Pipe collector e.g. for absorbing light energy, has transparent pipe with internal with both ends being rigid end and connected gas-tight with one another and internal pipe serves for light absorption

摘要

The collector has a transparent pipe (9) and a pipe (2) provided inside the pipe. The pipes have rigid ends and connected in a gas-tight formation with one another. The internal pipe serves for the light absorption. The absorber pipe has a device serving for the compensation of different linear extension of the absorber pipe in relation to the pipe. The compensation of different linear extension takes place by a deformation of the absorber pipe. The diameter of the absorber pipe (23a) and or the pipe varies.