Embodiments disclosed herein include flexible joints configured to be positioned between the movable and stationary elements of a CSP heat transfer fluid circuit. Other embodiments include parabolic trough solar reflector modules, solar collectors or solar collector loops having joints between the movable and stationary elements of the heat transfer fluid circuit including at least one or more flexible pipes comprising a loop segment defining at least a partial loop around the axis of rotation.

A curved reflective mirror includes a flat glass structure, an intermediate adhesive layer, and a flat glass mirror. The intermediate adhesive layer is positioned between the flat glass structure and the flat glass mirror. The flat glass structure, the intermediate adhesive layer, and the flat glass mirror are curved and deformed in a mechanical manner with the support of a mold. The curved and deformed flat glass structure, intermediate adhesive layer, and flat glass mirror are solidified and bonded together in a heating and/or ultraviolet (UV) light radiation and/or room temperature solidification manner to form a composite curved structure. Also provided is a method for manufacturing a curved reflective mirror. The curved reflective mirror can be widely applied in the fields of solar thermal collection and concentration and solar thermal power generation.