Strategies to reduce optical losses
Optical losses reduce the usable solar power delivered to the receiver. Minimizing these losses improves plant output and economics. Approaches combine design choices, materials, and operational practices.
Common strategies:
- High-reflectance mirrors: use coated glass or durable metallic coatings with high broadband reflectance.
- Accurate tracking: precise motor drives and control algorithms reduce mispointing losses.
- Field layout optimization: spacing and aiming strategies minimize shading and blocking between collectors.
- Regular cleaning: schedule washes and use soiling-resistant coatings to maintain reflectivity.
Additional measures:
- Use of flux cameras and sensors to detect degraded mirrors and correct alignment.
- Protective coatings to reduce corrosion and dust adhesion in harsh environments.
- Robust mechanical design to limit wind-induced misalignment and structural deformation.
A combination of good design, quality components, and disciplined operations keeps optical losses low and maintains steady energy output over the plant lifetime.