PURPOSE: To obtain a heat absorber structure, which has a few solar incident angle dependent characteristic, and at the same time contrive to improve the heat collection efficiency by a structure wherein at least two absorber pipes are disposed in an array above the curve butting part of reflectors and covered by an absorber, the sectional shape of which is an inversed triangle, with a planar part on its top surface and slant parts on both the side surfaces.
CONSTITUTION: Two absorber pipes 5 and 5 are arranged bilaterally symmetrically with respect to the butting center line at the upper central position of the butting position of right and left involute curves of reflectors 3, which are arranged in the interior of a vacuumized glass tube 4 at a vacuum tube unit 2. After that, an absorber plate 7 is provided so as to cover the space between the absorber pipes 2 and run slantly on both sides from the outer peripheries of the respective absorber pipes towards a point above the vicinity of the butting position of the right and left involute curves. Finally both the tips of the absorber plate is bonded so as to form a closed loop in order to form an absorber 6, the sectional shape of which is an inversed triangle.
SENDA TAKAYUKI
TSUBOI HIDEFUMI
KATAGAI NOBUYOSHI
ITABASHI MASAHIKO
