Vacuum tube collector module for solar heating has members of U-tube asymmetrically connected to head section in positive locking manner and fixed by retaining clips and spring clip

摘要

The vacuum tube collector module comprises a supply line (7) and a return line (7') for a heat transfer medium connected to a U-tube inside a casing tube (3) which on the inner side has a reflective layer (10). The members of the U-tube are asymmetrically connected to the head section in a positive locking manner and are fixed by at least two retaining clips (8) and a spring clip (9). Two plug-in supports (11,11'), which are connected in each case to the supply and return lines, fit in a feed line (5) and a drain line (5') by means of flexible seals (12).