In this article. the performance of an inclined north-south axis (INSA) multiple positions sun-tracked V-trough with restricted reflections for photovoltaic applications (MP-VPVs) is investigated theoretically based on the imaging principle of mirrors. solar geometry. vector algebra and three-dimensional radiation transfer. https://www.poolsproductscanadas.shop/product-category/raypak-els-3-series-heater-parts/