| 摘要 |
<p>A solar concentrating and collecting line-focus Fresnel lens. Distribution of microprism elements (2) in each microprism cluster of the lens follows the following principle: middle parts of the microprism elements have equal widths, and outer parts of the microprism elements have equal heights; in addition, the middle parts are relatively wide (the widths range from 3 to 5 mm), and the outer parts are relatively narrow (the widths range from 1 to 3 mm), so that the thickness of a substrate is more uniform, structural stability is significantly improved, and the total number of the microprism elements (2) and the total number of vertical shearing points are greatly reduced, thereby lowering the processing difficulty and improving convergence efficiency. The lens can concentrate sunlight into a focal line more efficiently, and can be used as a condenser of a high-temperature solar collector, so as to provide a green high-temperature heat source for domestic and industrial fields such as heating, air conditioning, textile, printing and dyeing, papermaking, rubber, sea water desalination, and sewage purification.</p> |
