Reflection plate fixed condensation heat collection device adopting rotating rod type adjusting receiver

Abstract

The invention discloses a reflection plate fixed condensation heat collection device adopting a rotating rod type adjusting receiver. The reflection plate fixed condensation heat collection device comprises a main reflection plate, a rotating rod module and a receiver module, wherein the rotating rod module comprises a supporting rod, a rotating rod, a rotating shaft, a receiver fixing frame, a balancing weight and a power device, the rotating rod is connected with the upper end of the supporting rod through the rotating shaft, the rotating shaft is connected with a power device, and the power device drives the rotating shaft and the rotating rod to rotate; the two ends of the rotating rod are connected with the receiver fixing frame and the balancing weight correspondingly. and an adjustable base is arranged below the main reflection plate, and a greenhouse room is arranged outside the main reflection plate, the rotating rod module and the receiver module. The reflection plate fixed condensation heat collection device adopting the rotating rod type adjusting receiver has the advantages of few rotating parts, high solar energy utilization rate per unit occupied area, good wind resistance, high device stability, low construction and maintenance cost and light weight.

Description

technical field [0001] The invention relates to a solar heat collection device, in particular to a reflector-fixed light-collection heat-collection device adopting a rotating rod-type adjusting receiver, and 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 ...

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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. Because of the rotation of the reflectors, in order to avoid mutual shading, a certain distance should be left between the reflector arrays. Considering the existence of the distance, the optical loss and reflection of the heat collector during the year-round operation will be considered. The shading between the plates, the ground solar energy utilization rate per unit area of ​​the trough collector and the 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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