SOLAR COLLECTOR

摘要

A solar collector comprising a hemisphere (111) having a reflective internal surface; a caustical conical concentrator (116) located at the focus of the hemisphere (111) and having a concentrated second focus for radiation reflected onto its surface from said hemisphere (111), a heat exchanger (120) located at the second focus, said caustical conical concentrator (116) being mounted to rotate about a substantially North-South axis passing through said second focus and being driven by a drive such that with movement of the sun, incident solar radiation is constantly directed at said second focus.