A COMPOSITE INSULATING PANEL

摘要

A composite insulating panel (17) comprises a profiled external sheet (2) having a plurality of raised crowns (3) of generally trapezoidal form, an i nner liner sheet (4) and a body of insulating foam (5) between the sheets (2 , 4). The panel (1) has an integral heat collecting means for transfer of he at from one source to another. In one case there are inner conduit (21) thro ugh which a heat transfer medium is circulated to extract heat from inside a building and outer conduits (8) for collection of solar heat (9). The panel (17) may be used as part of a heating/cooling/ventilation system.