a solar heat collector has a plurality of collector elements mounted in a fixed plane , parallel and adjacent to each other . each of the collector elements has an outer casing of transparent material with one side facing the source of solar energy , and an other side coated with a reflective material . an inner tubular section of darkened material is positioned between the axis of the outer tubular casing and the reflective material of the other side of the outer tubular casing , whereat substantially all of the solar energy is refracted or reflected by the outer casing or the reflective material . the inner tubular section is designed to accommodate and heat a gaseous medium . the upper and lower ends of the inner tubes are connected to a system for storing or using the heated gasses after they are warmed by the solar energy .