Electrical generation system powered by low pressure air flow heated directly or indirectly by the sun

摘要

The system passes air through solar panels (3, 5, 7, 9) where the air is heated by direct or reflected sunlight. The air is fed to a low pressure, low temperature turbine (11) where the potential energy of the air is used to rotate the turbine shaft which is coupled via a gearbox (12) to an electricity generator (13). The system can produce useful output when the temperature difference between the heated air and the ambient air is a little as 2 degrees C.