| 摘要 |
A receiver tube (1) for a solar trough collector which focuses the solar radiation incident thereon towards a focal line includes an absorber tube (2) which in the mounted condition of the receiver tube (1) extends on the focal line of the trough collector and which is in the form of part of a flow path for a heat carrier medium, and a gas-tightly closed casing tube, in the internal space (8) of which the absorber tube extends, wherein the flow path for the heat carrier medium is passed outwardly through the wall of the casing tube in the end regions thereof. It is provided that the casing tube includes at least two case portions (4, 5) which in the mounted condition extend in the direction of the focal line and are gas-tightly connected together along generatrices, the first case portion (4) comprises a material which is transmissive for the solar radiation, the second case portion (5) comprises a fracture-resistant material, and the flow path for the heat carrier medium is passed outwardly through a part of the wall of the casing tube, that is not formed by the first case portion.
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