This invention relates to a method and apparatus for a solar collector
having intergral control of the the maximum temperature that it can
reach, thereby avoiding excessive stagnation temperatures in the
collector. In one embodiment, a solar collector comprises a top portion
comprising glazing, a bottom portion; an absorber disposed between said
top portion and said bottom portion for absorbing solar energy received
through said glazing, said absorber in a spaced relationship above said
bottom portion such that a channel is defined between a lower surface of
said absorber and an upper surface of said bottom portion; an inlet and
an outlet associated with and at substantially opposite ends of said
channel between said absorber and said bottom portion, for ventilating
said channel; and a damper for opening said outlet at a temperature equal
to or above a first selected temperature and for closing said outlet at a
temperature equal to or below a second selected temperature; wherein said
first and second selected temperatures are below a stagnation temperature
of the solar collector.