, a parabolic trough type solar heat collector, a photovoltaic cell panel and a heat exchanger, a water outlet of the water tank is connected with a water inlet of the preheater through a pipeline, a water outlet of the preheater is connected with a water inlet of the parabolic trough type solar heat collector through a pipeline, and a water outlet of the photovoltaic cell panel is connected with a water outlet of the parabolic trough type solar heat collector through a pipeline; a water outlet of the parabolic trough type solar heat collector is connected with a heat flow inlet of the heat exchanger through a pipeline, and the photovoltaic cell panel is electrically connected with the electric heater and system electric equipment through cables. According to the invention, through a solar light-electricity-heat multi-energy coupling technology, the utilization limitation of single photo-thermal or photo-electricity is broken through, high-temperature heat energy is supplied through photo-thermal, electric energy is supplemented through photo-electricity, a solid oxide electrolytic cell (SOEC) is cooperatively driven to produce hydrogen, and the solar energy potential is excavated to the maximum extent.

This invention discloses a dynamic testing device and method for the efficiency of a parabolic molten salt trough solar collector, specifically relating to the field of dynamic efficiency testing technology for solar collectors. The device includes a molten salt circulation section, a measuring instrument section, a cooling circulation section, and an oil-salt heat exchanger. By adjusting the first regulating valve in the molten salt circulation section, the third regulating valve in the cooling circulation section, and the frequency of the silicone oil pump, this invention can flexibly adapt to the flow regulation requirements and temperature rise conditions at the commissioning site. It can achieve dynamic testing of thermal efficiency under complex actual operating conditions without changing the original operating logic, and the test results more accurately reflect the true operating performance of the solar collector.

The invention relates to the technical field of solar energy utilization. The invention provides a parabolic trough condenser design method based on tolerance angle and condensation ratio analysis, a parabolic trough condenser comprises a reflecting surface and a receiver, and the method comprises the following steps: S1, introducing a tolerance angle as a main control parameter, and establishing an initial one-dimensional model of the parabolic trough condenser; s2, on the basis of the initial one-dimensional model, determining receiver diameters and reflecting surface opening widths corresponding to different tolerance angles, and calculating a condensation ratio; s3, performing function fitting processing on the corresponding data of the tolerance angle and the condensation ratio; s4, according to the function relationship, using the condensation ratio to inversely calculate a tolerance angle, and using the tolerance angle, the receiver diameter and the opening width to construct a target one-dimensional model; and S5, converting the target one-dimensional model into a three-dimensional model to obtain the required parabolic trough condenser structure. According to the method, the rapid design of the parabolic trough condenser can be realized without depending on complex manual operation and empirical value selection, and the method has relatively high engineering application value and popularization significance.

This invention provides a method, system, and storage medium for estimating the area of ​​a parabolic trough solar collector field. The method includes: obtaining the collector model and parameters used in the parabolic trough solar thermal field; obtaining the changes in solar irradiance and incident angle at the location of the parabolic trough solar thermal field to determine the solar irradiance received by the mirrors of the parabolic trough collector; obtaining the optical efficiency of the parabolic trough collector to determine the solar irradiance absorbed by the absorber tubes; obtaining the thermal conversion efficiency and operating time of the parabolic trough collector to determine the solar irradiance absorbed by the heat transfer medium flowing through a unit length of absorber tubes; determining the single-loop length of the collector field based on the temperature of the compressed heat transfer medium and the expansion heat temperature, combined with the collector field parameters of the parabolic trough solar thermal power plant; calculating the design flow rate of the single loop of the collector field based on the optimal solar irradiance value; calculating the flow rate of the single loop and the total number of loops during the operating time based on the total amount of compressed heat transfer medium to be heated; and calculating the total area of ​​the collector field. This invention solves the problems of poor flexibility and high complexity in existing solar thermal compressed air energy storage systems.

A concentrator (C) of incident solar radiation exhibiting a solar spectrum, the concentrator (C) comprising: - a parabolic trough mirror (1), arranged to receive the incident solar radiation, designed to reflect a first spectral region of the solar spectrum; - an array of reflectors (2), arranged above the parabolic trough mirror (1) to receive the incident solar radiation, designed to transmit the first spectral region to the parabolic trough mirror (1) and reflect a second spectral region, different from the first spectral region. Figure 1

An electrodeless discharge lamp (100) having one or more fixed light emitting bulbs (21, 211, 212, 213) within a common electrically conductive envelope to confine an electromagnetic excitation field provided by a plurality of sources. Each bulb can be excited by a plurality of electromagnetic radiation sources or a single electromagnetic radiation source. A tubular implementation of the lamp with two magnetron or transistor electromagnetic sources facing each other at the ends of the tubular bulb is particularly suitable for mounting at the focal line of a parabolic trough reflector. Some variants incorporate bulbs of different constituent elements and can individually set the excitation level to control the spectrum of the emitted light.

A distributed electricity grid that includes solar powered energy producing facilities, substations, and electricity transmission lines. The solar powered energy producing facilities are in electrical connection with the substations through one or more of the electricity transmission lines. Each solar powered energy producing facility includes an electricity generating plant having a turbine and a dynamo that are mechanically connected, and a parabolic trough solar power plant that contains a glass pipe in a parabolic trough, a helical pipe enclosed within the glass pipe configured to hold water, a sand filled pipe surrounded by the helical pipe, an inner pipe centered within the sand filled pipe, and a solenoid valve connected between the helical pipe and the inner pipe.