Parabolic trough
OverviewEfficiencyDesignEnclosed troughEarly commercial adoptionCommercial plantsSee alsoBibliography
A parabolic trough collector (PTC) is a type of solar thermal collector that is straight in one dimension and curved as a parabola in the other two, lined with a polished metal mirror. The sunlight which enters the mirror parallel to its plane of symmetry is focused along the focal line, where objects are positioned that are intended to be heated. In a solar cooker, for example, food is placed at the foc…