Performance improvement of dry cooled advanced concentrating solar power plants using daytime radiative cooling

It is shown that for the simple supercritical carbon dioxide cycle operating at hot source temperature equal 550 °C by employing 14.02 m2/kWe radiative cooler, it is possible to overcome the efficiency losses due to air cooling and the net output of the cycle improves by 5.0%. At hot source temperature equal 800 °C, the required radiative cooler area is 4.38 m2/kWe and respective performance improvement is equal 3.1%. For the recompression supercritical carbon dioxide cycle operating at hot source temperature equal 550 °C by employing 18.26 m2/kWe radiative cooler, it is possible to overcome the efficiency losses due to air cooling and the net output of the cycle improves by 7.5%. At hot source temperature equal 800 °C, the required radiative cooler area is 10.46 m2/kWe and respective performance improvement is equal 4.9%.