Quick Answer
Top mistakes to avoid when installing bifacial panels are misaligning the panel's backside to the ground, neglecting the optimal distance to the ground for maximum energy gain, and failing to ensure a clean and opaque surface beneath the panel to prevent energy loss.
Misalignment and Distance Issues
When installing bifacial panels, it’s crucial to ensure that the panel’s backside is properly aligned with the ground. A misalignment of just 1-2 degrees can result in a 10-20% loss in energy gain. Aim for an optimal distance of 10-20 cm (4-8 inches) between the panel’s backside and the ground for maximum energy gain.
Cleaning and Surface Requirements
A clean and opaque surface beneath the panel is essential for optimal energy gain. Any dirt, dust, or debris on the surface can reflect energy away from the panel, reducing its efficiency. Use a clean, opaque reflective surface such as a sheet of aluminum or a specialized bifacial panel ground plane to maximize energy gain. A common technique is to use a small amount of water to clean the surface before installing the panel.
Frame and Mounting Design
Proper frame and mounting design is also critical to ensure optimal energy gain from bifacial panels. Avoid using frames with sharp edges or corners that can create shadows on the panel’s backside. Instead, opt for frames with smooth, curved surfaces that minimize energy loss. Use adjustable mounting systems to ensure the panel is securely fastened to the frame and is level with the ground. A common technique is to use a 3-point mounting system to prevent the panel from tilting or shifting over time.
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