Other potential improvements to the cycle including raising the
design temperature and pressure are possible. Currently, the installed
system is limited by the maximum design temperature
and pressure ratio of 538 C and 1.8, respectively. A Brayton cycle
designed to operate with a solar energy source can operate at temperatures
in excess of 600 C with pressure ratios on the order of
2.5. These changes greatly increase the thermal to electric conversion
efficiency, and will likely yield efficiencies in the vicinity of
50% as is commonly cited [46].