Solar collector, and power-generating plant including such solar collectors

摘要

The invention relates to a solar collector (26), including: an outer tube (64) with a circular cross-section which is closed at one end thereof; a layer (52) for absorbing the solar radiation (R3) arranged inside the outer tube (64); and a heat pipe (56) comprising a hot portion (58) arranged inside the outer tube (64), a cold portion (60) arranged outside the outer tube (64), and a tank (62) containing a heat pipe fluid (63) and extending over the hot portion (58) and the cold portion (60). The outer tube (64) is sealed around the heat pipe (56) at the other end thereof, and a vacuum is formed inside said outer tube (64). Considering the hot portion (58) of the heat pipe (56), the tank (62) is at least locally applied against the absorption layer (52). The invention is characterised in that the hot portion (58) of the heat pipe (56) is semi-cylindrical.