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U.S. Department of Energy
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Semi-concentrating solar energy collector

Patent ·
OSTI ID:5641411
A solar collector is described which consists of generally semicylindrical reflectors disposed in parallel relationship with the open sides of the reflectors disposed in a plane, a transparent hollow tube disposed within each reflector and adapted to carry a liquid from one end toward the other. The tubes have on the interior surface thereof an array of nested cube-corners, and absorber means disposed in the tube to absorb sun energy efficiently to heat the surface thereof. The transparent tube interior surface is defined by cube-corners having an index of refraction substantially different from that of air.
Assignee:
Minnesota Mining and Manufacturing Co., St. Paul, MN
Patent Number(s):
US 4586489
OSTI ID:
5641411
Country of Publication:
United States
Language:
English

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