Systems and methods capable of producing electrical power from solar energy
through the use of air cycles without fossil fuel combustion. The system includes
a solar receiver, a generator, a compressor, and an expander. The expander is coupled
to the generator to drive the generator and coupled to the compressor to drive
the compressor. The system uses solar generated heat from the solar receiver to
heat compressed air from the compressor. The solar generated heat can be directly
transferred from the solar receiver to the compressed air as the compressed air
flows through receiver tubes of the solar receiver, or the solar receiver can transfer
the solar generated heat to a liquid metal, with the liquid metal transferring
thermal energy to the compressed air. The expander receives and expands the heated
compressed air to drive the generator to produce electricity, and to drive the
compressor to compress air.