Holder for securing a fluid tube, a solar collector, and method of arranging a fluid tube

A method of arranging a fluid tube in a trough-formed solar collector, comprising:

• arranging a holder for the fluid tube in the solar collector, the holder comprising a base member and an immobilizing member connected to each other, and
• arranging the fluid tube in the holder such that the fluid tube abuts the holder, and, when the solar collector is in an operation mode, the holder partly encircles a circumference of a cross-section of the fluid tube and leaves a portion of the circumference un-encircled by the holder, wherein arranging the fluid tube comprises directing the un-encircled portion to face a reflective surface of the solar collector, such that the un-encircled portion is accessible for concentrated solar radiation reflected by the reflective surface, by:
• arranging the fluid tube at the base part, and
• adjusting the position of the immobilizing means to immobilize a centre-line of the fluid tube in the solar collector, such that the base member together with the immobilizing member partly encircles the circumference of the cross-section of the fluid tube, and forms an opening smaller than a diameter of the cross-section of the fluid tube, wherein the opening is located asymmetrically in relation to the solar collector's optical plane of symmetry.

A holder for securing a fluid tube to a trough-formed solar collector, wherein the holder is configured to, in an operation mode of the solar collector, partly encircle a circumference of a cross-section of the fluid tube and leave a portion of the circumference un-encircled by the holder, and direct the un-encircled portion to face a reflective surface of the solar collector, such that the un-encircled portion is accessible for concentrated solar radiation reflected by the reflective surface, the holder comprising:

• a base member adapted to abut the fluid tube, the base member comprising at least one securing means adapted to secure the base member to the solar collector, and
• an immobilizing member adapted to together with the base member immobilize a centre-line of the fluid tube in the solar collector when the fluid tube abuts the holder, the base member being connected with the immobilizing member, such that the base member together with the immobilizing member can partly encircle the circumference of the cross-section of the fluid tube and, in the operation mode of the solar collector, form an opening smaller than a diameter of the cross-section of the fluid tube, wherein the opening is located asymmetrically in relation to the solar collector's optical plane of symmetry;
• and
• a locking arrangement adapted to lock the immobilizing member in relation to the base member, the locking arrangement being arranged at any of the base member and the immobilizing member, or on both of the base member and the immobilizing member.