Horizontal axis type asymmetric single-parabola composite track-free solar concentrator

Abstract

The invention relates to a horizontal axis type asymmetric single-parabola composite track-free solar concentrator, which comprises involute light gathering plates with unequal spread angles, a single-side parabola light gathering plate, a cylindrical vacuum tube, a reflecting layer, a bracket, a coaxial hollow seat and a dust washing hole, wherein the reflecting layer is rigidly connected with the light gathering plate; the light gathering plate is rigidly connected with the bracket; the coaxial hollow seat is rigidly connected with the bracket; the cylindrical vacuum tube is fixed in the inner hole of the coaxial hollow seat; and the dust washing hole is arranged on the bottom of the light gathering plate. According to the horizontal axis type asymmetric single-parabola composite track-free solar concentrator, the reflecting area is reduced, and the north-south lighting angle is increased, the sunlight in the elevation angle range of 90 degrees can be collected all day without light tracking; the lighting efficiency of unit area is greatly increased, the production cost is reduced, the failure rate is reduced, and the convenience in installation and maintenance is achieved. The horizontal axis type asymmetric single-parabola composite track-free solar concentrator is suitable for solar medium-low temperature heat collection of the vacuum tube with a cylindrical heat absorbing body, and can form a large-scale solar medium-low temperature heat collecting array.

Description

technical field [0001] The invention relates to a solar concentrator, in particular to a horizontal axis type asymmetrical single parabola compound tracking-free solar concentrator. Background technique [0002] As we all know, the compound parabolic concentrator used in the solar thermal field is a unit component that uses involutes, parabolas, straight lines, etc. to increase the area of ​​​​collecting sunlight and increase the conversion temperature. The concentrators can be used alone, or they can be combined into a large concentrating array to form a concentrating system. figure 1 It is the cross-sectional shape of this concentrator, which is composed of a group of symmetrical involutes and a group of symmetrical parabolas with the vacuum tube heat-absorbing circle as the base circle. The axis of symmetry is Yo, and F1 and F2 are the involutes and The joint point of the parabola is also the focus of the parabola; the distance between F1 and F2 is d1, d1 is the width of...

AI Technical Summary

Problems solved by technology

In addition, even within the range of lighting angle, the equivalent opening width d' is smaller than d2, which only collects a part of the installation width L, and the lighting efficiency per unit area is low

Images