Q111: A Scheffler’ Solar concentrator has - Solar Energy Engineering - Renewable Energy Engineering- ICAR JRF/SRF 2024 | Agrigyan

• Tracking Mechanism of Scheffler Solar Concentrators:
• Design Concept: Invented by Wolfgang Scheffler, this system utilizes a flexible elliptical section of a paraboloid that concentrates direct sunlight onto a stationary focal receiver located inside an enclosed kitchen or workshop.
• Tracking System: Employs two-axis tracking:
• Daily polar tracking: Automatic clockwork or motorized rotation about an axis parallel to Earth's polar axis ($15^\circ/\text{h}$) to follow the sun from east to west.
• Seasonal tracking/deformation: Adjusts the tilt angle and physically flexes the crossbars of the reflector surface to match solar declination changes throughout the seasons.
• Conclusion: 2-axis tracking (Option 3).

Correct option: (3) 2-axis tracking