Supercritical CO2 and other advanced power cycles for concentrating solar thermal (CST) systems
Abstract
Subcritical steam Rankine cycles are currently used in all operating solar thermal power plants. However, thermal efficiencies of these power cycles are limited to about 42%. New types of power cycles are required to generate power at higher efficiencies in order to drive down the cost of solar thermal electricity. This chapter reviews the potential power cycles that can be employed for solar thermal power plants in the near future. Supercritical steam Rankine cycles, air and helium Brayton cycles, and supercritical carbon dioxide power cycles are described ...
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