US 11,692,740 B2
Double point-focusing solar energy collection apparatus
Cheng Wang, Changzhou (CN); and Ye Zhu, Changzhou (CN)
Assigned to Changzhou University, Changzhou (CN)
Appl. No. 16/614,375
Filed by Changzhou University, Changzhou (CN)
PCT Filed May 18, 2018, PCT No. PCT/CN2018/087466
§ 371(c)(1), (2) Date Feb. 3, 2020,
PCT Pub. No. WO2018/210331, PCT Pub. Date Nov. 22, 2018.
Claims priority of application No. 201710351785.0 (CN), filed on May 18, 2017; and application No. 201710363000.1 (CN), filed on May 18, 2017.
Prior Publication US 2020/0158378 A1, May 21, 2020
Int. Cl. F24S 23/71 (2018.01); F24S 10/70 (2018.01); F24S 50/20 (2018.01); F24S 10/40 (2018.01); F24S 20/20 (2018.01); F24S 23/79 (2018.01)
CPC F24S 23/71 (2018.05) [F24S 10/40 (2018.05); F24S 10/70 (2018.05); F24S 20/20 (2018.05); F24S 23/79 (2018.05); F24S 50/20 (2018.05)] 12 Claims
OG exemplary drawing
 
1. A double point focusing solar energy collection apparatus, comprising:
a heat collector comprising a primary concentrator and a heat collection tube, wherein the primary concentrator has a focus point;
a secondary concentrator having a focus point;
wherein a first opening of the primary concentrator is larger than a second opening of the secondary concentrator, and a first focal length of the primary concentrator is larger than a second focal length of the secondary concentrator, wherein a first ratio of the first opening to the first focal length is equal to a second ratio of the second opening to the second focal length; and
a bracket supporting the primary concentrator, the heat collection tube, and the secondary concentrator, wherein the heat collection tube is located between the primary concentrator and the secondary concentrator and is located on focus points of the secondary concentrator and the primary concentrator, wherein the primary concentrator is a circular Fresnel reflector, and the secondary concentrator is a circular Fresnel reflector.