Importance

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Abstract

A solar collector assembly comprises a solar absorbing tube (1) having an evacuated radiation-transparent enclosure (8); a radiation absorber (10) within the tube (1), an elongate outer conduit (11) for a heat transfer medium extending through the tube (1), an inner conduit (12) extending through the outer conduit (11), and a manifold (2). The outer conduit (11) has an end region (5) extending into the manifold (2) so that passageway (13) defined between the outer conduit (11) and the inner conduit (12) is in fluid communication with the cold fluid passageway of the manifold (2). The inner conduit (12) extends beyond the end region (5) of the outer conduit (11) into the heated fluid passageway of the manifold (2). The solar collector also comprises a clip (20) for retaining the inner conduit (12) in spaced-apart relation to the end region (5) of the outer conduit (11). The clip (20) comprises a generally circular base (24) which engages with the inner surface of the end region (5) of the outer conduit (11). The base (24) has a plurality of inwardly extending teeth (23) which engage with the outer wall of the inner conduit (12). The teeth (23) are at least partially resilient and are spaced-apart to allow heat exchange fluid to pass between the teeth (23).

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First Claim