In the solar collector, the sun's energy is absorbed and transformed to heat by a liquid (usually water) in the solar collector's channels.
(the sun's energy; is absorbed; L:In the solar collector) (the sun's energy; transformed; to heat; by a liquid (usually water) in the solar collector's channels; T:In the solar collector)
the sun's energy the sun's energy
is absorbed transformed
L:In the solar collector
to heat by a liquid (usually water) in the solar collector's channels T:In the solar collector