Reflector seasonal adjustment type light-gathering and heat-collecting device

Abstract

The invention discloses a reflector seasonal adjustment type light-gathering and heat-collecting device. The reflector seasonal adjustment type light-gathering and heat-collecting device comprises a main reflector, a rotating rod module, a reflector supporting and adjusting module and a receiver module, wherein the rotating rod module comprises a supporting rod, a positioning cross rod, a rotating shaft, a rotating rod, a receiver fixing frame, a balancing weight and a power device; the reflector supporting and adjusting module comprises a rotating frame, an angle adjusting and fixing device and an adjustable reflector supporting frame; and the upper end of the rotating frame is connected to the positioning cross rod, the rotating frame can rotate around the positioning cross rod, and a greenhouse is arranged outside the main reflector, the rotating rod module, the reflector supporting and adjusting module and the receiver module. The reflector seasonal adjustment type light-gathering and heat-collecting device has the advantages that the number of rotating components is small, the solar energy utilization rate of the unit occupied area is high, the light-gathering effect is excellent, the wind resistance is good, the stability of the device is high, the construction and maintenance cost is low, and the weight is low.

Description

technical field [0001] The invention relates to a solar heat collecting device, in particular to a reflective plate seasonally adjustable concentrating heat collecting device, which belongs to the technical field of solar energy utilization. Background technique [0002] In order to convert solar energy into higher-grade thermal energy, it is necessary to obtain a higher temperature working medium through concentrating methods, including line focusing (trough, linear Fresnel) and point focusing (tower, dish) type), and the line-focusing method has been more popularized and applied due to its low cost and wide application range. [0003] The current line focusing method still has the following shortcomings: [0004] 1) The construction cost of heat collectors is relatively high. For example, the cost of trough heat collectors is about 5.2 yuan / W, and the cost of linear Fresnel heat collectors is about 4.5 yuan / W. Compared with traditional and other energy sources, the advant...

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Problems solved by technology

[0004] 1) The construction cost of heat collectors is relatively high. For example, the cost of trough heat collectors is about 5.2 yuan / W, and the cost of linear Fresnel heat collectors is about 4.5 yuan / W. Compared with traditional and other energy sources, the advantages are not obvious; 2) The maintenance cost is high. First, the reflector is exposed to the air for a long time. Dust and fallen leaves will affect the reflective effect, and the reflector is more troublesome to clean. At the same time, the reflective rate of the reflector will decay quickly due to the influence of wind, rain and sand, and the life of the device is relatively short. ; Second, there are a large number of rotating parts, the structure is complex and the failure rate is high; 3) The utilization rate of solar energy per unit area of ​​the ground is low. The existence of solar collectors causes optical loss in the year-round operation of the collector and shading between reflectors, and the utilization rate of solar energy per unit area of ​​the trough collector and linear Fresnel collector is only about 55% and 65%. %

In addition, the trough collector also has the disadvantages of heavy installation, high wind resistance performance and tracking accuracy, and the linear Fresnel collector has the disadvantages of low concentration ratio.

The above problems limit the further popularization and application of solar line focusing devices and high temperature heat utilization in the sun

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